| 词条 | Oldershaw O-3 | |||||||||||||||||||
| 释义 |
The Oldershaw O-3 is an American high-wing, single seat, V-tailed glider that was designed by Vernon Oldershaw. Two examples were constructed as gliders and then both were later converted to motor gliders.[1][2] Design and developmentThe O-3 was designed by Oldershaw as an improved version of the O-2 to complete in the FAI Open Class. As such it had longer and higher aspect ratio wings of {{convert|54|ft|m|1|abbr=on}} span.[1][2] The O-3 is constructed of wood, with the nose made from fibreglass. Its wing employs a Wortmann 61-184 airfoil at the wing root, with a Wortmann 60-126 at the wing tip. The wing is equipped with trailing edge dive brakes. The landing gear is a retractable monowheel.[1][2][3] Both aircraft were constructed as pure gliders and then later motorized with the addition of a twin-cylinder, in-line Yamaha snowmobile engine. The engine is mounted behind the wing spar on a pylon that retracts forward into a bay closed by two doors. The power is transmitted through a belt-drive to a two-bladed propeller. The pylon can be deployed in eight seconds and uses the electric motor from a Ford Thunderbird window winder. The Yamaha powerplant gives a take-off roll of {{convert|1000|ft|m|0|abbr=on}} at an elevation of {{convert|500|ft|m|0|abbr=on}} and produces a climb rate of {{convert|350|ft/min|m/s|1|abbr=on}}.[1][2] Operational historyThe first O-3 was flown by Oldershaw in several US National contests and Oldershaw completed his distance diamond in the aircraft with a flight of {{convert|431|mi|km|0|abbr=on}}.[2] Oldershaw's O-3 was listed by the Federal Aviation Administration as destroyed and removed from the register in July 1999. The US Southwest Soaring Museum lists it as being part of their collection.[4][5] O-3 serial number 2 was built by Carlton Kibler of Porterville, California and officially registered as a Fry-Kibler O3A Renigade in 1979. In May 2011 the aircraft was still on the FAA registry.[2][6] Aircraft on display
Specifications (O-3){{Aircraft specs|ref=Sailplane Directory and Soaring[1][2] |prime units?=imp
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}} References1. ^1 2 3 4 {{Cite web|url = http://www.sailplanedirectory.com/PlaneDetails.cfm?PlaneID=251|title = O-3 Oldershaw |accessdate = 26 May 2011|last = Activate Media|authorlink = |year = 2006}} 2. ^1 2 3 4 5 6 Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 51. Soaring Society of America November 1983. USPS 499-920 3. ^{{Cite web|url = http://www.ae.illinois.edu/m-selig/ads/aircraft.html|title = The Incomplete Guide to Airfoil Usage |accessdate = 26 May 2011|last = Lednicer |first = David |authorlink = |year = 2010}} 4. ^1 {{cite web|url = http://swsoaringmuseum.org/collection.htm|title = Sailplanes, Hang Gliders & Motor Gliders|accessdate = 26 May 2011|last = US Southwest Soaring Museum |authorlink = |year = 2010}} 5. ^{{Cite web|url = http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=2560B|title = Make / Model Inquiry Results|accessdate = 26 May 2011|last = Federal Aviation Administration|authorlink = |date=May 2011}} 6. ^{{Cite web|url = http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=25888|title = Make / Model Inquiry Results|accessdate = 26 May 2011|last = Federal Aviation Administration|authorlink = |date=May 2011}} External links
2 : United States sailplanes 1960–1969|Homebuilt aircraft |
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