Launch Weather[1]

 

 

Apollo 7

Apollo 8

Apollo 9

Apollo 10

Apollo 11

Apollo 12

Apollo 13

Apollo 14

Apollo 15

Apollo 16

Apollo 17

 

 

 

 

 

 

 

 

 

 

 

 

Surface Observations

 

 

 

 

 

 

 

 

 

 

 

Pressure (lb/in)

14.765

14.804

14.642

14.779

14.798

14.621

14.676

14.652

14.788

14.769

14.795

Temperature (F)

82.9

59.0

67.3

80.1

84.9

68.0

75.9

71.1

85.6

88.2

70.0

Relative Humidity

65%

88%

61%

75%

73%

92%

57%

86%

68%

44%

93%

Dew Point (F)

70

56

53

72

75

65

60

67

74

62.6

68.0

Visibility (s mi)

11.5

9.9

9.9

11.2

9.9

3.7

9.9

9.9

9.9

9.9

6.8

 

 

 

 

 

 

 

 

 

 

 

 

Surface Wind Conditions

 

 

 

 

 

 

 

 

 

 

 

1st Level Wind Site (ft)

64.0

60.0

60.0

60.0

60.0

60.0

60.0

60.0

60.0

60.0

60.0

1st Level Wind Speed (ft/sec)

33.5

18.7

22.6

32.2

10.8

22.3

20.7

16.4

16.7

20.7

13.5

1st Level Wind Direction (deg)

090

348

160

142

175

280

105

255

156

269

005

2nd Level Wind Site (ft)

N/R[2]

N/R

N/R

N/R

N/R

N/R

N/R

530.0

530.0

530.0

530.0

2nd Level Wind Speed (ft/sec)

N/R

N/R

N/R

N/R

N/R

N/R

N/R

27.9

17.7

16.7

17.7

2nd Level Wind Direction (deg)

N/R

N/R

N/R

N/R

N/R

N/R

N/R

275

158

256

335

 

 

 

 

 

 

 

 

 

 

 

 

Cloud Coverage

 

 

 

 

 

 

 

 

 

 

 

1st Level Cover

30%

40%

70%

40%

10%

100%/rain

40%

70%

70%

20%

20%

1st Level Type

Cumulonimbus

Cirrus

Stratocumulus

Cumulus

Cumulus

Stratocumulus

Altocumulus

Cumulus

Cirrus

Cumulus

Stratocumulus

1st Level Altitude (ft)

2,100

N/R

3,500

2,200

2,400

2,100

19,000

4,000

25,000

3,000

26,000

2nd Level Cover

---

---

100%

20%

20%

---

100%

20%

---

---

50%

2nd Level Type

---

---

Altostratus

Altocumulus

Altocumulus

---

Cirrostratus

Altocumulus

---

---

Cirrus

2nd Level Altitude (ft)

---

---

9,000

11,000

15,000

---

26,000

8,000

---

---

26,000

3rd Level Cover

---

---

---

100%

90%

---

---

---

---

---

---

3rd Level Type

---

---

---

Cirrus

Cirrostratus

---

---

---

---

---

---

3rd Level Altitude (ft)

---

---

---

Unknown

Unknown

---

---

---

---

---

---

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Wind Speed/Ascent

 

 

 

 

 

 

 

 

 

 

 

Speed (ft/sec)

136.2

150.9

250.0

154

203

256

246

207

249.3

85.6

252.6

Altitude (ft)

172,000

108,300

38,480

295,276

183,727

180,446

256,562

193,570

182,900

38,880

145,996

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Dynamic Pressure

 

 

 

 

 

 

 

 

 

 

 

Ground Elapsed Time (sec)

75.5

78.9

85.5

82.6

83.0

81.1

81.3

81.0

82.0

86.0

82.5

Max q (lb/ft2)

665.60

776.938

630.73

694.232

735.17

682.95

651.63

655.8

768.58

726.81

701.75

Altitude (ft)

39,903

44,062

45,138

43,366

44,512

42,133

40,876

40,398

44,971

47,122

42,847

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Wind Conditions in

   High Dynamic Pressure Region

 

 

 

 

 

 

 

 

 

 

 

Altitude (ft)

44,500

49,900

38,480

46,520

37,400

46,670

44,540

43,270

45,110

38,880

39,945

Wind Speed (ft/sec)

51.1

114.1

250.0

139.4

31.6

156.1

182.5

173.2

61.1

85.6

147.9

Wind Direction (deg)

309

284

264

270

297

245

252

255

063

257

311

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Wind Components

 

 

 

 

 

 

 

 

 

 

 

Pitch Plane - Pitch (ft/sec)

51.8

102.4

244.4

133.9

24.9

154.9

182.4

173.2

-58.4

85.3

114.2

Pitch Plane - Altitude (ft)

36,800

49,500

38,390

45,280

36,680

46,670

44,540

43,720

45,030

38,880

39,945

Yaw Plane - Yaw (ft/sec)

51.5

74.1

71.2

61.4

23.3

-64.0

49.2

81.7

24.0

41.0

95.8

Yaw Plane - Altitude (ft)

47,500

51,800

37,500

48,720

39,530

44,780

42,750

33,460

44,040

50,850

37,237

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Shear Values

   (D h=1000 m)

 

 

 

 

 

 

 

 

 

 

 

Pitch Plane Shear (sec-1)

0.0113

0.0103

0.0248

0.0203

0.0077

0.0183

0.0166

0.0201

0.0110

0.0095

0.0177

Pitch Plane Altitude (ft)

48,100

52,500

49,700

50,200

48,490

46,750

50,610

43,720

36,830

44,780

26,164

Yaw Plane Shear (sec-1)

0.0085

0.0157

0.0254

0.0125

0.0056

0.0178

0.0178

0.0251

0.0071

0.0114

0.0148

Yaw Plane Altitude (ft)

46,500

57,800

48,160

50,950

33,790

47,820

45,850

38,880

47,330

50,850

34,940

 

 

 

 

 

 

 

 

 

 

 

 

Maximum % Density Deviations

 

 

 

 

 

 

 

 

 

 

 

Negative Deviation From PRA63[3]

-0.1

-0.7

-6.1

-1.0

-0.2

-7.6

-2.8

-5.0

None

-0.8

-0.0

Altitude (n mi)

4.32

4.32

7.56

4.32

4.45

8.50

7.69

7.69

None

4.86

0.00

Positive Deviation from PRA63

+1.3

+3.3

None

+3.3

+4.4

+1.2

+0.5

None

+4.2

+4.0

+1.7

Altitude (n mi)

5.80

8.50

None

7.56

7.69

5.67

8.64

None

7.56

8.64

7.02

 


 

[1] Compiled from Saturn launch vehicle reports, trajectory reconstruction reports, and Summary of Atmospheric Data Observations For 155 Flights of MSFC/ABMA Related Aerospace Vehicles.

[2] This measurement not used or not recorded at launch time.

[3] Patrick Air Force Base Reference Atmosphere, 1963.

 

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