The Ivchenko Progress D-36 (also known as Lotarev D-36) is a three-shaft high bypass ratio
turbofan
The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which ac ...
currently produced by the Ukrainian
Motor Sich
The Motor Sich Joint Stock Company ( uk, АТ «Мотор Січ») is a Ukrainian aircraft engine manufacturer headquartered in Zaporizhzhia. The company manufactures engines for airplanes and helicopters, and also industrial marine gas turbi ...
company.
Motor Sich D-36 product page
Retrieved: 6 January 2013
Design and development
The engine was developed for the Yak-42
The Yakovlev Yak-42 (russian: Яковлев Як-42; NATO reporting name: "Clobber") is a 100/120-seat three-engined mid-range passenger jet developed in the mid 1970s to replace the technically obsolete Tupolev Tu-134. It was the first airli ...
, An-72
The Antonov An-72 (NATO reporting name: Coaler) is a Soviet/Ukrainian transport aircraft, developed by Antonov. It was designed as an STOL transport and intended as a replacement for the Antonov An-26, but variants have found success as commer ...
and An-74
The Antonov An-74 (NATO reporting name: Coaler) is a Soviet/Ukrainian transport aircraft developed by Antonov. It is a variant of the An-72.
The An-72 and An-74 get their nickname, , from the large engine intake ducts, which resemble the overs ...
aircraft and was very advanced when it was first introduced in the 1970s. The engine was designed by Vladimir Lotarev. The first test runs began in 1971, first flight tests followed in 1974, serial production began in 1977.
The engine has a single-stage fan with 29 titanium
Titanium is a chemical element with the symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion i ...
blades and a Kevlar
Kevlar (para-aramid) is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965, the high-strength material was first used commercially in the early 1970s a ...
outer shell, which is driven by a three-stage turbine
A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating ...
. The six-stage low pressure compressor
Low or LOW or lows, may refer to:
People
* Low (surname), listing people surnamed Low
Places
* Low, Quebec, Canada
* Low, Utah, United States
* Lo Wu station (MTR code LOW), Hong Kong; a rail station
* Salzburg Airport (ICAO airport code: L ...
with titanium blades is driven by a single-stage non-cooled low pressure turbine. The seven-stage high-pressure compressor with steel blades is driven by a steel bladed high-pressure turbine.
Since the tradition in the Soviet era was to gradually and continuously improve engines in serviceability, engines went from Series 1 to 3A (depending on the application). The Series 1 (used on Yak-42D) did not feature any reverse thrust system however, series 1A to 3A were fitted with bucket-type thrust reversers (used on An-72/An-74). The most recent upgrade (after the Soviet breakup) is Series 4A which has been in manufacture since 2002. Improvements included updated curved titanium blades and a built-in reverse thrust
Thrust reversal, also called reverse thrust, is the temporary diversion of an aircraft engine's thrust for it to act against the forward travel of the aircraft, providing deceleration. Thrust reverser systems are featured on many jet aircraft to ...
device. More advanced blade design along with proprietary wear-resistant and heat-protective coatings have resulted in improved specific fuel consumption (kg/h/kgf) dropping from 0.65 to 0.63. Specified service life has also improved exponentially to 40,000 hours. The current application for Series 4A is on An-74TK-300
The Antonov An-74 (NATO reporting name: Coaler) is a Soviet/Ukrainian transport aircraft developed by Antonov. It is a variant of the An-72.
The An-72 and An-74 get their nickname, , from the large engine intake ducts, which resemble the over ...
.
Specifications
See also
References
{{Ivchenko aeroengines
Ivchenko-Progress aircraft engines
High-bypass turbofan engines
1970s turbofan engines
Three-spool turbofan engines