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Soyuz R179 and derivatives

TinWing

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The R79 turbofan is familiar to most aviation enthusiasts as the powerplant of the Yak-41 supersonic V/STOL fighter.

In the last 10 years, other lesser known derivatives have come to light. Most notably, the R179-300 is a limited thrust vectoring variant for conventional fighter aircraft, such as the proposed Su-37 canard delta project. Although the output of the R179 is comparable to current generation engines such as the AL-41 (or the American F119/F135 advanced turbofans) the R179 is a far heavier engine, with a higher bypass ratio, mass flow and a greater number of stages.

Sources:

http://www.hitechweb.genezis.eu/fightersOF03.htm
http://www.paralay.com

Link to the manufacuturer's page on the R179-300:

http://www.amntksoyuz.ru/sysdoc/?ClsLn=4&ClsId=19

A non-afterburning R79 derivative, the VK-21:

http://www.amntksoyuz.ru/sysdoc/?ClsLn=4&ClsId=25
 

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