Sentences with phrase «ramjet engines»

Faster — and quieter — airplanes NASA's hypersonics research is pushing aviation speed limits with ultrafast scramjets (supersonic combustion ramjet engines): In 2004, the agency's unmanned hypersonic X-43A craft briefly reached Mach 9.6 (about 7,000 miles per hour)-- a record for an air - breathing engine.

Not exact matches

In comparison to turbojet and turbofan engines, which have high thrust levels, ramjet and scramjet engines are simpler in design as they lack rotating components (and therefore do not have major moving parts such as spinning blades).

Something that could be obtainable in a decade or two is using a hypersonic ramjet stage [an extremely fast type of jet engine] to get up to a very high speed in the atmosphere and then launching something from it into orbit.

Wurst's idea is to mate the engine with a new airplane design, take the craft up to an altitude of about 30 miles, at which point the ramjets can no longer be used, coast to an altitude of 60 miles, then release the satellite payload with a small conventional rocket attached.

Like jet engines, ramjets mix and compress incoming air with fuel, but they do so with a clever geometric design rather than with huge compressor blades.

Rather than use rocket engines, which have to lug their own oxygen, Wurst wants to use a ramjet, a sort of super jet engine commonly used on planes that travel three or more times the speed of sound.