Yakovlev Yak-100
Yak-100 | |
---|---|
Role | Transport helicopter |
Designer | Yakovlev |
First flight | November 1948 |
Status | Project cancelled |
Produced | Moscow Plant No. 115 |
Number built | 2 |
The Yakovlev Yak-100 was a single-engine transport helicopter developed in the USSR in 1948. This was the Yakovlev Design Bureau's second helicopter.
Design and development
The Yak-100 (initially designated Yak-22) was developed in direct competition with Mikhail Mil's Mi-1. Bearing a striking resemblance to the Sikorsky H-5, the Yak-100 had a conventional main and anti-torque rotor configuration driven by an Ivchenko AI-26GRFL radial piston engine. The pilot and crewman/passenger sat under a long greenhouse-style canopy with very good visibility.[1]
Flight trials progressed quickly, with the almost ubiquitous vibration being tackled by moving the
Although successful in trials, the Yak-100 was not put into production because the equally successful Mi-1 had already been prepared for production before the Yak-100 had completed acceptance trials. The second prototype had three seats as well as other minor improvements.[1]
Specifications (Yak-100)
Data from OKB Yakovlev[1]
General characteristics
- Crew: 2
- Capacity: + 3rd seat in second prototype
- Length: 13.91 m (45 ft 8 in)
- Empty weight: 1,690 kg (3,726 lb) first prototype; 1,805 kg (3,979 lb) second prototype
- Max takeoff weight: 2,090 kg (4,608 lb) first prototype; 2,180 kg (4,810 lb) second prototype
- Powerplant: 1 × Ivchenko AI-26GRFL, 313 kW (420 hp)
- Main rotor diameter: 14.5 m (47 ft 7 in)
Performance
- Maximum speed: 170 km/h (110 mph, 92 kn)
- Range: 325 km (202 mi, 175 nmi)
- Service ceiling: 5,250 m (17,220 ft) *Hovering ceiling: 2,720 m (8,920 ft)
See also
Aircraft of comparable role, configuration, and era
- Sikorsky H-5
- Bristol Sycamore
- Weir W.9
- Bell 48
References
- ^ ISBN 1-85780-203-9.
Further reading
- Gordon, Yefim; Gunston, Bill (1997). Yakovlev aircraft since 1924 (1st ed.). London: Putnam. p. 126. ISBN 0851778720.