Soloviev D-25 Explained

The Soloviev D-25V is a Soviet gas-turbine turboshaft engine for use in large helicopters. Designed and originally manufactured by the Soloviev Design Bureau the engine has been in production since May 1960. The power unit consists of two engines coupled to a gearbox weighing 3,200 kg (7,050 lb).

The V in the designation means vertoletny (Russian: <u>В</u>ертолетный), for helicopters.

Variants

D-25V:Standard helicopter use production engines

D-25VF:Additional compressor zero-stage, power output 6500abbr=onNaNabbr=on

D-25VK:A combined propeller and shaft output engine for the Kamov Ka-22 developing 5500abbr=onNaNabbr=on

Applications

• Mi-6 helicopter
• Mi-10 helicopter
• Mi-10K "flying crane" helicopter
• Mi-12 helicopter
• Kamov Ka-22 compound helicopter
• Yakovlev Yak-60 heavy lift helicopter (concept cancelled during design stage)

Further reading

• Book: Gunston, Bill . World Encyclopaedia of Aero Engines . 1989 . Patrick Stephens Limited . Cambridge, England . 978-1-85260-163-8 . 2nd . 164.
• Book: Jane's all the World's Aircraft 1972–73 . Taylor . John W.R. . 1972 . Sampson Low, Marston & Co. Ltd . London . 978-0-354-00109-0 . 752.

External links

• D-25V description and photos at the manufacturer's site