L220第一级长z3.6米,结构重量l 7 28吨,装载228吨四氧化二氮(氧化剂)和偏二甲肼水台肼(uH25__75％偏■甲肼和25％水合肼的混合物),分置在阿个不锈钢贮箱内。推进剂旷:箱直释3.8米,由一箱间段连接。箱间段有一容积为8.2立方术的水箱。在火箭飞行期恻,同发动机连接的燃气发生器所 L220 The first stage has a length of 3.6 meters and a construction weight of 1728 tons. It is loaded with 228 tons of nitrous oxide (oxidant) and UDMH hydrazine (a mixture of uH25__75% partial hydrazine and 25% hydrazine hydrate) , Separated in a stainless steel tank. Propellant Kuang: straight release 3.8 meters box, connected by a box. The compartment has a cubage of 8.2 cubes. In the rocket flight 恻, with the engine connected to the gas generator