Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

Figure 11. The loads in the pitch plane are shown by the solid line marked

Figure 11. The loads in the pitch plane are shown by the solid line marked "STS 51-L RECONST." The curve "STS 51-L PREDICTED" give the loads expected before the flight. The dashed lines show the limit of experience from STS-1 through 61-B. The present design limits are the two lines marked "OV102/099 WING LIMIT" above, and "ET/SRB CAP. ASSESSMENT LIMIT LINE" below. (After STS-6, the wing was strenghtened. The previous design limits were "ET/SRB IVBC 2 DESIGN ENVELOPE" below, and a curve in the position region of q x a [alpha] above).

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