美国商业太空发射服务商平流层发射系统公司已经选择轨道科学公司为其建造世界上最大的空射运载火箭。该火箭为三级火箭。首选使用液体和固体燃料,火箭整流罩直径5米(这一尺寸是EELV所能携带的最大有效载荷尺寸),将把6800千克有效载荷送入低地球轨道,能将更小的有效载荷送入地球静止转移轨道。火箭上还将设有一个通用 US commercial space launch service provider Stratospheric Launch Systems has chosen orbital science company to build the world’s largest air-launched carrier rocket. The rocket is a three-stage rocket. The preferred use of liquid and solid fuels, with a rocket cowling diameter of 5 meters (this size is the maximum payload size EELV can carry), will send 6800 kilograms of payload into low earth orbit, enabling smaller payloads to be fed Earth’s static transfer orbit. The rocket will also have a universal