产品。Mission Elements ISRU-Construction Influence ISRU-Construction Needs ISRU-Construction Products Descent/Ascent - Propellant options - Vehicles designed to use ISRU - O 2 , H 2 , CH 4 , other Vehicles - Descent/ascent vehicle size & available payload capability - Lander/ascent vehicle Delta-V/ Rendeqvous Orbit - Lander/engine configuration - Lander servicing design and capability -可重复使用/表面跳跃