Ivchenko AI-14
The Ivchenko AI-14 ( Russian Ивченко АИ-14 ) is a Soviet aircraft engine . The abbreviation AI refers to the then head of the design office of the same name, Alexander Ivchenko , who was responsible for the development of the engine. The successor is the Wedenejew M-14 .
Development and construction
The AI-14, which was used in 1950, is an air-cooled four-stroke nine- cylinder radial engine with a carburetor and charger . He appeared in several versions for use in both airplanes and helicopters. In Poland and the ČSSR - there as M-462 - a license production took place.
A planetary gear with spur gears for reduction (0.309) and variable pitch up to the sail position serves as propeller drive with the designations IR-14R and RF with normally two-bladed propeller . The speed controller required for this is attached to the front; on the back there are two ignition magnets, the fuel pump, the charger, the generator, the gear oil pump, the compressed air distributor required for starting and the speed sensor. Each cylinder has two spark plugs. For use in agricultural aircraft , a coupling is also installed on the rear, with which, for example, the blower wheel system for spreading powdery fertilizers can be put into operation. The intermediate overtaking time of the AI-14RF was given as 800 hours at the end of 1969.
When used in helicopters as AI-14W or WF, an axial fan takes over the forced cooling at the low speeds typical for rotary wing aircraft, air baffles ensure an even flow around the cylinders. The gear used in this version with a reduction of 0.309 also serves to change the drive direction at an angle of 90 ° from the crankshaft to the rotor shaft . The mechanically driven charger is switched on automatically when the starting power is reached.
commitment
The engine came and is still used today in various types of fixed-wing aircraft . These were or are essentially the An-14 , the Jak-12 and the versions A, P, PM and T of the Jak-18 . The Polish or Czechoslovak license version was and is used in the PZL-101 Gawron , the PZL-104 Wilga , the L-60 Brigadýr and the Z-37 Čmelák . The helicopter variant was used in the Kamow types Ka-15 and Ka-18 .
Technical specifications
| Parameter | Ivchenko AI-14RF | Ivchenko AI-14WF |
|---|---|---|
| drilling | 105 mm | |
| Hub | 130 mm | |
| diameter | 1260 mm | |
| Displacement | 10.16 l | |
| diameter | 985 mm | |
| length | 1107 mm (with clutch in the agricultural version ) |
1072 mm (with fan) |
| Dry matter | 225 kg (with clutch in the agricultural version) |
238 kg |
| Starting power | 300 hp (221 kW) at 2400 rpm | 280 hp (206 kW) at 2450 rpm |
| High performance | 285 hp (210 kW) at 2300 rpm | k. A. |
| Continuous output | 250 hp (184 kW) at 2050 rpm | 235 hp (173 kW) at 2130 rpm |
| Travel service | 150 PS (110 kW) at 1730 rpm (60%) 183 PS (135 kW) at 1860 rpm (75%) |
120 PS (88 kW) at 2000 rpm (60%) 160 PS (118 kW) at 2000 rpm (75%) |
| Fuel consumption | 205-290 g / PSh | 210-280 g / PSh |
| Octane number | 98 | 78 |
literature
- Heinz A. F. Schmidt: Aircraft engines of socialist countries . In: Flieger-Jahrbuch 1971 . Transpress , Berlin 1970, p. 107/108 .
