Napier’s unusual H-shaped engines were originally designed in 1928 with 16 air cooled cylinders. Proposed in 1935, first run in 1937 and type tested in 1940, the Sabre was intended for high-altitude ...

Reaction, which was founded in 1989, is building “Sabre”, short for Synergetic Air Breathing Rocket Engine, a new design that combines a conventional jet with a rocket. Sabre can work like a ...

The Sabre in question was originally manufactured ... The idea was to install a Rocketdyne AR2-3 rocket engine to the ventral ...