Doak VZ-4
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| Doak VZ-4 | |
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| Type | VTOL research convertiplane |
| Manufacturer | Doak Aircraft Company |
| Maiden flight | 1958 in aviation |
| Primary user | United States Army |
| Number built | 1 |
The Doak VZ-4 (or Doak Model 16) was an American prototype VTOL aircraft built in the 1950s for service in the United States Army. It was originally powered by an 840 shp Lycoming YT53 turboprop engine. It was replaced with a 1000 shp Lycoming T53-L-1 turbine. [1] The turbine engine is mounted in the fuselage driving two ducted fan propellers.
Only one aircraft was produced. Given serial number 56-9642, it is on display at the U.S. Army Transportation Museum located at Fort Eustis, VA.
[edit] Operators
[edit] Specifications
Data from The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1454
General characteristics
- Crew: 2
- Length: 32 ft 0 in (9.75 m)
- Wingspan: 25 ft 6 in (7.77 m)
- Height: 10 ft 0 in (3.05 m)
- Wing area: 96 ft² (8.92 m²)
- Empty weight: 2,300 lb (1043 kg)
- Gross weight: 3,200 lb (1451 kg)
- Powerplant: 1 × Avco Lycoming YT-53 turboshaft, 840 hp (626 kW)
Performance
- Maximum speed: 230 mph (370 km/h)
- Range: 230 miles (270 km)
- Service ceiling: 6000 ft (1830 m)
Related lists
[edit] References
- ^ Harding, Stephen U.S. Army Aircraft Since 1947, Airlife Publishing, Ltd. 1990. ISBN 1-85310-102-8
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1454
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