Engineering:General Aircraft GAL.55
| General Aircraft GAL.55 | |
|---|---|
| Role | Training Glider |
| National origin | United Kingdom |
| Manufacturer | General Aircraft Limited |
| First flight | 1943 |
| Number built | 2 |
The General Aircraft GAL.55 was a 1940s United Kingdom military training glider designed and built by General Aircraft Limited.[1]
Development
The GAL.55 was a two-seat training glider to meet Air Ministry Specification TX.3/43,[1] and was selected ahead of the Airspeed AS.54, with the British Air Ministry ordering three prototypes.[2] The requirement called for a glider for basic and advanced training transport of glider pilots.[2] T1he GAL.55 was a mid-wing monoplane of mixed construction, with a plywood-covered steel tube fuselage and spruce and plywood wings. Pilot and instructor sat side-by-side under an enclosed canopy, and were provided with full dual controls. The aircraft was fitted with a fixed tricycle landing gear and had split trailing edge flaps and dive brakes.[1][3]
Two gliders were built, with the first prototype making its maiden flight late in 1943 from Hanworth.[1][4] Formal handling and performance trials at the Airborne Forces Experimental Establishment (AAEE) at RAF Beaulieu did not begin until November 1945. The type had light and sensitive controls, but had poor stability when being towed, and had much steeper gliding angles than the Horsa that the GAL.55 would train pilots for. The AAEE concluded that the GAL.55 was unsuitable as a trainer for contemporary troop- and cargo-carrying gliders.[5] By the time these tests had been completed, in July 1946, there was no longer a requirement to train large numbers of glider pilots, so no effort was made to resolve the GAL.55's problems, and no production followed.[6]
Specifications
Data from Ellison 1971, p. 127
General characteristics
- Crew: 2
- Length: 25 ft 6 1⁄2 in (7.785 m)
- Wingspan: 35 ft 1 1⁄2 in (10.706 m)
- Wing area: 182 sq ft (16.9 m2)
- Aspect ratio: 6.8
- Empty weight: 1,650 lb (748 kg)
- Gross weight: 2,350 lb (1,066 kg)
Performance
- Maximum speed: 225 mph (362 km/h, 196 kn)
- Stall speed: 54 mph (87 km/h, 47 kn) [6]
See also
Related lists
References
Notes
- ↑ 1.0 1.1 1.2 1.3 Ken Mason (February 2005). "GAL - industry innovator (Part 2)". Aviation News 67 (2): 136.
- ↑ 2.0 2.1 Jarrett 1991, p. 398
- ↑ Jarrett 1991, pp. 398–399
- ↑ Jarrett 1991, p. 399
- ↑ Jarrett 1991, pp. 399–400
- ↑ 6.0 6.1 Jarrett 1991, p. 401
Bibliography
- Ellison, Norman (1971). British Gliders and Sailplanes. London: A & C Black Ltd. ISBN 978-0-7136-1189-2.
- Jarrett, Philip (July 1991). "Nothing Ventured...No 16". Aeroplane Monthly 19 (7): 398–401. ISSN 0143-7240.
 |  |
