This is Apollo Control at 65 hours. The crew now about 2½ hours into their rest period. About 5 hours remaining before they're scheduled to awaken. And we have an update on the S-IVB impact. The Saturn third stage is scheduled to hit the Moon now at 79 hours, 24 minutes, 42 seconds Ground Elapsed Time. The coordinates have changed slightly. We're now showing the impact point at .997 degrees south, that would be 0.997 degrees south, and 11.872 degrees west. Apollo 15 at this time is 31,470 nautical miles [58,282 km] from the Moon and traveling at a speed, with respect to the Moon of 3,653 feet per second [1,113 m/s].
This is Apollo Control at 66 hours, 1 minute. Apollo 15, at the present time, continuing in its Passive Thermal Control mode and the crew [are] about 4 hours away from the scheduled time of awakening. In the Passive Thermal Control mode, the spacecraft is rotating about its longitudinal axis at the rate of about 3 revolutions per hour to maintain uniform exposure to the Sun and the proper thermal control of the spacecraft. This slow roll is set up by the crew prior to beginning their sleep period and on this mission we've had very good luck with the - that attitude holding and very small deviations. On occasion - previous missions we have noted that occasional[ly], when the Passive Thermal Control mode is set up, that it will begin to diverge after several hours if it's not put into a very stable position and it has, on occasion, been necessary to awaken the crew and get them to reestablish the Passive Thermal Control. However, as I mentioned, we're - we're holding very stable and would see no - no reason for having to reestablish the Passive Thermal Control mode. Apollo 15, at the present time, is 29,258 nautical miles [54,186 km] from the Moon and the spacecraft velocity is 3,669 feet per second [1,118 m/s]. The cabin temperature has been holding steady at around 65 to 70 degrees [Fahrenheit, 18 to 21° Celsius] and the pressure; about 5.2 pounds per square inch [35.9 kPa]. And all spacecraft systems appear to be functioning about as expected at the present time. In Mission Control, we've been using this quiet period to do such things as recalibrate recorders and review activities that'll be coming up tomorrow. Also, Flight Director Glynn Lunney has been going over, with some of the flight controllers, the techniques that will used for the landing on the Moon, which this shift will handle [tomorrow]. And we now show 3 hours, 56 minutes until scheduled crew awakening time. This is Apollo Control; standing by at 66 hours, 3 minutes.
This is Apollo Control. We've been monitoring all the systems on the spacecraft since putting the crew to bed. And everything continues to be normal. Flight Director Glynn Lunney, at the moment, is going around the room double-checking the status with each of his flight controllers. And there appears to be no change in status. Apollo 15, at the moment, is 27,152 nautical miles [50,285 km] from the Moon, and the spacecraft's velocity is 3,686 feet per second [1,123 m/s]. At 67 hours; this is Apollo Control.
This is Apollo Control at 68 hours. We're continuing to get a good solid tracking data from the Manned Space Flight Network stations at Honeysuckle Creek and Parkes, Australia and all systems functioning normally on the spacecraft. We have about 2 hours remaining in the crew's rest period. And on awakening, activities will begin to pick up for the crew as we near Lunar Orbit Insertion [LOI]. During the day's activities, they'll have a midcourse correction. That will be a small burn of about 73 hundredths of a second with the Service Propulsion System engine, which will occur at about 73 hours, 30 minutes, 59 seconds, and Lunar Orbit Insertion is scheduled for 78 hours, 31 minutes, 34 seconds. The Saturn third stage, the S-IVB, is scheduled to impact the Moon at 79 hours, 24 minutes, 42 seconds. And also, prior to Lunar Orbit Insertion, the crew will be jettisoning the door on the Scientific Instrument Module [SIM] of the Service Module, exposing the cameras and other sensors to the lunar environment. At the present time, we show Apollo 15 [to be] 24,930 nautical miles [46,170 km] from the Moon and the spacecraft velocity, up now to 3,707 feet per second [1,130 m/s].
This is Apollo Control at 69 hours. We're just about 1 hour now from awakening the crew. On getting up this morning, the crew's first activity, following breakfast, will be to prepare cameras for photographing the jettisoning of the Scientific Instrument Module door. About three and a half hours after awakening, they're scheduled to perform the final mid-course correction en route to the Moon. That maneuver scheduled to occur at 73 hours, 30 minutes, 59 seconds. We do anticipate having a change of shift press briefing. That will occur at about about 7:15 Houston time in the News Center briefing room. Apollo 15 is now 22,758 nautical miles [42,148 km] from the Moon. The spacecraft velocity is 3,733 feet per second [1,138 m/s].
This is Apollo Control at 70 hours. We're standing by to put in a call to the crew if we don't see some signs of activity in the spacecraft first, indicating that they are up and about. The 8-hour rest period is scheduled to be over at this time and the crew does have a rather busy day of activities ahead of them, so we do plan to get them going pretty much on schedule. Apollo 15, at the present time, is 20,582 nautical miles [38,118 km] from the Moon and travelling at a speed of 3,764 feet per second [1,147 m/s]. Here, in Mission Control, we'll be handing over the shift shortly. Flight Director Gerry Griffin will be coming on to replace Flight Director Glynn Lunney. And - We've just had a call to the crew. We'll stand by, and pick up the response here.
070:00:31 Parker: Apollo 15, Houston. Over. [Long pause.]
070:00:59 Scott: Hello, Houston; Apollo 15.
070:01:01 Parker: Roger. Good morning, Dave. It's time to rise and shine.
070:01:06 Scott: Okay, Bob. Good morning. [Pause.]
070:01:10 Parker: And we've got the usual quota of checklist changes, Flight Plan updates, et cetera. When you guys are ready, give me a call. Looks like you guys had a good night's sleep last night, for you anyway, Dave.
070:01:27 Scott: Okay. Felt pretty good. We'll get organized and give you a call here in a few minutes.
Our spacecraft communicator at the moment is astronaut Bob Parker and he'll be replaced shortly by the oncoming CapCom, astronaut Joe Allen. There will be a change of shift press briefing. We expect that it will begin at about 7:15 or shortly thereafter in the News Center briefing room.
070:26:17 Scott: Good morning. I have a consumables report for you, and sleep report.
070:26:22 Parker: Okay. We're ready to copy. [Pause.]
070:26:29 Scott: Okay. On the Commander: PRD - 7½ hours sleep; CMP: 25012, same sleep; LMP: 08013, same amount of sleep. On the consumables: At 70:15 [GET]: RCS; [quad A to D] 90 [per cent remaining], 87, 84, and 88. On the H2 [tanks 1 to 3]; 90 [per cent remaining], 89, and 60. O2 [tanks 1 to 3]; 88 [per cent remaining], 89, and 65. Over.
070:27:24 Parker: Roger. And, before I read that back, we did not catch the Commander's PRD reading. [Pause.]
070:27:37 Scott: That was 23046.
070:27:42 Parker: Roger. Copy. Understand we have Commander's PRD 23046, 7½ hours sleep for all three crewmen; 25012 for the CMP; and 08013 for the LMP. And we have consumables update, based on our figures from the ground. For 70:00, we have [RCS] 84 per cent total, and we have [quad A to D] 85, 84, 84 and 85. And for H2 [tank 1 to 3] we have 91, 90 and 60. For O2 [tank 1 to 3] we have 89, 90 and 73. Over. [Pause.]
070:28:39 Irwin: Roger. I - I'm ready for any Flight Plan updates you might have.
070:28:44 Parker: Okay. First we have Flight Plan update for the day. We'll start out at - Stand by.
070:31:21 Parker: 15, Houston. You back with us again? [Pause.]
070:31:31 Irwin: Roger. We've been here all along, Bob.
070:31:33 Parker: Rog. We had the usual signal break when we went around in PTC there. Let me ask you one question. The EECOMs are interested in getting a verification on the O2 tank 3 read-out, since there's a difference of 8 percent there. And, then after we get that, we'll proceed with this update. It's a fairly long one, so I guess you may as well...
070:31:53 Irwin: Okay. Stand by.
070:31:54 Parker: ...drag out your Flight Plan. [Long pause.]
070:32:15 Parker: Roger. Understand 74. Okay, Jim. And we'll start this Flight Plan update at 71 hours, so you can tell me when you get there. [Pause.]
070:32:29 Irwin: Okay. I'm there.
070:32:30 Parker: All right. At 71 hours, you want to add the following information. "High Gain Antenna [HGA] on MSFN cue," and note that we won't stop PTC. We'll have to give you the numbers [for the HGA angles], depending on where you are - in PTC, as we come around at this point. Second line is "S-band Aux TV, to Science, Pan Camera Mode, to Standby." That's a "Verify." "Pan Camera, Power, On. Pan Camera Self Test, to Heaters. Mapping Camera, On, to Standby. Then after five minutes, Pan Camera Power, Off, and S-band Aux, TV, Off." Copy? [Long pause.]
070:34:05 Irwin: Okay. Here's the readback, Bob. At 71 hours, "High Gain Antenna on MSFN cue, S-band Aux TV, to Science, Pan Camera Mode, to Standby." That's a "Verify." "Pan Camera Power, On; Pan Camera Self Test, to Heaters; Mapping Camera, On, to Standby; after five minutes, Pan Camera, Off, and S-band Aux, TV, Off."
070:34:31 Parker: Roger. That's good. Okay. Next item at 71:15. This will be a line added in after the "CM/LM Pressure Equalization Decal." And the line says, "Press Equal valve, Close." Over. [Pause.]
070:35:02 Irwin: Roger. At 71:15, "Pressure Equalization valve, Close."
070:35:06 Parker: Roger. And next one's on 73 hours and 15 minutes. [Pause.]
070:35:20 Irwin: Okay. Go.
070:35:21 Parker: Okay. And at 73:15, we will delete the line referring to waste water dump. "Waste Water Dump" will be deleted. [Pause.]
070:35:34 Irwin: Okay. I copy. Delete the "Waste Water Dump."
070:35:37 Parker: Okay. Next one will be at 81:42. 8 1 4 2. [Long pause.]
070:36:04 Irwin: Go.
070:36:06 Parker: Okay. And, in the configuration for the camera there, we're changing that from "CM4" to "CM3" on the second line. [Pause.]
070:36:21 Irwin: Okay. "CM3" is [garble] to "CM4."
070:36:24 Parker: Roger. Next one's on 84:24, 8 4 2 4. [Long pause.]
070:36:41 Irwin: Okay; go.
070:36:42 Parker: Roger. [This] also [concerns the] configuration of the camera, and we'll change that one also to "CM3" instead of "CM4." [Pause.]
070:36:55 Irwin: I copy.
070:36:56 Parker: Roger. And then over on the other side of the page at 84:40, again terminator photos. The first one, the first line there 84:40 will now read "EL, On" and the time will be "T start minus 1:40," one, four, zero. [Pause.]
070:37:22 Irwin: Okay. I copy.
070:37:25 Parker: And then at 84:42, "EL, Off" will now be at "EL, Off, parenthesis, T-start." [Pause.]
070:37:41 Irwin: I copy.
070:37:42 Parker: Okay. And we have two general notes. One refers to SIM [bay] door Jett[ison], and it's a reminder that we verify that the Lexan shield is mounted in - window 5, with the cardboard shade off, for a photograph of SIM door Jett. At - this is about 74 hours. [Pause.]
070:38:10 Irwin: Okay. Understand.
070:38:11 Parker: Okay, and second one is with respect to the Optics Cal[ibration]. And I guess that we should explain here that - people are wringing their hands down here about the fact the we looked at a little bit of a bias drift when you guys zeroed the optics the first day, and we sent up some procedures yesterday saying to be careful when you are doing it for P23. And then everybody else got - decided that we ought to be careful when we did it for other things besides P23. And so, we have the following procedures, which are, basically, to avoid high trunnion rates for all optics zeroing, so that we don't get any - possible shift of the mirror calibration. And the procedures are twofold. First - I guess you might write them down some place - if the Optics power is Off, place Zero switch, Off, before turning the Optics power on. And then, after the power is On, drive the Optics manually to a Trunnion of less than 10 degrees before placing the Zero switch, On. Over. [Long pause.]
070:39:28 Irwin: Okay, Bob. If Optics power Off, then Optics Zero switch, Zero? [Pause.]
070:39:39 Parker: Roger. It really is, "if Optics power Off, place the Zero switch to Off before turning the Optics power On."
070:42:49 Irwin: Bob, would you read that procedure again? Make sure I have it correct. I have Optics power, Off, then Optics Zero switch, Zero.
070:43:04 Parker: Okay, Jim. The thing is, if your Optics power is Off, we - as it will be like this morning, and the Zero switch is already on, as it probably is this morning, we want you to place the Zero switch to Off before you turn the Optics power on, because, otherwise, it will then automatically zero without you having any control over it. Do you understand? [Pause.]
070:43:28 Irwin: Okay. We understand.
070:43:30 Parker: Okay. And - the corollary...
070:43:33 Irwin: Read the - read the rest of it after the Op...
070:43:37 Parker: Okay. And then after, - Okay; I'll - I'll read it through from the beginning again. "If Optics power off, place Zero switch, Off, before turning Optics power On. Then, drive Optics manually to Trunnion less than 10 degrees before placing Zero switch, On." Over. [Long pause.]
070:44:14 Irwin: Okay. That was after the Optics power on. Drive optics until Trunnion is less than 10 degrees before Zero switch, On.
070:44:24 Parker: Roger. And the corollary to that is if the Optics power is already on, then we drive the Optics power manually to a Trunnion of less than 10 degrees before placing the Zero switch, On. That's the second part.
070:44:42 Irwin: Okay. We copy.
070:44:44 Parker: Okay. And then I have an update to your Contingency Checklist, page 4-3 which pertains to LOI burn rules if you can get that out.
070:46:59 Irwin: Okay, Bob. I have the Contingency Checklist.
070:47:01 Parker: Okay, I got 4 - page 4-3.
070:47:09 Irwin: Stand by. [Long pause.]
070:47:20 Irwin: Okay; I have 4-3.
070:47:22 Parker: Okay. And these changes are basically in the table there. - We'll start out under the heading of "Burn time." And that first one will be change from "00 to 1:36," now, instead of "1:35." So, it'll be 1:36 in the first burn time. The second line will be "1:36 to 1:57." And the third line will be "1:57 to 2:13." And the fourth line will be "2:13 to 3:11." Over. [Pause.]
070:48:15 Irwin: Copy.
070:48:17 Parker: Okay, the next one in the second column, "Delta-VM," the lines will be 0 to, or "0-640, 640-784, 784-900, 900-1313." Over. [Pause.]
070:48:55 Irwin: I copy.
070:48:57 Parker: Okay, and, in the second block, the lower block, under the updates for the times and angles, we have the following readings under the "Update" column. The GET [Ground Elapsed Time] of LOI ignition is "78:31:34.2," the second time is "79:01:34.2," and the angles are "144, 358, and 68." Over. [Pause.]
070:49:49 Irwin: Okay, copied on the update time, "78:31:34.2, 79:01:34.2; 144, 358, and 68."
070:50:03 Parker: Roger. And, be advised, this also changes your little graph over on the side there. Primarily what it does, is to enlarge the mode 130 region by about 10 feet per second on either side and it changes the "LOI plus 30 abort Delta-V" line by essentially extending it and raising the left-hand corner just a wee bit. We could read up the lines too, if you want, but I'm not sure you really need those. Over. [Pause.]
070:50:38 Irwin: Okay; understand.
070:50:43 Parker: We're coming up on another Omni switch, and we'll be back with you in a minute, Jim.
070:50:52 Irwin: Roger.
And this is Apollo Control; as we come up through a rotation of Passive Thermal Control and lose lock with one of the Omni[-directional] antennas. We'll take the circuit down in the next few moments to prepare for change of shift press conference in the Newsroom briefing room, Building 1. The distance from the Moon now 18,674 feet per sec [correcting himself] - nautical miles [34,584 km]; approaching the Moon at 3,797 feet per second [1,157 m/s]. Any air-to-ground conversation between Mission Control and the crew of Apollo 15 taking place during the change of shift press conference with Black team Flight Director Glynn Lunney will be recorded, played back on a delayed basis and we'll rejoin air to ground communications live at that time. At 70 hours, 52 minutes Ground Elapsed Time; this is Apollo Control.
070:53:17 Parker: Okay, 15; we're back with you. [Long pause.]
070:53:33 Parker: 15, Houston; we're back up. [Pause.]
070:53:40 Irwin: Okay. We read you.
070:53:41 Parker: Okay. Understand you really - didn't feel you needed the complete update to that graph, Jim. [Long pause.]
070:54:56 Parker: Jim, this is Houston. Is that a verify on the fact that you don't want the update on the graph? Over.
070:55:06 Irwin: I think we can do it ourselves, Bob.
070:55:08 Parker: Oh, Rog. Okay, and that's all the update we have for you at the moment. You might be interested in knowing that that water dump you guys scheduled last night before you went to bed, was at a very opportune time. Your PTC shifted plus or minus 2½ degrees all night.
070:55:26 Scott: Well, very good.
070:55:32 Parker: We'll be up with the news in a while.
This is Apollo Control again. Hopefully the line is up properly. Every 2 hours the spacecraft analysis room [SPAN room] in the back of the Mission Control Center here prepares a report on the status of spacecraft systems. The report issued at 70 hours Ground Elapsed Time, a little over an hour ago, is very short; about three quarters of a page; the entries under thermal, displays and controls, instrumentation, power distribution and sequencing, communication, crew systems, guidance and control, propulsion and power; all have entries such as: 'No change in status,' 'Our systems performance has been normal.' Under fuel cells and cryogenics, the statement reads: 'The fuel cells are normal, delivering approximately 75 amperes to the spacecraft systems. The cryogenic system is normal with approximately 817 pounds [371 kg] of oxygen remaining and approximately 67.8 pounds [30.8 kg] of hydrogen remaining. The Command Module batteries; battery A has 39 amp-hours remaining; battery B, 39; battery C, 37.8. No change in the LM batteries.' And that is the extent of the report from the spacecraft analysis room issued at 70 hours Ground Elapsed Time. During the time the press conference - change of shift press conference was underway, some two-minutes-plus air to ground have been recorded. We'll play those back at this time and resume live communications with the crew of Apollo 15.
071:11:40 Irwin: Roger. We just want to confirm the position of the switches on the Mapping Camera and Pan Camera. We have the "Mapping Camera On" is Standby, and the "Pan Camera, Power," Off. Is that correct?
071:11:54 Parker: Rog. If you finished [the procedure], that's the correct position.
071:39:01 Allen: Hello, 15; this is Houston. [Pause.]
071:39:08 Irwin: Go ahead, Joe.
071:39:10 Allen: Good morning, Jim. This is your friendly News Reporter on duty now. And I wondered if you'd be interested in something from the local newspapers?
071:39:21 Irwin: Oh, yes. We certainly would.
071:39:26 Allen: Roger. This is from the MOCR Gold Bugle and Taglich Zeitung News. The Administration effort to rescue Lockheed Aircraft cleared a major hurdle in the Senate yesterday when an amendment to deny favored status was rejected 60 to 35. Houston unemployment rose to 4.1 per cent in June, an increase of a full percentage point from May, which is the highest in 6 years. And this morning's Post reports that the checkout of Falcon went on with a few words from Worden and virtually nothing from the other astronauts. However, I think that's incorrect and I enjoyed talking to you very much yesterday. In sporting news, Houston dumped Philadelphia, 6 to 3, and is now in fourth place, 10 games behind the Giants. And an interesting note from the North. Bart Starr underwent surgery yesterday for a bicep tendon transplant and will be out of action for at least 12 weeks. And that's all from the Daily Zeitung this morning. [Pause.]
071:40:54 Scott: Thank you, Joe. Enjoyed it.
071:40:58 Allen: Roger, Dave. Good morning.
071:41:05 Scott: Morning. [Long pause.]
071:41:29 Allen: Al, this is Houston. And we're standing by for your null bias EMS check if you've gotten to that yet.
071:41:43 Worden: Rog. The Delta-V test was good, and the null bias was 1.0.
071:49:25 Allen: Roger, Jim. Just wanted to tell you to expect all your updates on time except the PAD; and we're going to delay the PAD to 72 [hours] plus 50 [minutes] because of very good tracking data we'll be getting in those last few extra minutes there.
071:49:52 Irwin: Okay; understand. Expect the PAD about 72:50.
072:04:48 Allen: Go ahead, 15. This is Houston. We hear you now.
072:04:54 Worden: Morning, José. Say, listen; on this - on the door jettison photography, we've got about 50 per cent left on mag[azine] A, and we thought we would go ahead and use that. [Pause.]
072:05:13 Allen: Good morning, Alfredo. We copied you, but I'm not sure that I understand your question.
072:05:23 Worden: Okay, Joe. No, it's not a question. Just wanted to let you know, on the 16 millimeter photography for the SIM door jett, the Flight Plan called out mag - stand by one. Yeah; it called out mag Echo, and we're going to use mag Alpha instead. We['ve] got about 50 per cent left on it. Just letting you know.
072:05:48 Allen: Okay, Al. Thank you. And, by the way, is that the maneuver where the SIM bay door jettisons the spacecraft?
072:06:00 Worden: It's been variously known as that kind of a maneuver, yeah.
072:06:04 Allen: Roger. I'm looking forward to that.
This is Apollo Control. Everything this morning [is] going along on schedule. Next major event in the mission will be the midcourse correction number 4 maneuver, at the nominal Flight Plan time of 73 hours, 31 minutes, 14 seconds. Looking at a desired velocity change of 5.3 feet per second [1.6 m/s]. The burn will be with the Service Propulsion System on bank B only. All other major burns of the SPS and, in and out of lunar orbit will be made with both banks, bank A having to be switched on manually. Following the midcourse correction, the SIM door jettison; that is the Scientific Instrument Module door covering the scientific gear for orbital science task back in the Service Module, this takes place at 74 hours and 1 minute. The door is 5 feet wide and 9, 9½ feet long [1.5 by 2.9 metres], weighs about 170 pounds [77 kg]. An explosive cord going all the way around the interior of the door will be detonated to actually shear the metal. It's been pregrooved where it can shear along that line, also some booster explosives at each corner of the door will push it out away from the spacecraft at approximately 7 feet per second [2.1 m/s]. The crew at this time will have on their pressure suits in a soft condition, unpressurised, but with helmets and gloves on for the SIM door jettison. This is the first time that the SIM door - the SIM bay has been flown on any Apollo mission. It'll be on all the remaining Apollo missions, the so called J-Mission series. Apollo 15 is now 15,505 nautical miles [28,715 km] from the Moon, approaching at 3,870 feet per second [1,180 m/s]. Rejoining live air/ground. At 72 hours, 16 minutes, Ground Elapsed Time; this is Apollo Control.
072:22:21 Allen: Roger, 15. I have a maneuver PAD, PC plus 2, when you're ready to copy.
072:22:31 Worden: Okay, Joe; stand by one.
072:22:34 Allen: Roger. [Long pause.]
This is Apollo Control. The PC plus 2, the PAD referred to by spacecraft communicator, Joe Allen, is the Pericynthion plus 2-hours Abort PAD, which would be a maneuver...
072:23:21 Worden: Okay, Joe. I'm ready; go ahead.
072:23:24 Allen: Roger. PC plus 2, SPS/G&N. 66313; plus 1.23, minus 0.12; 080:29:13.47; plus 3189.4, minus 2437.0, minus 1356.5; 175, 079, 332; all other is NA; ullage, none; other, burn equals SPS docked. Over.
072:24:42 Worden: Roger, Joe; copy. Plane change plus 2, SPS/G&N; 66313, plus 1.23, minus 0.12; 080:29:13.47; plus 3189.4, minus 2437.0, minus 1356.5; 175, 079, 332; no ullage; and that burn equals SPS docked.
This is Apollo Control. To recapitulate, the Pericynthion plus 2-hour Abort PAD, read up to the crew; ignition time for such an abort, should it become necessary, would be at 80 hours, 29 minutes, 13.47 seconds Ground Elapsed Time, would be a docked burn with the Lunar Module still attached, using the Service Propulsion System. Total velocity change, posigrade 3,189.4 feet per second. Should be getting the maneuver PAD up to the crew before too long for midcourse number 4 at 73 hours, 31 minutes ignition time. Standing by live on air/ground; this is Apollo Control at 72:27.
072:43:45 Irwin: Okay, Joe. I'm ready to copy the midcourse 4 PAD.
072:43:50 Allen: Roger, Jim. Midcourse 4, SPS/G&N; 66531, plus 1.23, minus 0.12; 073:31:14.02; plus 0001.9, minus 0003.6, plus 0003.5; 038, 240, 331 - [Apollo] 15, hold off the P52; we're commanding, and go to P00 and Accept, please.
072:44:53 Scott: Yeah. Rog, Joe.
072:45:01 Irwin: Okay. We - we're back in P00 and Accept. I forgot, there's no uplink activity light in the LEB.
072:45:11 Allen: Roger, 15. I'll continue with the PAD. HA is NA, NA; 0005.4, 0:01, 0003.2; 23, 106.1, 17.6. The rest is NA. GDC Align, Vega, Deneb; roll align, 209, 009, 349; ullage, none. Other: LM weight, 36256; SIM door jett attitude is nominal. Single bank Bravo burn. High Gain: Pitch, 21 [degrees]; Yaw, 243. Over.
072:46:36 Irwin: Okay, Joe. Readback for midcourse 4, SPS/G&N; 66531; plus 1.23, minus 0.12; 073:31:14.02; plus 0001.9, minus 0003.6, plus 0003.5; 038, 240, 331; 0005.4, 0:01, 0003.2; 23, 106.1, 17.6. Vega and Deneb; 209; 009; 349. No ullage. LM weight, 36256; SIM door Jett, attitude nominal. Single bank burn on Bravo. High Gain: Pitch, 21; Yaw, 243.
072:47:34 Allen: Roger, Jim. Sounds good, and it's your computer.
This is Apollo Control. To recap the numbers just read up to the crew of Apollo 15 by their spacecraft communicator, this is a so-called maneuver PAD for the midcourse correction burn number 4 with a time of ignition of 73 hours, 31 minutes, 14 seconds. Total velocity change of 5.4 feet per second [1.65 m/s]. Burn time: 1 second and it'll be with the Service Propulsion System on Bank B. Rejoining somewhat scratchy air/ground as we drift through from one Omni antenna to the other. This is Apollo Control.
072:52:55 Scott: Okay, Houston. Gimbal angles are up [on the DSKY display]. We'll torque them on the minute.
072:53:00 Allen: Roger, 15.
072:54:13 Scott: Houston, 15. Did you get the gyro torquing angles?
072:54:17 Allen: Roger, Dave. We got them. Thank you.
073:32:26 Scott: Okay, Houston. [Apollo] 15 with the burn status report.
073:32:30 Allen: Go ahead, Dave. This is Houston.
073:32:35 Scott: Okay. I guess you could see it was a nice smooth burn. On time. Burn time was a second. Delta-VGX at the end of the burn was .2 [feet per second]; there was no trim; residuals were plus .2, minus .1, plus .1; Delta-VC was a minus 2.3.
073:32:56 Allen: Roger, Dave. We copy. And we think you're bragging, but you have a reason to. Beautiful burn.
073:33:06 Scott: It's all this nice machinery up here, Joe.
This is Apollo Control. Midcourse maneuver number 4 was on time; burn time of eighty one hundredths of one second [actual is 91 hundredths of a second]. Crew reported no residuals or no trim: that is no tweaking maneuvers to take out any errors or dispersions in the burn. Apollo 15 is now 12,421 nautical miles [23,004 km] out from the Moon, approaching at a velocity of 3,974 feet per second [1,211 m/s]. Crew coming up on a suit circuit integrity check in preparation for jettisoning the SIM bay door, that is the panel covering the Scientific Instrument Module in the - back in the Service Module. The comment from the Guidance Officer was that the burn could not have been more nominal. At 73 hours, 37 minutes Ground Elapsed Time; live on Apollo 15 air/ground, this is Apollo Control.
073:52:46 Scott: Okay. Suit pressure integrity check is okay. The flow was about .3 or .4 [pounds per minute]. And we're proceeding into the setup for the SIM bay door jettison, and we'll give you a call when we get everything ready before we blow it.
073:53:03 Allen: Roger, Dave. Sounds good.
073:54:45 Irwin: Houston, this is 15. We're ready to turn Pan Camera Power, On, if you are. [Pause.]
073:54:54 Allen: Roger, Jim. Go ahead.
073:54:58 Irwin: Okay. It's coming on now.
073:57:14 Allen: 15, Houston. [Pause.]
073:57:21 Irwin: Go ahead, Houston.
073:57:23 Allen: Jim, we're not sure that the cameras are running properly. We want you to check the two SEB circuit breakers on panel 5, In, and confirm for us that you got the right talkback when you turned them On. [Pause.]
073:57:39 Irwin: The two circuit breakers on panel 5 are in. Stand by. [Long pause.]
073:58:00 Irwin: Joe, there's no talkback called out here on the [line in the checklist which says] "Pan Camera Power, On." [Long pause.]
073:58:20 Allen: Roger. We copy. [Pause.] And, Jim, apparently, when you turn the power on, you should get about 2 seconds of barber pole, and then back to gray. It may very well have happened and you just didn't notice it.
073:58:44 Irwin: Okay. Stand by. [Long pause.]
073:59:19 Irwin: Houston, this is 15. Do you want us to turn the Pan Camera Power on again and check that talkback a little more carefully? [Long pause.]
073:59:41 Allen: Jim, that sounds like a good...
073:59:43 Irwin: Houston, 15.
073:59:44 Allen: ...idea to us. Would you turn the Pan Camera Power off, wait 30 seconds, and then go back on, watching the barber - the - for the barber pole indication, please.
073:59:56 Irwin: Okay, that's in work.
074:01:12 Irwin: Houston, this is 15.
074:01:15 Allen: Roger. Go ahead.
074:01:19 Irwin: Roger. We have the SM/AC Power, Off, down on 180 [sic], per the P40 checklist. Should we put that power on?
074:01:28 Allen: Jim, that's affirm. That power should be on, and that's probably our problem. Thank you.
074:01:35 Irwin: Okay. [Long pause.]
This is Apollo Control. The SIM [bay] door jettison has been delayed momentarily, until the switches are in the proper position; getting power to the SIM cameras down in the SIM Bay. It's not a time critical event.
074:02:03 Scott: Okay, Houston. The SM/AC Power is On, and the Pan Cameras are [means singular] coming back to power at this time.
074:02:12 Allen: Roger.
074:02:16 Scott: And we got a barber pole for 2 seconds. [Pause.]
074:02:24 Allen: Roger. As advertised. Thank you, Dave. [Pause.]
074:02:30 Scott: Okay. I guess that's a spot in the clean-up of the P40 that didn't get carried over to the Flight Plan.
074:04:41 Irwin: Houston, would you like the SM sector AC Power, Off, for the SIM door jettison?
074:04:48 Allen: That's right, Jim. Per the checklist, the first one in step four.
074:04:56 Irwin: Okay. We just wanted to confirm it.
074:04:59 Allen: Roger. Sounds like a good idea. I think we have a bug or two in this procedure. [Long pause.]
074:05:23 Allen: Apollo 15, Houston. [Pause.]
074:05:31 Scott: Go ahead, Houston,
074:05:34 Allen: Roger, Dave. We're ready for Pan Camera Power to Boost. On your step 2 there, you are Go for SIM door jettison. And we want you to watch the Fuel Cell Reactant valves after the jettison, per the checklist - just a reminder of that. Over.
074:05:58 Scott: Okay; understand. And we are in Boost, and we'll give you a mark when we blow the door.
074:06:07 Allen: Roger. And we will be standing by for a description.
074:06:52 Scott: [I] felt a little shudder, but not too much.
This is Apollo Control. We mark the time of actual SIM [bay] door jettison at 74 hours, 6 minutes, 47 seconds. Rejoining live air to ground.
074:08:17 Scott: Okay, Houston. We have negative visual on the SIM door as of yet. And the fuel cells looked okay. The RCS Bravo primary talkback went to barber pole and is reset, and otherwise no reaction in here.
074:08:34 Allen: Roger, Dave. We copy. And we assume you didn't notice any debris of any kind either.
074:08:47 Scott: Nothing in particular, Joe, and Jim's got a visual now. [Long pause.]
074:09:18 Scott: Okay, Houston. Jim's got it out of his window, and he's taking pictures, and he says it's slowly tumbling.
074:09:26 Allen: Roger. [Long pause.]
074:09:51 Allen: And, 15, just out of interest, we saw a good healthy jolt in our Doppler data down here during jett time.
074:10:02 Scott: Gee, that's very interesting because I would say that the jolt in here was very minor. [Long pause.]
074:10:29 Scott: Houston, 15. I guess the consensus would say that the - the shock was about one-tenth of the other pyros we've seen up to this point.
074:10:42 Allen: Roger, Dave. We copy. Can you still see the world's largest lens cap [the SIM bay door] out the window? [Pause.]
This is Apollo Control. Some distance and velocity figures. Altitude now 10,915 nautical miles [20,215 km] out from the Moon. Approaching at a velocity of 4,042 feet per second [1,232 m/s]. Successful jettison of the SIM bay door at 74:06:47; a few moments late because of getting into the right power set-up for the equipment in the SIM bay, primarily the Mapping and Panoramic Cameras. We rejoin the air/ground as it proceeds toward Lunar Orbit Insertion later today. At 74 hours, 16 minutes Ground Elapsed Time; this is Apollo Control.
074:34:57 Allen: Roger. We've looked ahead in - several hours in our Flight Plan, and we've - see no further inconsistencies between the checklist and the Flight Plan like the small problem we just had with the power. So, just wanted to advise you of - of this, and just follow the Flight Plan as usual. Over.
074:35:22 Worden: Okay, Joe; we'll follow the cookbook. Thank you.
This is Apollo Control. Apollo 15 just crossed the 10 thousand [nautical] mile mark in its approach to the Moon. Distance now 9,975 nautical miles [18,474 km] out. Velocity; 4,092 feet per second [1,247 m/s].
074:49:55 Allen: Roger. I've got a preliminary maneuver PAD for LOI [Lunar Orbit Insertion] when you're ready.
074:50:02 Scott: Okay; stand by one. [Pause.]
074:50:14 Irwin: Okay; stand by one.
074:51:26 Allen: And, Apollo 15, if you'll give us P00 and Accept, please, we'll give you a preliminary state vector, target load, and a REFSMMAT.
074:51:37 Irwin: Okay; you've got P00 and Accept.
074:51:39 Allen: Roger.
074:51:40 Irwin: And I'm ready to copy the preliminary PAD, Joe.
074:51:44 Allen: Roger, Jim. Just out of curiosity, has the SIM bay door long since disappeared from view?
074:51:52 Irwin: Yes, I looked for it a few minutes ago and couldn't see it any longer.
074:51:56 Allen: Okay, thank you. And I'll go ahead with the maneuver PAD. LOI, SPS/G&N; 66244; plus 1.21, minus 0.12; 078:31:34.48; minus 2894.5, minus 0766.4, minus 0112.3; Roll, pitch and yaw, all zips. 0169.5, plus 0058.3; 2996.4, 6:40, 2990.2; 25, 267.1, 228. The rest is NA. GDC Align, Vega - Deneb on zero degrees mark. Roll align, 264; 090; 349. No ullage. LM weight, 36258. Over. [Pause.]
074:54:06 Irwin: Roger, Joe. Readback for LOI: SPS/G&N; 66244; plus 1.21; minus 0.12; 078:31:34.48; minus 2894.5, minus 0766.4, minus 0112.3. All zips for roll, pitch and yaw. 0169.5, plus 0058.3; 2996.4, 6:40, 2990.2; 25, 267.1, 228. Vega and Deneb on the zero mark. 264, 090, and 349. No ullage. LM weight, 36258.
074:55:08 Allen: That sounds good, Jim. Thank you.
This is Apollo Control. To translate what that stream of numbers means, it's a preliminary maneuver PAD for the Lunar Orbit Insertion maneuver later on today. With a time of ignition at - as it stands now of 78 hours, 31 minutes, 34 seconds. Velocity change, retrograde that is, of 2,996 feet per second [913 m/s]. Burn time; 6 minutes, 40 seconds, which would produce a lunar orbit for the pericynthion of 58.3 nautical miles [108 km], apocynthion of 169.5 nautical miles [313.9 km]. Apollo 15 now 9,269 nautical miles [17,166 km] out from Earth [means Moon]. Velocity; 4,137 feet per second [1,261 m/s].
Diagram to explain the Local Vertical frame of reference
This is Apollo Control at 76 hours, 08 minutes Ground Elapsed Time. Apollo 15 crew rather quiet during the past hour or more as they coast in toward the Moon. They're now 6,331 nautical miles [11,725 km] out from the Moon. Velocity continuing to build up; now showing 4,401 feet per second [1,341 m/s]. Here's a call now from the crew.
076:08:41 Worden: Houston, 15. [Long pause.]
076:08:59 Allen: Go ahead 15.
076:09:04 Worden: Rog, Joe. Delta-V test, Null Bias Check. The null bias is 1 foot per second per 100 seconds.
076:09:16 Allen: Okay, Al. We copy. Thank you.
076:09:22 Worden: Rog.
076:09:24 Allen: And, Al, you'll be interested to know that the SIM bay data we're getting so far looks very good.
076:09:33 Worden: Okay, Joe. And you'll be interested to know that there's a very thin, crescent Moon in front of us.
076:09:42 Allen: Roger. We've been suspecting that all along. [Pause.]
076:09:53 Worden: And it may be thin, but it's big.
Diagram of Moon's phase as seen from Earth.
This is Apollo Control at 76 hours, 11 minutes. We're in the process of a shift change in the Control Center now. Flight Director Milt Windler and his team relieving Gerry Griffin and his team of flight controllers. We estimate the change of shift news conference for 1 pm Central Daylight Time. 1 pm Central Daylight Time for the the change of shift news conference.
This is Apollo Control at 76 hours, 39 minutes. Apollo 15 is 5,003 nautical miles [9,266 km] from the Moon, velocity; 4,595 feet per second [1,401 m/s]. There were no air/ground conversations during the news conference. We're back up live now. We'll continue to monitor live.
076:40:50 Irwin: Houston, this is 15. The Pre-LOI Secondary Glycol loop check looked good.
076:40:54 Unknown speaker: Did you turn it?
076:41:00 Henize: 15, we concur. [Long pause.]
076:41:15 Henize: And, 15, I have a TEI-4 PAD for you any time that you have time to copy it.
076:41:24 Irwin: Okay; stand by one. [Long pause.]
076:42:46 Irwin: Okay, Karl. I'm ready to copy the TEI-4 PAD.
076:42:48 Henize: Roger. TEI-4, SPS/G&N, 40015; plus 0.59, plus 1.21; 087:12:40.06; plus 3121.1, minus 2074.0, minus 0643.0; 182, 057, 329; the rest is NA. Ullage, 4 jets, 12 seconds, and this assumes burn undocked; and no DOI; and the roll, pitch, and yaw angles assume landing site REFSMMAT. And that's all.
076:44:12 Goddard: NASA Headquarters, Goddard voice of Net 1.
076:44:39 Irwin: ...6; plus 3121.1, minus 2074.0, minus 0643.0; 182, 057, 329; 4 jets, 12 seconds, assumes burn undocked; and no DOI; landing site REFSMMAT.
076:45:01 Henize: Roger, Jim. The part [of the readback] I got was correct, but we had a loss of comm for the first part. Would you read the - about the first 10 [items] back to me again.
This is Apollo Control at 77 hours, 08 minutes. Apollo 15 now 3,728 nautical miles [6,904 km] from the Moon. Velocity; 4,875 feet per second [1,486 m/s]. The Flight Dynamics Officer [FIDO] has just provided the Flight Director with some times. We expect Loss Of Signal [LOS] as Apollo 15 goes behind the Moon at 78 hours, 23 minutes, 31 seconds. If the Lunar Orbit Insertion burn is not performed, we should acquire the spacecraft signal at 78 hours, 46 minutes, 43 seconds. If we have a nominal LOI burn, we should acquire at 78 hours, 55 minutes, 09 seconds. The FIDO has also taken the final vectors on the S-IVB and here's the final update on the impact time and co-ordinates for the third stage of the Saturn V. Impact time: 79 hours, 24 minutes, 41 seconds; co-ordinates; .9970 south latitude, 11.8719 west longitude. And at 77 hours, 10 minutes; this is Mission Control, Houston.
This is Apollo Control at 77 hours, 23 minutes. We're 1 hour away from LOS now. And Apollo 15 is 3,044 [nautical] miles [5,637 km] from the Moon. Velocity; 5,083 feet per second [1,549 m/s]. We're 1 hour, 7 minutes, 42 seconds away from the Lunar Orbit Insertion burn which will be performed behind the Moon.
077:24:31 Scott: Houston, Apollo 15.
077:24:37 Henize: 15, go ahead. [No answer.]
077:24:56 Henize: 15, this is Houston. Go ahead.
077:24:57 Scott: Houston, Apollo 15.
077:25:05 Henize: 15, this is Houston. Go ahead.
077:25:11 Scott: Okay. We've just made a little mission-rules review up here, and I have one question for you - relative to the circuit breaker on bank A procedure at 6 minutes. Our interpretation of the mission rules says that, if we have a bank B ball valve close prematurely, then we would leave that circuit breaker closed until shutdown, and close - or - until 10 seconds prior to shutdown, using that as our good bank rather than closing it in 6 minutes. And this is in reference to the cue card - at the bottom where it discusses one ball valve closing prematurely. [Pause.]
077:26:06 Henize: Stand by.
077:26:11 Scott: Okay. [Long pause.]
077:26:46 Scott: Houston 15. I'll just repeat it once here, maybe in simpler terms. If bank B closes prematurely, then we'll leave the Pilot Valve [circuit breaker] on A closed until 10 seconds prior to cut-off, instead of at 6 minutes.
077:27:05 Henize: Roger, we copy. [Long pause.]
077:27:28 Henize: 15, Houston. We copy your question and we concur.
077:27:35 Scott: Okay, thank you. Everything else, I think, we have squared away.
077:27:41 Henize: Roger. Milt [Windler, Flight Director] says we owed you a review before every burn. Are you interested in a quick run through of what happens at LOI?
077:27:53 Scott: Sure, why not. Let's do it.
077:27:56 Henize: Okay. As I have it here, starting at T minus 2 - T minus 2 minutes, we close the Main B Pilot Valve circuit breaker. At T minus 5 seconds, we Pro[ceed, i.e. press the Proceed button on the DSKY]. Then the Delta-V Thrust A & B switches both go to Normal. At T plus 5 seconds, we Close the Main A Pilot Valve circuit breaker; and, at T plus 6 minutes, assuming nominal burns, we Open the Main A Pilot Valve circuit breaker; and, after that we avoid PUGS manipulation. And a reminder here is - don't forget to turn on the DSE because we're vitally interested in that single-engine [means single-bank] burn performance. [Pause.]
077:28:53 Scott: Okay, Houston; we're right with you. We've just gone through that and - we understand it. Thank you.
077:28:58 Henize: Very good.
077:30:37 Henize: 15, this is Houston. If you'll give us Accept, we'll send up a new state vector.
077:30:46 Scott: Rog; you got it. P00 and Accept. [Pause.]
077:30:54 Henize: Okay; and I have an LOI PAD for you whenever you're ready to copy.
077:31:01 Irwin: Okay Karl, I'm ready to copy.
077:31:04 Henize: Okay. LOI, SPS/G&N; 66244; plus 1.21, minus 0.12; 078:31:45.91; minus 2897.5, minus 0776.4, minus 0044.1; all zips for roll, all zips for pitch, all zips for yaw; 0169.6, plus 0058.4, 3000.1, 6:41, 2993.9; 25, 267.1, 22.8; the rest is NA. Set stars are Vega and Deneb; 264, 090, 349. No ullage; LM weight 36258. Single-bank burn time is 6 plus 52; and just a reminder that, if bank B doesn't burn, we are expecting you to go into lunar orbit on bank A. [Long pause.]
077:33:10 Irwin: Okay, Karl. LOI PAD readback: SPS/G&N; 66244; plus 1.21, minus 0.12, 078:31:45.91; minus 2897.5, minus 0776.4, minus 0044.1; all zeros for roll, pitch, and yaw; 0169.6, plus 0058.4, 3000,1. 6:41, 2993.9; 25, 267.1, 22.8. Vega, Deneb; 264, 090, 349. No ullage. LM weight, 36258. Single-bank time, 6 plus 52.
077:34:09 Henize: That's all correct. [Pause.] And it's your computer now, 15.
077:34:23 Irwin: Rog. And we also understood that, if bank A doesn't light, we'll take it on in with Bank - I mean, if Bank B doesn't light, we'll take it on in with bank A, We don't need to discuss that.
This is Apollo Control at 77 hours, 36 minutes. We've just passed up the final LOI burn PAD to the crew. Ignition time: 78 hours, 31 minutes, 45.91 seconds. Delta - Delta-V, or change in velocity of 3,000.1 feet per second [914.4 m/s]; burn time of 6 minutes, 41 seconds. The expected resulting orbital parameters: 169.6 by 58.4 nautical miles [314.1 by 108.2 km]. And the Flight Director has updated by a few seconds the acquisition times after LOI. The Loss of Signal time remains the same: 78 hours, 23 minutes, 31 seconds. The 'no burn' acquisition time is 78 hours, 46 minutes, 44 seconds. And the nominal burn acquisition time is 78 hours, 55 minutes, 03 seconds. Apollo 15 now 2,368 nautical miles [4,386 km] from the Moon. Velocity; 5,368 feet per second [1,636 m/s]. At 77 hours, 38 minutes; this is Mission Control, Houston.
077:40:41 Henize: 15, this is Houston. I have a map update, when you have time to copy. [Pause.]
This is Apollo Control at 77 hours, 57 minutes. Telemetry shows that Apollo 15 has maneuvered to the - the maneuver attitude - [correcting himself] the burn attitude. Spacecraft is now 1,431 nautical miles [2,650 km] from the Moon and velocity has increased to 5,966 feet per second [1,818 m/s].
This is Apollo Control at 77 hours, 59 minutes. The Guidance, Navigation and Control Officer [GNC] reports now that Apollo 15 has completed the sextant star check.
This is Apollo Control at 78 hours, 7 minutes. Apollo 15, now, is less than 1,000 [nautical] miles from the Moon; distance, 985 nautical miles [1,824 km]. Velocity; 6,428 feet per second [1,959 m/s]. We're 15 minutes, 45 seconds away from Loss Of Signal as Apollo 15 will go behind the Moon. We're 23 minutes, 50 seconds away from ignition for the Lunar Orbit Insertion burn. At 78 hours, 08 minutes; this is Mission Control, Houston.
This is Apollo Control at 78 hours, 10 minutes. The viewing room behind the Mission Operations Control Room is beginning to fill up now, as we near the Loss Of Signal. All of the Flight Directors are beginning to assemble in the Control Room proper.
This is Apollo Control. We're 5 minutes away from Loss Of Signal now and Apollo 15 is 490 - 484 nautical miles [896 km] from the Moon. Velocity; 7,185 feet per second [2,190 m/s].
078:20:35 Henize: 15, this is Houston. [Pause.]
078:20:35 Scott: Houston, 15. Go.
078:20:44 Henize: Gentlemen, everything looks perfect down here, and - all we can say is, "Have a good burn."
078:20:53 Scott: Okay, thank you. We'll see you on the other side.
078:20:56 Henize: Roger.
One minute to LOS.
And we've had Loss Of Signal. And at that time we showed Apollo 15 [at] 293 nautical miles [543 km] from the Moon. Velocity; 7,624 feet per second [2,324 m/s]. We'll take this line down now and come back up just prior to the no-burn acquisition time. That's 78 hours, 46 minutes, 44 seconds. We'll come up just prior to that time and stand by. At 78 hours, 24 minutes; this is Mission Control, Houston.
078:30:22 Irwin (onboard): ...with a ... Minus 35.
078:30:25 Scott (onboard): Roger.
078:30:27 Irwin (onboard): You guys got all your oxygen?
078:30:30 Scott (onboard): Yes.
078:30:31 Irwin (onboard): Okay.
078:30:33 Worden (onboard): Minus 5 and a Pro, and a Delta-V thrust of plus 5 ... Okay. Pilot Valve, open. Everything else looks good.
078:30:47 Worden/Scott (onboard): One minute.
078:30:59 Worden (onboard): Okay. We've got ... here.
078:31:13 Worden (onboard): Average g is on.
078:31:19 Irwin (onboard): EMS Mode, Normal.
078:31:20 Scott (onboard): EMS Mode's on.
078:31:27 Worden (onboard): And we settle down for the Delta-V thrust.
078:31:29 Scott (onboard): Yes.
078:31:33 Worden (onboard): Sit back and...
078:31:34 Scott (onboard): Looks good.
078:31:38 Worden (onboard): Clear to Pro.
078:31:39 Scott (onboard): Okay. 99 Pro. Ought to be okay.
078:31:44 Worden (onboard): And the Delta-V Thrust is on.
078:31:46 Scott (onboard): Okay.
078:31:47 Worden (onboard): B valves.
078:31:48 Scott (onboard): Ignition. 1...
078:31:49 Worden (onboard): Ignition.
078:31:50 Scott (onboard): ...2, 3, 4, 5...
078:31:53 Worden (onboard): A's coming on. Okay...
078:31:54 Scott (onboard): ...there.
078:31:55 Worden (onboard): ...A valves. PC is reading about 90.
078:31:59 Scott (onboard): Okay.
078:32:01 Worden (onboard): Looks like it's running smooth.
078:32:02 Scott (onboard): ... Okay. The EMS and the Delta-V and the DSKY look good. And we have tight limits. Very smooth.
078:32:35 Scott (onboard): Okay, the DSKY and EMS look good. Still in the tight limits.
078:32:51 Scott (onboard): A minute, and you're tracking Pitch 41.
078:32:56 Worden (onboard): Hmm! Right on, huh? Okay, the pressure's running 95; holding steady.
078:33:05 Scott (onboard): Okay. Keep going on tight limits.
078:33:17 Scott (onboard): The DSKY and the EMS agree. ... watch for the loose limits?
078:33:24 Worden (onboard): Yes. I should be able to ... loose limits.
078:33:27 Scott (onboard): Okay.
078:33:30 Irwin (onboard): Five degrees, Dave. And the balance - unbalance is holding very well. About minus 180.
078:33:35 Worden (onboard): Right on the center of the roll dead band.
078:33:37 Scott (onboard): Dead on it - right on the side of the roll.
078:33:39 Worden (onboard): ... on the roll.
078:33:40 Scott (onboard): Not even on the side. It's only at 4 degrees.
078:33:51 Worden (onboard): We have a Pitch 34. It'll probably stretch out after we go to the single bank insertion.
078:33:57 Scott (onboard): Yes.
078:33:59 Worden (onboard): Any ... loose limits?
078:34:03 Scott (onboard): DSKY and EMS agree pretty well.
078:34:15 Worden (onboard): The DSKY and the EMS are about 12 feet per second difference - is all. That's pretty good.
078:34:21 Scott (onboard): Mm-hmm.
078:34:23 Worden (onboard): ... still no loose limits?
078:34:30 Scott (onboard): That view meter's not even registering.
078:34:50 Worden (onboard): Did you get your watch started on time, Jimmer?
078:34:52 Irwin (onboard): We'll find out.
078:34:54 Worden (onboard): No, I mean, did you?
078:34:55 Irwin (onboard): Yes.
078:34:57 Worden (onboard): Okay, because we need you to tell us at 6 minutes.
078:34:59 Irwin (onboard): Yes, I will.
078:35:03 Scott (onboard): How are the pressures looking over there, Jim?
078:35:04 Irwin (onboard): Beautiful. About 170 on both.
078:35:08 Scott (onboard): Okay.
078:35:09 Worden (onboard): ... about 18?
078:35:10 Scott (onboard): No, we're about 12...
078:35:11 Irwin (onboard): PC is reading 95 and holding steady.
078:35:13 Worden (onboard): Are we 12 feet per second - difference between the EMS and Delta-V?
078:35:18 Scott (onboard): Somebody would chew his ass if it didn't.
078:35:22 Irwin (onboard): PC is creeping up just a little bit.
078:35:25 Worden (onboard): Okay, we're tracking Pitch 33.
078:35:34 Scott (onboard): Okay. Should be approaching the tight limits, Jim.
078:35:48 Irwin (onboard): Okay, you're in tight limits now. About 2½ minutes to go.
078:35:51 Scott (onboard): Okay. We're looking good here.
078:35:55 Irwin (onboard): Okay.
078:35:56 Worden (onboard): PC's about to cross over.
078:35:57 Irwin (onboard): PC's holding about 90 - 96.
078:36:00 Worden (onboard): Okay, we've had cross over.
078:36:02 Scott (onboard): Okay.
078:36:03 Worden (onboard): It crossed a little, but mot much.
078:36:05 Irwin (onboard): Hey, listen. Your PC went up about 2 - about - 2 percent, and it's up to about 98 now.
078:36:13 Scott (onboard): Okay, the EMS and the DSKY are about 10 feet per second difference. We're at tight limits. About 2 minutes to go. G&N's tracking 638.
078:36:29 Worden (onboard): Okay.
078:36:48 Irwin (onboard): Five minutes.
078:36:50 Scott (onboard): Okay. EMS and the DSKY are within about 10 feet per second. Track at 638. Tight limits.
078:37:03 Worden (onboard): Okay. Give me a countdown at 6 minutes.
078:37:06 Irwin (onboard): Okay.
078:37:09 Scott (onboard): You want Jim to count down at 6 minutes?
078:37:10 Worden (onboard): Yes.
078:37:11 Irwin (onboard): You want me to give you a 10-second count?
078:37:13 Worden (onboard): Yes.
078:37:14 Irwin (onboard): Okay.
078:37:24 Worden (onboard): A little dead band in there in the roll?
078:37:26 Scott (onboard): Mmhmm.
078:37:28 Worden (onboard): Okay, about 10 feet per second difference between the EMS and the DSKY, and we're looking good.
078:37:33 Scott (onboard): Pc's varying between about 96 and 98. Looking good thoughl
This is Apollo Control at 78 hours, 45 minutes. We're about a minute and a half away from the no-burn Acquisition Of Signal [AOS] time. If we get a signal at that time it will mean that Apollo 15 did not perform the Lunar Orbit Insertion burn. We're 9 minutes and 38 seconds away from acquisition time for a normal burn. Of course if we get a signal anytime between those two times, it will mean that Apollo 15 has had a partial Lunar Orbit Insertion burn. We'll stand by live through this period.
We're 15 seconds past the no-burn signal time now and still don't have a signal.
We're a minute and a half past the no-burn acquisition time now, so it's obvious that Apollo 15 has done a burn. We'll continue to stand by live up through the nominal acquisition time. [Pause.] I believe Goldstone has AOS.
No. That signal was from the S-IVB Instrument Unit, not from the spacecraft.
We're 3 minutes away from the nominal acquisition time now.
1 minute to go.
10 seconds. AOS on the Command Service Module. We'll allow a little time now for antenna lock up before attempting to talk to the crew but we did get Acquisition Of Signal on time, indicating a good burn.
078:56:19 Henize: 15, this is Houston. How do you read?
078:56:25 Scott: Hello, Houston, the Endeavour's on station with cargo, and what a fantastic sight.
078:56:19 Scott: Oh, this is really profound; I'll tell you, fantastic! [Pause.]
First words from Dave Scott in lunar orbit.
078:56:49 Scott: And we've got a burn status report for you.
078:56:52 Henize: Okay. We're ready to copy whenever you're ready to give it.
078:56:58 Scott: Okay. I think our trusty pilot has a first for you on this one. Burn time was 6 plus 38, ignition was on time; the residuals were 0, 0, and 0. Delta VC, minus 4.8; the fuel, 33.25; the oxidizer, 33.3. [Pause.]
078:57:31 Henize: That's a beautiful job up there. [Pause.]
078:57:37 Scott: And it was a very smooth burn all the way, Karl. There was not a ripple. I guess the only little thing we might comment on was that we had a little PUGS operation after 6 minutes.
078:57:50 Henize: Okay; we copy.
078:58:22 Scott: And Houston. After our first few minutes of looking here, I don't think we'll have any trouble at all finding new things for you for 6 days.
078:58:30 Henize: Good enough. [Pause.]
078:58:40 Henize: 15, Houston. We'd like to know the position of the PU valve and also the Unbalance meter reading. [Long pause.]
078:58:57 Irwin: The Flow Valve is in Decrease right now. The Unbalance is reading about -25, and I put it in the increase position for about 10 seconds after 6 min - after 6 minutes.