The Saturn/Lyulka AL-34 was an unbuilt

turboshaft A turboshaft engine is a form of gas turbine that is optimized to produce shaft horsepower rather than jet thrust. In concept, turboshaft engines are very similar to turbojets, with additional turbine expansion to extract heat energy from the ex ...

turboprop A turboprop is a Gas turbine, gas turbine engine that drives an aircraft Propeller (aeronautics), propeller. A turboprop consists of an intake, reduction drive, reduction gearbox, gas compressor, compressor, combustor, turbine, and a propellin ...

engine for rotary and fixed-wing aircraft, proposed by the

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

in the early 1990s. In turboprop form, the engine was offered for light aircraft such as the

Sukhoi The JSC Sukhoi Company (, ) is a Russian aircraft manufacturer headquartered in Begovoy District, Northern Administrative Okrug, Moscow, that designs both civilian and military aircraft. Sukhoi was founded in the Soviet Union by Pavel Sukhoi ...

Su-86 eight-passenger business airplane, the Myasishchev M-101T Gzhel business jet, the ROS-Aeroprogress T-101 Grach nine-passenger aircraft, its derivative T-108 Zolotoy Orel nineteen-passenger aircraft, and the Krunichev T-511 "AIST-M". As a turboshaft, the AL-34 was proposed to power the Mil Mi-54 and the

Kazan Ansat The Kazan Ansat is a Russian light, multipurpose helicopter manufactured by Kazan Helicopters. History Kazan Helicopters in Kazan, Tatarstan, Russia has been one of the main Russian manufacturers of helicopters of the Mikhail Mil bureau design. ...

helicopters. The engine was also considered for unconventional aircraft such as the

Mil Mi-30 The Mil Mi-30 Vintoplan was a Russian tiltrotor STOL/VTOL concept that originated in 1972. The Vintoplan would have been a transport aircraft for up to 19 passengers or two tons of cargo. Its purpose was to replace the Mi-8 and Mi-17 helicopters. ...

L Vintoplan

tiltrotor A tiltrotor is an aircraft that generates lift (force), lift and thrust, propulsion by way of one or more powered Helicopter rotor, rotors (sometimes called ''proprotors'') mounted on rotating shaft (mechanical engineering), shafts or nacelles ...

aircraft, and it was to be an auxiliary engine for powering the

boundary layer control In engineering, boundary layer control refers to methods of controlling the behaviour of fluid flow boundary layers. It may be desirable to reduce flow separation on fast vehicles to reduce the size of the wake (streamlining), which may reduce ...

system and air cushion on the

EKIP EKIP (translated from , the Russian acronym for "", which means "Ecology and Progress") is the Soviet and Russian project of a multifunctional aerodrome-free aircraft, built according to the "flying wing" scheme, with an elliptically shaped fus ...

flying saucer A flying saucer, or flying disc, is a purported type of disc-shaped unidentified flying object (UFO). The term was coined in 1947 by the United States (US) news media for the objects pilot Kenneth Arnold UFO sighting, Kenneth Arnold claimed fl ...

flying wing A flying wing is a tailless fixed-wing aircraft that has no definite fuselage, with its crew, payload, fuel, and equipment housed inside the main wing structure. A flying wing may have various small protuberances such as pods, nacelles, blis ...

aircraft). The AL-34 was one of the few engines to use a

recuperator A recuperator (electro- end carbogidro-) - is a special purpose countercurrent exchange, counter-flow energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an in ...

to recover and reuse

waste heat Waste heat is heat that is produced by a machine, or other process that uses energy, as a byproduct of doing work. All such processes give off some waste heat as a fundamental result of the laws of thermodynamics. Waste heat has lower utility ...

from combustion. The engine came in two versions. The AL-34-1 was an engine that produced in cruise conditions. It weighed , which included a compact, recuperator. The AL-34-2 was a twin-configuration engine producing , weighing about , and using a common

gearbox A transmission (also called a gearbox) is a mechanical device invented by Louis Renault (who founded Renault) which uses a gear set—two or more gears working together—to change the speed, direction of rotation, or torque multiplication/r ...

in a single module. In October 2000, Saturn/Lyulka confirmed that it was still developing the AL-34 engine in the power range, and it was working with Kawasaki on stationary powerplant applications. The AL-34 would cost 200-240 thousand dollars, and it would require about 22 million dollars to complete development. As late as January 2004, the engine was still being proposed for the T-511 "AIST-M" derivative of the Krunichev T-411 Aist light utility aircraft. However, the AL-34 never entered production.

Specifications

References

Citations

Bibliography

Plot of takeoff SFC vs. takeoff shp for shaft engines, Vick, 2013
* {{Lyulka aeroengines Saturn aircraft engines