| 摘要 |
A nozzle arrangement 10 for an engine that is operable in both an air-breathing mode, in which the engine combusts air taken in from atmosphere with hydrogen from a first store, and in a rocket mode, in which the engine combusts oxygen from a second store with hydrogen from the first store. The nozzle arrangement 10 comprises a rocket combustion chamber 32 fluidly coupled by a rocket throat 33 to a rocket nozzle (35, figure 1). The rocket nozzle comprises a first portion 30 adjacent the rocket throat and a second portion 40 remote from the rocket throat and axially moveable relative to the first portion between a rocket position in which they form a substantially contiguous rocket nozzle and an air-breathing position in which they overlap to define an annular throat 50 there between. The nozzle arrangement further comprises at least one air-breathing combustion chamber 42 arranged to be fluidly coupled to the annular throat when the first and second portions of the nozzle are in the air-breathing position. |
