However, as a vehicle’s altitude and speed change, the ideal nozzle shape changes too, which is why rockets often require multiple stages. The aerospike engine offers a different approach.

Among the investors was André-Hubert Roussel, former CEO of ArianeGroup, who oversaw the development of Europe’s only ...

Unlike the conventional bell-shaped nozzle we are all familiar with, the aerospike channels supersonic ... cryogenic liquid ...