Labels:crt screen | dialog box | hakham | monitor | window OCR: Space Shuttle Columbia Length: 122. Wingspan: 78. Fuel: L-Hyd/L 0x Engine Thrust: 375,000 lbs. Solid Rocket Thrust: 3.485. .000 Ibs First Flight: April 1981 First Crew: John Young Robert Crippen ot Missions: Service: 1981 -present One ot the major problems with building the reusable Space Transportation System was developing heat- -shield material that could the stress t0 reentry not once but many times The ablative materials developed or the old X-15 rocket plane and used or the Mercury Gemini and Apollo spacecraft not satisfactorv Ablative substances allowed the reentry vehicle survive but left it with sufficient heat damage to render it unflvable would satisfactory sufficieni
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