Yakovlev Yak-44
| Yakovlev Yak-44E | |
|---|---|
| Type: | DRLO - scout |
| Design country: | |
| Manufacturer: | |
| First flight: |
not happened |
| Number of pieces: |
1 prototype (unfinished) |
The Jakowlew Jak-44 ( Russian Яковлев Як-44 ) was the project of a Soviet early warning aircraft .
development
In the eighties, was in the Soviet Union a new class of the project 1143.7 aircraft carriers for the Soviet Navy , which never consummate zero ship the Ulyanovsk was. In addition to high-performance fighters , tactical early warning aircraft comparable to the American E-2 Hawkeye were to be stationed on these new carriers .
For this purpose, OKB Jakowlew received the order in 1979 to design a high -wing aircraft designed as the Jak-44E. Since the air force expressed interest, two parallel designs for a carrier and a land-based version were worked out. Either the E-700 or a complex called a flare (Факел) was available as a radar system . In March 1980 the management of the OKB decided to use the latter. In the early project phase, it was planned to equip it with four additional lifting engines, with the help of which the distance should be limited to 150 to 200 meters from the carrier in the event of a springboard start. However, this variant was abandoned in March 1983 because it required too much additional space. Instead, work began on a new Jak-44E version in October 1984. The lift engines is now accounted for by the use of stronger D-27 - propeller turbines , each with 14,000 horsepower (10,297 kW), the two counter-rotating propellers (front Eight leaves, rear six-blade) drives. The torch system was also discarded and the installation of the E-700 system was planned. Its antenna was to be housed in a crown wheel above the fuselage, which was designed to be lowerable for better accommodation on aircraft carriers.
A 1: 1 dummy was built. In order to be able to simulate the accommodation under operational conditions, she was brought on board the Admiral Kuznetsov for appropriate tests . In September 1988 the development work was completed and in January 1989 the OKB received instructions from the Council of Ministers to build a land-based and an on-board version, both of which were to be equipped with D-27 drives and the E-700 system. Production began in June 1989 at the Tashkent plant , including the construction of another 1: 5 scale dummy. However, the location was only intended for final production; the individual components were to be manufactured in other production facilities. In 1990 construction of the first prototype began. The cockpit and the middle fuselage section were delivered from OKB's own Moscow test plant, the front fuselage segment and the radome came from Ulyanovsk and the wings from Ulan-Ude .
After the collapse of the Soviet Union , the completion of the prototype was slowed down considerably by cuts in financial resources, and work on the Yak-44E was finally stopped after the Ulyanovsk construction freeze . The Kamow Ka-31 early warning helicopter was developed as a cheaper compromise solution for the fleet .
Technical data (estimate)
| Parameter | Data |
|---|---|
| crew | 6th |
| length | 20.5 m |
| span | 25.7 m |
| height | 5.8 m |
| Wing area | 88.0 m² |
| Takeoff mass | 40,000 kg |
| Engines | 2 × Ivchenko Progress D-27 |
| power | 14,000 PS (10,297 kW) each |
| Top speed | maximum 740 km / h |
| Marching speed | 700 km / h 500–650 km / h on patrol |
| Landing speed | 185 km / h |
| Summit height | practically 13,000 m |
| Patrol altitude | 3,000-11,000 m |
| Range | 4,000 km |
| Flight duration | 3.6-6.5 h |
literature
- Dieter Stammer: AWACS aircraft in the Soviet-Russian armed forces . Elbe-Dnjepr, Klitzschen 2009, ISBN 978-3-940541-30-7 .
- Bill Gunston: Yakovlev Aircraft since 1924 . Putnam Aeronautical Books, London, UK 1997, ISBN 1-55750-978-6 (English).
- Tomasz Szulc: Rosyjskie taktyczne AWACSy . In: Nowa Technika Wojskowa . No. 5 , 1997, ISSN 1230-1655 , pp. 38-43 (Polish).
