Turbine Powered Aircraft
Aircraft powered by turbinesThe most simple type of turbo prop is made up of an inlet, a condenser, a firing chamber, a turbine and a jet orifice. Incineration gas expands through the turbine. Part of the energy produced by the turbine is used to propel the compression unit. Transfer the remainder to the prop via the gear reducer.
A propulsion orifice provides a relatively small part of the thrusts created by a turbo prop. Unlike a turbine stream, the exhausts from the turbine usually do not contain enough fuel to generate significant thrusts, since almost all of the engine's output is used to propel the turbopropel. While the Soviet Union had the requisite technologies to build the aircraft cell for a jet-powered B-52 Stratofortress type strategically powered air borne aircraft, they instead manufactured the Tupolev Tu-95 Bear, which was powered by four Kuznetsov NK-12 turbo-props and combined with eight counter-rotating thrusters (two per nacelle) at ultrasonic velocities to reach travel velocities in excess of 575 km/h, quicker than many of the first jets and similar to Jet-K jets, and similar to Jet-K jets.
This bear was to be their most popular long-range fighter and symbolic of the projections of Soviet authority throughout the late twentieth centuries. In the 1950' the USA would integrate counter-rotating turboprops such as the Allison T40 disaster turbine - basically a double Allison T38 turboprops engine couple powering counter-rotating thrusters - into a set of test aircraft in the 1950's, with aircraft powered by the T40, such as the Convair R/3Y trade wind aircraft that never entered the US Navyavy.
In comparison to turbo fans, turbo propellers are most effective at airspeeds below 725 km/h (450 mbph; 390 knots) because the beam velocities of the prop (and exhaust) are relatively low. State-of-the-art turbo-prop aircraft run at almost the same cruising pace as small local jets, but consume two-thirds of the total amount of petrol per person.
However, in comparison to a turbo jet (which can climb high altitudes to increase airspeed and propellant efficiency), a prop aircraft has a lower canopy. Small commercial aircraft are the most frequent applications of turbo prop thrusters in civil aircraft, where their higher performance and dependability compensate for higher acquisition costs and higher mileage.
Turbo-prop aircraft have become a favorite for bushplanes such as the Cessna Caravan and Quest Kodiak, as kerosene is more readily available than gas in isolated areas. Due to the high cost of turbo -propulsion, they are used primarily where high short-take-off and runway capabilities (STOL) and low-speed efficiencies are needed.
By 2017, the most widely used turbo-prop aircraft were the ATR 42/72 (950 aircraft), Bombardier Q400 (506) and Dash 8-100/200/300 (374), Beechcraft 1900 (328), de Havilland Canada DHC-6 Twin Otter (270), Saab 340 (225). Less common and older aircraft are the aircrafts Fokker 31, Embraer EMB 120 Brasilia, Fairchild Swearingen Metroliner, Dornier 328, Saab 2000, Xian MA60, MA600 and MA700, Fokker 27 and 50.
Jane's All the World's Aircraft. Turboprop", Pilot's Handbook of Aeronautical Knowledge, Federal Aviation Administration, 2009. smu. edu. <font color="#ffff00">The turboprop archives on April 18, 2015 at the Wayback Machine. Aircraft power and stability. "Aeroplane design: Base concepts filed on April 18, 2015 at the Wayback Machine.
" The Stanford University School of Engineering, Department of Aeronautics and Astronautics Hauptseite Archiviert am 23. Februar 2001 an der Wayback Machine. Nag, P.K. "Basic and Applied Thermodynamics Filed on April 19, 2015 on the Wayback Machine" page 550. "When the bonnet is taken out of the ventilator, a turbo -propulsion is created.
The main difference between turbine fan and turbo prop is their by-pass ratio: 5 or 6 for turbochargers and up to 100 for turbo prop. "Gasturbinenleistung", page 36. ohn Wiley & Sons, April 15, 2008. "Because of its high propulsion efficiencies, it has better propellant economy than a turbocjet or turbine fan.... and achieves propulsion through a high volume stream of compressed exhaust gases from the prop at low speed.
More than 0.6 Mach number the turbo prop again becomes non-competitive, which is mainly due to the higher mass and the front surface. April 10, 2014. An engine before its day. Our contribution - How the flight was launched and familiarized with gas turbines and jet propulsion" Flight, 11 May 1951, p. 569.
Returned on April 4, 2013. May 2017. "The ATSB study finds turboprop engines safe, reliable". H-Series Engine | Engines | B&GA | GE Aviation". www.geaviation.com. Development of jet and turbine aircraft engines, edition 4. Weltenzyklopädie der Flugbwerke, Fifth Edition. "Engines turboprop."