A jet engine is a reaction engine that discharges a fast moving jet which generates thrust by jet propulsion in accordance with Newton's laws of motion. This broad definition of jet engines includes turbojets, turbofans, rockets, ramjets, and pulse jets. In general, most jet engines are internal combustion engines but non-combusting forms also exist.
In common parlance, the term jet engine loosely refers to an internal combustion airbreathing jet engine (a duct engine). These typically consist of an engine with a rotary (rotating) air compressor powered by a turbine ("Brayton cycle"), with the leftover power providing thrust via a propelling nozzle. These types of jet engines are primarily used by jet aircraft for long-distance travel. Early jet aircraft used turbojet engines which were relatively inefficient for subsonic flight. Modern subsonic jet aircraft usually use high-bypass turbofan engines which offer high speed with fuel efficiency comparable (over long distances) to piston and propeller aeroengines.
Other articles related to "jet engine, jet engines, jet, engines, engine, jets":
... As the name suggests, Jet engine compressors provide the compression part of the jet engine thermodynamic cycle ... There are three basic categories of jet engine compressor Axial compressor Centrifugal compressor Mixed flow compressor Axial compressors are used in medium to large thrust jet engines ...
12 October 1956 – First test run of jet engine Pirna 014 March 1958 – First presentation of airplane 152 and jet engine Pirna 014 at the Leipzig. 9 September 1959 – Testing of Pirna 014 jet engines on test plane Ilyushin Il-28R 30 July 1960 – Start of ground testing for 152/II V4 plane 26 August 1960 – First flight of ...
... as the discoverer of the Coandă effect but give Hans von Ohain the honour of designing the first jet engine to power an aircraft in manned flight, and Frank ... and LeRoy Cook state that Coandă's 1910 aircraft was the first jet ... in which he gave Coandă credit for the first jet engine ...
... The major components of a jet engine are similar across the major different types of engines, although not all engine types have all components ... parts include Cold Section Air intake (Inlet) — The standard reference frame for a jet engine is the aircraft itself ... For subsonic aircraft, the air intake to a jet engine presents no special difficulties, and consists essentially of an opening which is designed to minimise drag, as with any other aircraft component ...
... Noise is due to shockwaves that form when the exhaust jet interacts with the external air ... proportional to the thrust as well as proportional to the fourth power of the jet velocity ... Generally then, the lower speed exhaust jets emitted from engines such as high bypass turbofans are the quietest, whereas the fastest jets, such as rockets and ...
Famous quotes containing the words engine and/or jet:
“There is a small steam engine in his brain which not only sets the cerebral mass in motion, but keeps the owner in hot water.”
—Unknown. New York Weekly Mirror (July 5, 1845)
“I cannot beat off
Invincible modes of the sea, hearing:
Be a man my son by God.
He turned again
To the purring jet yellowing the murder story,
Deaf to the pathos circling in the air.”
—Allen Tate (18991979)