“Evans VP-2”的意思、由来-开放百科全书

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Evans VP-2

释义

Design and development
Operational history
Preserved examples
Specifications (60 hp engine)
References
Notes Bibliography
External links

name=VP-2

image=EvansVP2.jpg

caption=Evans VP-2 G-BTAZ preserved at the City of Norwich Aviation Museum in Norfolk, England

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type=Homebuilt aircraft

national origin=United States

manufacturer=

designer=William Samuel Evans

first flight=1971

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status=Plans available

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The Evans VP-2 is a development of the Evans VP-1 Volksplane, both of which were designed in La Jolla, California by aeronautical engineer William Samuel "Bud" Evans.^[1] Evans had formerly worked at Convair, Ryan Aircraft and General Dynamics. ^[2]{{TOC limit|limit=2}}

Design and development

Work on the design of the VP-1, was completed between 1966 and 1968, the intention being that the design would be simple to build for a novice working at home. The design was successful, and, following a first flight in September 1968, a large number of aircraft have been constructed by homebuilders. The aircraft are usually powered by converted Volkswagen air-cooled engines.^[3]

The VP-1 is a single-seat open-cockpit low-wing monoplane manufactured from Spruce and plywood with fabric covered wings. Performance is typically a cruise speed of {{convert|75|mph|km/h|0|abbr=on}} and a stall speed of {{convert|40|mph|km/h|0|abbr=on}}.^[2]

Following the success of the VP-1 a two-seat variant, the VP-2 was designed to meet normal category limits, which are 3.8 positive and 1.9 negative g. The first VP-2 (then known as VP II) flew in 1971.^[4]

The VP-2 is externally similar in appearance to the VP-1 but with a {{convert|1|ft|cm|0|abbr=on}} wider fuselage and enlarged cockpit section to accommodate two side-by-side configuration seats. The aircraft is {{convert|1|ft|cm|0|abbr=on}} longer and has a {{convert|3|ft|m|1|abbr=on}} addition to wingspan. The VP-2 can use any Volkswagen air-cooled engine model from 1,834 to 2,100 cc. Other similar powerplants can be substituted.^[6]

Operational history

Although numerous examples of the VP-2 were constructed from plans provided by the Evans Aircraft Company, the VP-2 is no longer being offered with the company having stopped marketing the VP-2 and responding to technical inquiries. The main concern from the company was that the VP-2 may have liability issues associated with two-seat aircraft. VP-2 plans and modified VP-2 plans remain available on the Internet, although the Evans Aircraft Company neither authorizes nor approves of these plans. ^[5]

Preserved examples

City of Norwich Aviation Museum, Norfolk, England

Specifications (60 hp engine)

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|wing area sqft=130
|airfoil=NACA 4415
|fuel capacity={{convert|14|USgal|litre}}
|empty weight kg=
|empty weight lb=640
|gross weight kg=
|gross weight lb=1040

|perfhide=
|max speed kmh=
|max speed mph=100
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|cruise speed mph=75
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|never exceed speed mph=120
|stall speed mph=40
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|climb rate ftmin=700
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References

Notes

1. ^Purdy 1998, p. 152.
2. ^¹"Plane and Pilot" 1977, p. 141.
3. ^Mooney, Walt. "Pilot report: Volksplane." Air Progress, March 1970, pp. 39, 42.
4. ^Davisson, Budd. "A plane for the common volks." Pilot Reports; Originally published in Air Progress, May 1974. Retrieved: September 4, 2017.
5. ^"Evans Aircraft Company frequently asked questions." Evans Aircraft Company, 2017. Retrieved: August 29, 2017.
6. ^¹Taylor 1982, p. 542.

Bibliography

"Plane and Pilot." 1978 Aircraft Directory. Santa Monica California: Werner & Werner Corp.,.1977. {{ISBN|0-918312-00-0}}.
Purdy, Don: AeroCrafter – Homebuilt Aircraft Sourcebook, Fifth Edition. Chatswood, New South Wales, Australia: BAI Communications, 1998. {{ISBN|0-9636409-4-1}}.
Taylor, John W. R. Jane's All The World's Aircraft 1982–83. London: Jane's Yearbooks, 1982. {{ISBN|0-7106-0748-2}}.

External links

"Evans VP-1 Volksplane history."

5 : United States sport aircraft 1960–1969|Low-wing aircraft|Single-engined tractor aircraft|Evans aircraft|Aircraft first flown in 1971

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