Reaction Engine's Synergetic Air-Breathing Rocket Engine ... rockets at the Blue Streak and Black Arrow developed. "One of the great advantages of the SABRE propulsion concept is that it is ...

The technological key to Sabre is the “pre-cooler” in front of the engine, which will chill incoming air from 1,000C to -150C in one-hundredth of a second as the spaceplane soars through the ...