| Гү.
Gallons) Liquid hydrogen (fuel) and nitrogen tetroxide (oxidizer) —sn——À""vsz4€"—— HY———————————————————————————————v—————n—— 4-4 4. ORBITER SYSTEMS ................... 4-1 Propulsion ............................ 4-3 Power Generation ..................... 4-9 Environmental Control and Life Support System s. Last eres 4-17 Thermal Protection The overall height of his skill, administered to a mixture of activated.