Hawker Cygnet

Cygnet
	Hawker Cygnet G-EBMB at RAF Museum, Cosford
Role	light competition aircraft
Manufacturer	Hawker Engineering Co.
Designer	Sydney Camm
First flight	1924
Number built	2

The Hawker Cygnet was a British ultralight

sesquiplane

aircraft of the 1920s.

Background

In 1924, the

Flying Officer

Ragg, taking first and second place respectively.

Design

The aircraft were of wood-and-fabric construction, the fuselage being four

Warren girder. The wing had two box spars with Warren truss ribs. Initially the two aircraft were powered, one by an Anzani, and the other by an ABC Scorpion (both opposed twin-cylinder engines). In 1926 the engines in both Cygnets were changed to the Bristol Cherub III

, another twin-cylinder engine. The airframe weighed a remarkably low 270 lb, and its weight when empty was only 373 lb.

Postwar history

G-EBMB was kept by Hawker in storage until 1946, when it was refurbished and reassembled at Hawker's Langley Aerodrome. It was later transferred to their new facility at

RAF Cosford in Shropshire, where it can now be seen.^[2] An airworthy replica is on display at the Shuttleworth Collection, Old Warden, Bedfordshire.^[3]

Specifications

Data from Hawker Aircraft since 1920 ^[1]

General characteristics

Crew: 2
Length: 20 ft 5 in (6.22 m)
Wingspan: 28 ft 0 in (8.53 m)
Width: 8 ft 0 in (2.44 m) (folded)
Height: 5 ft 10 in (1.78 m)
Wing area: 165 sq ft (15.3 m²)
Empty weight: 373 lb (169 kg)
Gross weight: 950 lb (431 kg)
Powerplant: 1 × Bristol Cherub III 2-cylinder piston engine, 34 hp (25 kW)

Performance

Maximum speed: 82 mph (132 km/h, 71 kn) at sea level
Service ceiling: 8,900 ft (2,700 m) (absolute ceiling)
Time to altitude: 11 min 20 s to 5,000 ft (1,500 m)

References

Notes

^ ^a ^b Mason 1991, p.111.
^ "Hawker Cygnet airplane pictures & aircraft photos – RAF Museums Archived 2008-07-06 at the Wayback Machine" RAF Museum. Retrieved 16 August 2008.
^ Aircraft: 1924-Hawker Cygnet Archived 12 February 2010 at the Wayback Machine. Shuttleworth Collection. Retrieved 16 August 2008.

Bibliography

Mason, Francis K. Hawker Aircraft since 1920. London:Putnam, 1991.
ISBN 0 85177 839 9
.

External links

Hawker Cygnet – British Aircraft Directory

[Mason_Hawker_p111-1] Mason 1991, p.111.

[2] "Hawker Cygnet airplane pictures & aircraft photos – RAF Museums Archived 2008-07-06 at the Wayback Machine" RAF Museum. Retrieved 16 August 2008.

[3] Aircraft: 1924-Hawker Cygnet Archived 12 February 2010 at the Wayback Machine. Shuttleworth Collection. Retrieved 16 August 2008.

[2]

[3]

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