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Descamps 27

释义

Design and development
Specifications
References

name=Descamps 27

image=

caption=

}}{{Infobox Aircraft Type

type=Single seat fighter

national origin=France

manufacturer=Voisin ??

designer=E.A. Descamps

first flight=Spring 1919

number built=1

developed from=

variants with their own articles=
}}

The Descamps 27 C1 was a single seat biplane fighter aircraft, built in France in 1919. It was unusual in having a forward swept lower wing. After competitive trials, the Nieuport 29 was chosen for production, so only one Descamps was built.

Design and development

The Descamps 27 was a two bay biplane. Its upper and lower wings had the same constant chord and the same spans when the overhangs of the balanced ailerons, fitted only to the lower wing, were included. There was forward stagger, so each pair of parallel interplane struts leant forward. The upper wing was unswept but the lower wing had about 7° of forward sweep to improve the pilot's forward and downwards field of view. As a result, the inner interplane strut pairs leant forward more strongly. Short cabane struts held the centre of the upper wing a little above the fuselage; the pilot's open cockpit was under the trailing edge, where there was a shallow cut-out to improve his upward view.

The fighter was powered by a {{convert|300|hp|kW|abbr=on|order=flip}} Hispano-Suiza 8Fb water-cooled V-8 engine in a round-profiled nose with a large, domed spinner. A pair of forward firing, synchronised {{convert|7.7|mm|in|abbr=on|3}} machine guns were within the cowling above the engine. Behind the engine the fuselage was flat sided, though with rounded top and bottom. A shallow rectangular radiator was fixed against the fuselage on either side of the cockpit. The Descamps' tailplane, which was mounted on top of the fuselage, was small compared with the balanced elevators; together they shared a semi-circular leading edge and a swept trailing edge. The fin was also relatively small compared with the rudder, which was rounded, deep and extended to the keel; it operated in an elevator cut-out.

The landing gear of the Descamps 27 was of the conventional tailskid type. Its mainwheels were on a single axle and fixed to the lower fuselage by a pair of V-form struts.

The Descamps 27 performed well in government comparative trials of it and other single seat fighters but the Nieuport 29 was preferred and went into production. Development of the Descamps machine ended and only one was built.

Specifications

{{Aircraft specs
|ref=Green and Swanborough (1994) p.175
|prime units?=met

|perfhide=
|max speed kmh=230
|max speed note=at sea level, {{convert|172|km/h|mph|abbr=on}} at {{convert|7000|m|ft|abbr=on}}
|cruise speed kmh=
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|minimum control speed kmh=
|minimum control speed mph=
|minimum control speed kts=
|minimum control speed note=
|range km=
|range miles=
|range nmi=
|range note=
|combat range km=
|combat range miles=
|combat range nmi=
|combat range note=
|ferry range km=
|ferry range miles=
|ferry range nmi=
|ferry range note=
|endurance=2 hr
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=4.76 min to {{convert|2000|m|ft|abbr=on}}
|sink rate ms=
|sink rate ftmin=
|sink rate note=
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=
|wing loading note=
|disk loading kg/m2=
|disk loading lb/sqft=
|disk loading note=
|fuel consumption kg/km=
|fuel consumption lb/mi=
|power/mass=
|more performance=

|armament=

2× fixed, forward firing, synchronised {{convert|7.7|mm|in|abbr=on|3}} machine guns

}}

References

}}

1 : French fighter aircraft 1910–1919

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