Aerospike engine first test flight

[GregLocock]

World's first aerospike rocket test mid-flight successful

In a feat that can only be described as legendary, and after many months and a catastrophic setback, Polaris Spaceplanes has finally accomplished something that's never been done before: lit the fuse of an aerospike rocket in flight.

newatlas.com

Great fun.

Different company uses AI to optimise its design

AI-designed, monolithic aerospike engine successfully hot-fired

Showing how far AI engineering has come, a new aerospike engine burning oxygen and kerosene capable of 1,100 lb (5,000 N) of thrust has successfully been hot-fired for 11 seconds. It was designed from front to back using an advanced Large Computational Engineering Model.

newatlas.com