Air tip engine, launch vehicle comprising such engine, and method

A gas tip engine configured to connect to a liquid methane tank and a liquid oxygen tank is provided. The gas tip engine includes a center body including a gas tip nozzle, an outer skirt, and a combustion chamber defined between the outer skirt and the center body. The centerbody is additively manufactured from one or more copper alloys and has a plurality of centerbody inner cooling channels. The outer skirt is additively manufactured from one or more copper alloys and has a plurality of in-skirt cooling channels. The gas tip engine is configured to supply liquid methane and liquid oxygen to the combustion chamber through the internal cooling passage. A stage of a launch vehicle and a launch vehicle comprising such a gas tip engine, as well as a method of reentry of a reusable stage of a launch vehicle comprising a gas tip engine, are also disclosed. 本发明提供了一种被配置为连接到液态甲烷罐和液态氧气罐的气尖引擎。气尖引擎包括中心体，中心体包括气尖喷嘴、外部裙部和限定在外部裙部和中心体之间的燃烧室。中心体由一种或多种铜合金增材制造并具有多个中心体内冷却通道。外裙部由一种或多种铜合金增材制造并具有多个裙部内冷却通道。气尖引擎配置成通过内冷却通道将液态甲烷和液态氧供应到