A jet-propulsion engine containing neither compressor nor turbine which depends for its operation on the air compression accomplished by the forward motion of the engine. See also pulsejet.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
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Noun
1.
ramjet - a simple type of jet engine; must be launched at high speed
Celerg, itself a son of Aerospatiale (now MBDA, of course) and Societe Nationale des Poudres et Explosifs Energetic Materials, specialised in cast composite propellant, extruded double-base propellant and ramjet propulsion.
It is understood that they are currently investigating the installation of a nose-located ramjet motor that will start to produce thrust only when the projectile's maximum velocity has been achieved soon after firing.
Lockheed Martin along with Aerojet Rocketdyne are said to be jointly developing the plane and would require creating a new type of hybrid engine to reach mach six, one that uses a turbine when it is not going too fast, and a supersonic combustion ramjet when it is ready to move.
Toward the end of book 2, Spitzmiller perpetuates this inaccuracy when he says that "expanding combustion" in a ramjet engine " 'pushes' (Newton's third law) against the 'wall' of incoming air to provide thrust" (p.
The US Air Force's Arnold Engineering Development Center (AEDC) has announced completion of a hot flow test on a dual ramjet and scramjet hypersonic engine for the Falcon combined cycle engine technology (Facet) programme.
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