Inert propellants were simulated the high-altitude portion of Europe, are similar.

7-1.—Space Shuttle flightcrew complement. 7-6 TABLE 7-1.—FLIGHTCREW COMPLEMENT Crewmember Orbiter Spacelab only module Commander 1 1 AND 2) m ^ FUEL TANK = APU SYSTEM 3 3) APU ES SEAL CAVITY ! DRAIN APU 2 AS DÍ eS A | FUEL LINE | < APU 1 9 Y OlL COOLING | | я ЖУ р р , P HEATED GAS ''2*4, 4 LM 7.