“Hafner A.R.III Gyroplane”的意思、由来-开放百科全书

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Hafner A.R.III Gyroplane

释义

Design and development
Variants
Specifications
See also
References
Notes Bibliography

name=A.R.III Gyroplane

image=Hafner1935.jpg

caption=Hafner AR.III at Heston, 1935

}}{{Infobox Aircraft Type

type=Experimental autogyro

national origin=United Kingdom

manufacturer=A.R.III Construction Company

designer=Raoul Hafner

first flight=Autumn 1935

introduced=

retired=

status=

primary user=

number built=1

developed from=

variants with their own articles=
}}

The Hafner A.R.III Gyroplane was a British 1930s experimental autogyro designed by Austrian Raoul Hafner, and built by the A.R.III Construction Company at Denham, Buckinghamshire.

Design and development

The single-seat Gyroplane had a three-blade auto-rotating rotor fitted above the fuselage on a strutted plyon. A {{convert|90|hp|kW|0|abbr=on}} Pobjoy Niagara radial piston engine was mounted on the fuselage nose. It had fixed tailwheel landing gear and the rear fuselage included a large dorsal fin to provide directional stability. An unusual feature was the control system which was equipped with spider-actuated cyclic and collective pitch control of the rotor blades; this mechanism, a variant of the swashplate-actuated rotor control, became a standard feature on helicopters. In 1935, the Gyroplane was manufactured at the Martin-Baker Aircraft Company's factory at Denham, Buckinghamshire. In autumn 1935, the Gyroplane, registered G-ADMV, first flew at Heston Aerodrome, piloted by V.H. Baker.^[1] On 6 February 1937, it flew at Hanworth Air Park, having been modified as the Mark 2 version. It was tested at Farnborough, and leased to the Royal Aircraft Establishment for research, but it was scrapped during the second world war. A two-seat A.R.IV and three-seat A.R.V were planned, but construction was stopped when Hafner was interned under Defence Regulation 18B.

Variants

A.R.III

Prototype single-seat autogyro powered by a Pobjoy Niagara radial piston engine.

A.R.IV

Experimental rotorcraft to meet Air Ministry Specification S.22/38. Powered by a 210hp de Havilland Gipsy Six II engine, construction was started by Short Brothers as the Fleet Spotter, but was stopped in May 1940 when Hafner was interned.

A.R.V

Experimental rotorcraft to meet Air Ministry Specification S.22/38. Powered by a 210hp de Havilland Gipsy Six II engine, construction was started by Short Brothers as the Night Shadower, but was stopped in May 1940 when Hafner was interned.

Specifications

{{aerospecs
|ref=British Civil Aircraft since 1919 Volume
|met or eng?=eng
|genhide=
|crew=one
|capacity=
|length m=5.44
|length ft=17
|length in=10
|rot number=1
|rot dia m=10.00
|rot dia ft=32
|rot dia in=10
|height m=
|height ft=
|height in=
|rot area sqm=
|rot area sqft=
|empty weight kg=290
|empty weight lb=640
|gross weight kg=408
|gross weight lb=900
|eng1 number=1
|eng1 type=Pobjoy Niagara
|eng1 kw=67
|eng1 hp=90
|eng2 number=
|eng2 type=
|perfhide=
|max speed kmh=
|max speed mph=120
|range km=
|range miles=
|endurance h=
|endurance min=
|ceiling m=
|ceiling ft=
|climb rate ms=
|climb rate ftmin=
}}

References

Notes

1. ^Flight, 19 September 1935, p. 318

Bibliography

{{cite book |last= |first= |authorlink= |coauthors= |title= The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|year= |publisher= Orbis Publishing|location= |issn=|pages=}}
{{cite book |last= Jackson|first= A.J.|authorlink= |coauthors= |title= British Civil Aircraft since 1919 Volume 2|year= 1973|publisher= Putnam|location= London|isbn=0-370-10010-7 }}

3 : British experimental aircraft 1930–1939|Single-engined tractor autogyro|Aircraft first flown in 1935

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