Ramjet Engine

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, ramjet engine
a. a type of jet engine in which fuel is burned in a duct using air compressed by the forward speed of the aircraft
b. an aircraft powered by such an engine
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ramjet Engine


an air-breathing jet engine in which air entering the engine’s combustion chamber is compressed during flight by the action of the ram effect.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

ramjet engine

[′ram‚jet ‚en·jən]
(aerospace engineering)
A type of jet engine with no mechanical compressor, consisting of a specially shaped tube or duct open at both ends, the air necessary for combustion being shoved into the duct and compressed by the forward motion of the engine; the air passes through a diffuser and is mixed with fuel and burned, the exhaust gases issuing in a jet from the rear opening.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Vedeshkin et al., "Supersonic pulse detonation ramjet engine: new experimental and theoretical results," in Application of Detonation to Propulsion, G.
* Control of ramjet engine by varying ramp shape can attained easily.
* Ramjet engine can be controlled by varying ramp angle for both weak and strong shock solution is possible.
The scramjet is a ramjet engine in which the airflow through the whole engine remains supersonic.
Again, range is classified, but the Asmp-C was announced with a range of over 400 km with its improved ramjet engine. The first of five planned contracts was recently awarded, covering half of the development phase.
The Yakhont is touted as possessing an over-the-horizon range, a dual-mode radar seeker, a ramjet engine for supersonic speed (up to Mach 2.5) at all flight phases -- including sea-skimming mode -- and a multiplatform capability, allowing use by surface ships of all major classes, submarines and ground-based launchers.
To date, a one-metric-ton-thrust hydrogen-powered ramjet engine has been tested and there are plans to test a 10-metric-ton-thrust engine over the next three and a half years.
"In a nutshell, our new facility is for testing solid fuel ramjet engines and there are a couple of things that distinguish it from most of the others that are available," said Orbital ATK's missile products divisional vice-president and general manager, Pat Nolan.
Ramjet engines, currently used in missiles, will then take the plane up to altitudes of 32km as the plane cruises at speeds beyond Mach 4, or four times the speed of sound.
The Vesta (see title picture) programme is aimed at studying new ramjet engines to power the Asmpa--a further development that will be introduced on the Rafale in 2008.
Conceived in 1946 and scarcely more than a frame with a rotor and tail, the XH-20 was powered by two ramjet engines that, like the aircraft, were developed by James S.
Such heating would destroy turbine or ramjet engines constructed of any known material.