Soloviev D-25
| D-25V | |
|---|---|
| |
| Type | Turboshaft |
| Manufacturer | Soloviev Design Bureau
|
| First run | 1954 |
| Major applications | Mil Mi-6. |
The Soloviev D-25V is a Soviet gas-turbine
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: Вертолетный), for helicopters.
Variants
- D-25V
- Standard helicopter use production engines
- D-25VF
- Additional compressor zero-stage, power output 6,500 hp (4,847 kW)
- D-25VK
- A combined propeller and shaft output engine for the Kamov Ka-22 developing 5,500 hp (4,101 kW)
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)
Specifications (D-25V)
Data from Aircraft engines of the World 1970.[1]
General characteristics
- Type: Free-turbine single-shaft turboshaft engine
- Length: 2,737 mm (107.8 in)
- Diameter: 508 mm (20.0 in) (casing)
- Width: 1,086 mm (42.8 in)
- Height: 1,158 mm (45.6 in)
- Frontal area: 0.2 m2 (2.2 sq ft)
- Dry weight: 1,200 kg (2,600 lb)
Components
- Compressor: Nine-stage axial flow
- Combustors: 12-chamber cannular
- Turbine: Single-stage compressor turbine, two-stage free power turbine
- Fuel type: Aviation kerosene based fuels, such as Jet A-1, JP-4
- Oil system: Pressure spray at 4.7 bar (68 psi) with return
Performance
- Maximum power output:
- Take-off power: 5,500 shp (4,100 kW) (equivalent) sea level to 3,000 m (9,800 ft) at 8,300 free power turbine rpm
- Cruising power: 4,700 shp (3,500 kW) (equivalent) at 3,000 m (9,800 ft) at 8,300 free power turbine rpm
- Overall pressure ratio: 5.6:1
- Air mass flow: 58 lb/s (26 kg/s) at 9,950 rpm
- Turbine inlet temperature: 1,103 K (1,526 °F; 830 °C)
- Specific fuel consumption: 0.639 lb/shp/h (0.1080 kg/kW/ks) (equivalent)
- Power-to-weight ratio: 3.42 kW/kg (2.08 shp/lb)
See also
Comparable engines
Related lists
References
- ^ Wilkinson, Paul H. (1970). Aircraft engines of the World 1970 (22nd ed.). London: Paul H. Wilkinson. p. 223.
Further reading
- Gunston, Bill (1989). World Encyclopaedia of Aero Engines (2nd ed.). Cambridge, England: Patrick Stephens Limited. p. 164. ISBN 978-1-85260-163-8.
- Taylor, John W.R., ed. (1972). Jane's all the World's Aircraft 1972–73. London: Sampson Low, Marston & Co. Ltd. p. 752. ISBN 978-0-354-00109-0.
External links
Wikimedia Commons has media related to Soloviev D-25.