Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Airbreathing_jet_engine> ?p ?o }
- Airbreathing_jet_engine abstract "An airbreathing jet engine (or ducted jet engine) is a jet engine propelled by a jet of hot exhaust gases formed from heated and expanded air that is drawn into the engine via a compressor, typically a centrifugal or axial type. They are typically gas turbine engines. The opposite of airbreathing jet engines are non-airbreathing jet engines, such as rocket engines, for example, which are propelled by a jet of hot gases created by the chemical reaction of two or more compounds internally. While the majority of the mass flow of an airbreathing jet engine is provided by air taken from outside of the engine and heated internally, using energy stored in the form of fuel, a rocket engine's fuel provides both the energy and the mass flow to create thrust.All practical airbreathing jet engines are internal combustion engines that directly heat the air by burning fuel, with the resultant hot gases used for propulsion via a propulsive nozzle, although other techniques for heating the air have been experimented with (such as nuclear jet engines). Most modern jet engine designs are turbofans, which have largely replaced turbojets. These modern engines use a gas turbine engine core with high overall pressure ratio (about 40:1 in 1995) and high turbine entry temperature (about 1800 K in 1995), and provide a great deal of their thrust with a turbine-power fan stage, rather than with pure exhaust thrust as in a turbojet. These features combine to give a high efficiency, relative to a turbojet. A few jet engines use simple ram effect (ramjet) or pulse combustion (pulsejet) to give compression.The original air-breathing gas turbine jet engine was the turbojet. A concept brought to life by two engineers, Frank Whittle in England United Kingdom and Hans von Ohain in Germany. Compresses and heats air and then exhausts it as a high speed, high temperature jet to create thrust. While these engines are capable of giving high thrust levels, they are most efficient at very high speeds (over Mach 1), due to the low-mass-flow, high speed nature of the jet exhaust. Modern turbofans are a development of the turbojet; they are basically a turbojet that includes a new section called the fan stage. Rather than using all of its exhaust gases to provide direct thrust like a turbojet, the turbofan engine extracts some of the power from the exhaust gases inside the engine and uses it to power the fan stage. The fan stage accelerates a large volume of air through a duct, bypassing the engine core (the actual gas turbine component of the engine), and expelling it at the rear as a jet, creating thrust. A proportion of the air that comes through the fan stage enters the engine core rather than being ducted to the rear, and is thus compressed and heated; some of the energy is extracted to power the compressors and fans, while the remainder is exhausted at the rear. This high-speed, hot-gas exhaust blends with the low speed, cool-air exhaust from the fan stage, and both contribute to the overall thrust of the engine. Depending on what proportion of cool air is bypassed around the engine core, a turbofan can be called low-bypass, high-bypass, or very-high-bypass engines. Low bypass engines were the first turbofan engines produced, and provide the majority of their thrust from the hot core exhaust gases, while the fan stage only supplements this. These engines are still commonly seen on military fighter aircraft, since they provide more efficient thrust at supersonic speeds and have a narrower frontal area, minimizing aerodynamic drag. Their comparatively high noise levels and subsonic fuel consumption are deemed acceptable in such an application, whereas although the first generation of turbofan airliners used low-bypass engines, their high noise levels and fuel consumption mean they have fallen out of favor for large aircraft. High bypass engines have a much larger fan stage, and provide most of their thrust from the ducted air of the fan; the engine core provides power to the fan stage, and only a proportion of the overall thrust comes from the engine core exhaust stream. A high-bypass turbofan functions very similarly to a turboprop engine, except it uses a many-bladed fan rather than a multi-blade propeller, and relies on a duct to properly vector the airflow to create thrust. Over the last several decades, there has been a move towards very high bypass engines, which use fans far larger than the engine core itself, which is typically a modern, high efficiency two or three-spool design. This high efficiency and power is what allows such large fans to be viable, and the increased thrust available (up to 75,000lbs per engine in engines such as the Rolls-Royce Trent XWB or General Electric GENx), have allowed a move to large twin engine aircraft, such as the Airbus A350 or Boeing 777, as well as allowing twin engine aircraft to operate on long overwater routes, previously the domain of 3-engine or 4-engine aircraft.Jet engines were designed to power aircraft, but have been used to power jet cars and jet boats for speed record attempts, and even for commercial uses such as by railroads for clearing snow and ice from switches in railyards (mounted in special rail cars), and by race tracks for drying off track surfaces after rain (mounted in special trucks with the jet exhaust blowing onto the track surface).".
- Airbreathing_jet_engine thumbnail Jet_engine.svg?width=300.
- Airbreathing_jet_engine wikiPageID "27883135".
- Airbreathing_jet_engine wikiPageLength "37017".
- Airbreathing_jet_engine wikiPageOutDegree "142".
- Airbreathing_jet_engine wikiPageRevisionID "705493073".
- Airbreathing_jet_engine wikiPageWikiLink ATREX.
- Airbreathing_jet_engine wikiPageWikiLink Aerodynamic_drag.
- Airbreathing_jet_engine wikiPageWikiLink Aerodynamic_heating.
- Airbreathing_jet_engine wikiPageWikiLink Afterburner.
- Airbreathing_jet_engine wikiPageWikiLink Airbus.
- Airbreathing_jet_engine wikiPageWikiLink Airbus_A350_XWB.
- Airbreathing_jet_engine wikiPageWikiLink Aircraft.
- Airbreathing_jet_engine wikiPageWikiLink Aircraft_Nuclear_Propulsion.
- Airbreathing_jet_engine wikiPageWikiLink Airliner.
- Airbreathing_jet_engine wikiPageWikiLink Aviation_accidents_and_incidents.
- Airbreathing_jet_engine wikiPageWikiLink Axial_compressor.
- Airbreathing_jet_engine wikiPageWikiLink Bahir_Dar.
- Airbreathing_jet_engine wikiPageWikiLink Biofuel.
- Airbreathing_jet_engine wikiPageWikiLink Boeing_737.
- Airbreathing_jet_engine wikiPageWikiLink Boeing_777.
- Airbreathing_jet_engine wikiPageWikiLink Bypass_ratio.
- Airbreathing_jet_engine wikiPageWikiLink Category:Jet_engines.
- Airbreathing_jet_engine wikiPageWikiLink Centrifugal_compressor.
- Airbreathing_jet_engine wikiPageWikiLink Cockpit.
- Airbreathing_jet_engine wikiPageWikiLink Columbidae.
- Airbreathing_jet_engine wikiPageWikiLink Combustor.
- Airbreathing_jet_engine wikiPageWikiLink Composite_material.
- Airbreathing_jet_engine wikiPageWikiLink Compressor_stall.
- Airbreathing_jet_engine wikiPageWikiLink Constant-speed_propeller.
- Airbreathing_jet_engine wikiPageWikiLink Cowling.
- Airbreathing_jet_engine wikiPageWikiLink Cruise_missile.
- Airbreathing_jet_engine wikiPageWikiLink Dassault_Falcon.
- Airbreathing_jet_engine wikiPageWikiLink De_Laval_nozzle.
- Airbreathing_jet_engine wikiPageWikiLink ETOPS.
- Airbreathing_jet_engine wikiPageWikiLink Electrolysis.
- Airbreathing_jet_engine wikiPageWikiLink Engineer.
- Airbreathing_jet_engine wikiPageWikiLink England.
- Airbreathing_jet_engine wikiPageWikiLink Epicyclic_gearing.
- Airbreathing_jet_engine wikiPageWikiLink Ethiopian_Airlines.
- Airbreathing_jet_engine wikiPageWikiLink Fighter_aircraft.
- Airbreathing_jet_engine wikiPageWikiLink File:Jet_engine.svg.
- Airbreathing_jet_engine wikiPageWikiLink Frank_Whittle.
- Airbreathing_jet_engine wikiPageWikiLink Free_turbine.
- Airbreathing_jet_engine wikiPageWikiLink Fuselage.
- Airbreathing_jet_engine wikiPageWikiLink Gas_compressor.
- Airbreathing_jet_engine wikiPageWikiLink Gas_generator.
- Airbreathing_jet_engine wikiPageWikiLink Gas_turbine.
- Airbreathing_jet_engine wikiPageWikiLink General_Electric_GEnx.
- Airbreathing_jet_engine wikiPageWikiLink George_Brayton.
- Airbreathing_jet_engine wikiPageWikiLink Germany.
- Airbreathing_jet_engine wikiPageWikiLink Global_dimming.
- Airbreathing_jet_engine wikiPageWikiLink Hans_von_Ohain.
- Airbreathing_jet_engine wikiPageWikiLink Helicopter.
- Airbreathing_jet_engine wikiPageWikiLink Human_factors_and_ergonomics.
- Airbreathing_jet_engine wikiPageWikiLink Hydraulic_machinery.
- Airbreathing_jet_engine wikiPageWikiLink Internal_combustion_engine.
- Airbreathing_jet_engine wikiPageWikiLink James_Prescott_Joule.
- Airbreathing_jet_engine wikiPageWikiLink Jet_aircraft.
- Airbreathing_jet_engine wikiPageWikiLink Jet_car.
- Airbreathing_jet_engine wikiPageWikiLink Jet_engine.
- Airbreathing_jet_engine wikiPageWikiLink Jet_fuel.
- Airbreathing_jet_engine wikiPageWikiLink Jetboat.
- Airbreathing_jet_engine wikiPageWikiLink John_Barber_(engineer).
- Airbreathing_jet_engine wikiPageWikiLink Landing.
- Airbreathing_jet_engine wikiPageWikiLink Lapwing.
- Airbreathing_jet_engine wikiPageWikiLink Liquid_hydrogen.
- Airbreathing_jet_engine wikiPageWikiLink Mach_number.
- Airbreathing_jet_engine wikiPageWikiLink Mechanical_fan.
- Airbreathing_jet_engine wikiPageWikiLink Missile.
- Airbreathing_jet_engine wikiPageWikiLink Mole_(unit).
- Airbreathing_jet_engine wikiPageWikiLink Motorjet.
- Airbreathing_jet_engine wikiPageWikiLink Nozzle.
- Airbreathing_jet_engine wikiPageWikiLink Order_of_magnitude.
- Airbreathing_jet_engine wikiPageWikiLink Overall_pressure_ratio.
- Airbreathing_jet_engine wikiPageWikiLink Oxygen.
- Airbreathing_jet_engine wikiPageWikiLink Paris.
- Airbreathing_jet_engine wikiPageWikiLink Project_Pluto.
- Airbreathing_jet_engine wikiPageWikiLink Propeller.
- Airbreathing_jet_engine wikiPageWikiLink Propelling_nozzle.
- Airbreathing_jet_engine wikiPageWikiLink Pulse_detonation_engine.
- Airbreathing_jet_engine wikiPageWikiLink Pulsejet.
- Airbreathing_jet_engine wikiPageWikiLink Pump-jet.
- Airbreathing_jet_engine wikiPageWikiLink Rail_transport.
- Airbreathing_jet_engine wikiPageWikiLink Rail_yard.
- Airbreathing_jet_engine wikiPageWikiLink Railroad_switch.
- Airbreathing_jet_engine wikiPageWikiLink Ramjet.
- Airbreathing_jet_engine wikiPageWikiLink Reaction_Engines_A2.
- Airbreathing_jet_engine wikiPageWikiLink Redox.
- Airbreathing_jet_engine wikiPageWikiLink Revolutions_per_minute.
- Airbreathing_jet_engine wikiPageWikiLink Rocket_engine.
- Airbreathing_jet_engine wikiPageWikiLink Rolls-Royce_Holdings.
- Airbreathing_jet_engine wikiPageWikiLink Rolls-Royce_Trent_XWB.
- Airbreathing_jet_engine wikiPageWikiLink SABRE_(rocket_engine).
- Airbreathing_jet_engine wikiPageWikiLink Scramjet.
- Airbreathing_jet_engine wikiPageWikiLink Skylon_(spacecraft).
- Airbreathing_jet_engine wikiPageWikiLink Specific_thrust.
- Airbreathing_jet_engine wikiPageWikiLink Statistical_model.
- Airbreathing_jet_engine wikiPageWikiLink Steam_reforming.
- Airbreathing_jet_engine wikiPageWikiLink Supersonic_aircraft.