Ryan YO-51 Dragonfly
The YO-51 Dragonfly was a United States prototype observation aircraft built for the US Army by Ryan Aeronautical. Typical for aircraft of its type, it was a high-wing braced parasol wing monoplane with fixed tailwheel undercarriage, a two-seat open cockpit, and full-span slots and Fowler flaps for STOL capability.
At gross weight, the YO-51 could, without flaps, take off after a run of 400 feet, while with full flaps the take off run would be only 75 feet, or just four feet more than twice its own length.[1]
Three examples were purchased for evaluation against the Stinson YO-49 and Bellanca YO-50. The Stinson machine won the production contract and no further YO-50s were built.
Specifications
General characteristics
- Crew: two, pilot and observer
- Length: 35 ft 6 in (10.51 m)
- Wingspan: 52 ft 0 in (15.85 m)
- Gross weight: 4206 lb (1908 kg)
- Powerplant: 1 × Pratt & Whitney R-985-21 Wasp Junior radial, 440 hp (328 kW)
Performance
- Maximum speed: 129 mph (208 km/h)
- Cruise speed: 107 mph (172 km/h)
See also
- Aircraft of comparable role, configuration and era
- Related lists
References
- Notes
- ^ Fowler, Harlan Davey (1948). Fowler flaps for airplanes: an engineering handbook. Los Angeles: Wetzel Publishing Co.. p. 79.
- Bibliography
- Donald, David (1997). Complete Encyclopedia of World Aircraft. London: Orbis Publishing Ltd. pp. 794. ISBN 0-7607-0592-5.
- O-51 Dragonfly Info, "Dave's Warbirds"
External links
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