YO-51 蜻蜓聯絡機(英語:Dragonfly)是一款由雷恩航空公司為美國陸軍航空兵團設計和的觀察機。它是一款單引擎傘翼單翼飛機,專為最佳短距起降能力而設計。儘管三架原型機在測試性能非常優秀,但由於O-49更優秀的性能,因此該機並未被採納。
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YO-51
YO-51 蜻蜓採用同類飛機的典型設計,並針對觀察和聯絡功能進行優化,使其能在各種場地起落。ref>Penfield 1941, p.31.</ref>蜻蜓是一款高翼支撐遮陽傘單翼飛機,配有固定尾輪起落架、兩座開放式駕駛艙、全跨度插槽和用於短距起降能力的福勒襟翼。[2]
YO-51在沒有襟翼的情況下可以在400feet距離內起飛,而在全襟翼的情況下,起飛距離僅為75feet。[3]蜻蜓能夠以低至30miles(48 km/h)的速度保持水平飛行,[4] 並據稱能夠在比飛機本身長度更短的距離內著陸。[5]
該機綽號「飛行摩托車」(英語:flying motorcycle)[6],美國陸軍航空兵團購買了三架YO-51並與O-49和O-50一起評估。[7]YO-51是評估的三款中最重的。[8]
儘管蜻蜓在俄亥俄州賴特機場進行的飛行測試[9]表現亮眼,[10]但O-49最終贏得合約,而O-51也就此被放棄了。[11]
- 註記
Foottit, H. R. The Fowler Flap. Flying and Popular Aviation (Chicago: Ziff-Davis Publishing Co.). February 1942, 30 (2): 71.
Wilson, Gill Robb. Genealogy of American Aircraft. Flying (Chicago: Ziff-Davis Publishing Co.). July 1954, 55 (1): 23.
U. S. Army's "Flying Motorcycle". The Boston Globe (Boston, MA). May 25, 1941: C1.
The Dragonfly---Army's Newest Observation Plane. The Milwaukee Sentinel (Milwaukee, WI). February 23, 1940: 2.
- 書目
- Adcock, Al. US Liaison Aircraft in action. Aircraft in Action 195. Carrollton, TX: Squadron/Signal Publications. 2005. ISBN 978-0897474870.
- Donald, David. Complete Encyclopedia of World Aircraft. London: Orbis Publishing Ltd. 1997. ISBN 0760705925.
- Fowler, Harlan Davey. Fowler Flaps for Airplanes: An engineering handbook. Los Angeles: Wetzel Publishing Co. 1948. ASIN B0007EA17Q.
- Merriam, Ray (编). World War II Journal #15: U.S. Military Aircraft of World War II. Bennington, VT: Merriam Press. 2002. ISBN 1576381676.
- Pattillo, Donald M. Pushing the Envelope: The American Aircraft Industry. Ann Arbor, MI: University of Michigan Press. 2001. ISBN 978-0472086719.
- Penfield, Thomas. Wings for America: Fighting Planes of the U. S. A.. Chicago: Rand McNally & Co. 1941. ASIN B004BVUSC4.
- Rowe, Frank Joseph. The Helio Courier Ultra C/stol Aircraft: An Illustrated Developmental History. Jefferson, NC: McFarland & Company. 2006. ISBN 978-0786422890.