Henderson-Glenny Gadfly
| H.S.F.II Gadfly | |
|---|---|
| Role | Single-seat monoplane |
| National origin | United Kingdom |
| Manufacturer | Glenny and Henderson Limited |
| Designer | K.N. Pearson |
| First flight | 1929 |
| Retired | 1934 |
| Number built | 3 |
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The Henderson-Glenny H.S.F.II Gadfly was a British single-seat low-wing monoplane designed by K.N. Pearson and built by Glenny and Henderson Limited at Byfleet, Surrey, England in 1929.[1]
Design and development
The Gadfly was a low-wing monoplane with a fixed conventional landing gear and an open single seat cockpit.[1] The first aircraft, powered by an 35 hp (26 kW) ABC Scorpion II engine, first flew at Brooklands in April 1929.[1] It was designated the Gadfly I and was registered G-AAEY.[2] It was fitted with Pearson rotary ailerons and re-designated Gadfly II when it achieved a world altitude record of 3,021 m (9,911 ft) in the 200kg class on 16 May 1929 piloted by G.L.P. Henderson.[1]
The second aircraft was a Gadfly II G-AARJ[3] which first flew in August 1929 and was exported to Canada, where it was damaged beyond repair at Kitchener, Ontario, on 25 August 1931.[1] The final aircraft was Gadfly III G-AARK[4] which was the same as the Gadfly II but fitted with a 40 hp (30 kW) Salmson A.D.9 radial engine.[1] It was withdrawn from use in 1930.[1] The first aircraft G-AAEY was last based at Wolverhampton when it was scrapped in June 1934.[1]
Variants
- Gadfly I
- ABC Scorpion II powered, one built later converted to Gadfly II.[1]
- Gadfly II
- Same as Gadfly II but fitted with Pearson rotary ailerons, one conversion and one built.[1]
- Gadfly III
- Salmson A.D.9 radial-engine-powered, one built.[1]
Specifications (Gadfly II)
Data from [1]
General characteristics
- Crew: 1
- Length: 17 ft 10 in (5.44 m)
- Wingspan: 25 ft 10 in (7.87 m)
- Empty weight: 455 lb (206 kg)
- Gross weight: 750 lb (340 kg)
- Powerplant: 1 × ABC Scorpion II , 35 hp (26 kW)
Performance
- Cruise speed: 72 mph (63 kn; 116 km/h)
- Range: 350 mi (304 nmi; 563 km)
References
Notes
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 Jackson 1974, p. 251
- ↑ "Registration Document - G-AAEY" (PDF). Civil Aviation Authority. Retrieved 2009-11-15.
- ↑ "Registration Document - G-AARJ" (PDF). Civil Aviation Authority. Retrieved 2009-11-15.
- ↑ "Registration Document - G-AARK" (PDF). Civil Aviation Authority. Retrieved 2009-11-15.
Bibliography
- Jackson, A.J. (1974). British Civil Aircraft since 1919 Volume 3. London: Putnam. ISBN 0-370-10014-X.
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