General Aircraft Monospar ST-25
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| Monospar ST-25 | |
|---|---|
| Type | |
| Manufacturer | General Aircraft Ltd, Hanworth |
| Maiden flight | 19 June 1935 |
| Number built | 60 |
The General Aircraft Monospar ST-25 was a small British twin-engine civil aircraft of the 1930s.
Contents |
[edit] Design and development
The ST-25 was a low wing cantilever monoplane with a fabric covered metal structure. The monospar name came from the use of a single spar in the wing structure which had been developed by H J Stieger. The cabin was enclosed with five seats.
The last surviving Monospar, ZK-AFF of Peit Van Asch's New Zealand Aerial Mapping was lost in 1986 as a result of a hangar fire. [1]
[edit] GAL.41
The GAL.41 was an experimental aircraft based on the Monospar ST-25 Universal. A new fuselage was built containing a pressurized section with two seats. The GAL.41 was to test possible presuurization systems for their proposed airliner, the GAL.40. The GAL.41 flew for the first time 11 May 1939 and was grounded in 1941.[2]
[edit] Variants
- ST-25 Jubilee
30 built
- ST-25 De Luxe
1 built by converting a Jubilee
- ST-25 Universal
From 1937 Twin fin and twin rudder. 29 built including the conversion of the De Luxe.
[edit] Operators
- New Zealand Aerial Mapping
- Royal New Zealand Air Force
- Spanish Republic Air Force
[edit] Specifications (Jubilee)
General characteristics
- Crew: 1
- Length: 26 ft 4 in ()
- Wingspan: 40 ft 2 in ()
- Height: 7 ft 10 in ()
- Wing area: 217 sq ft ()
- Empty weight: 1,680 lb ()
- Loaded weight: 2,875 lb ()
- Powerplant: 2× Pobjoy Niagara II radial engine, 90 hp () each
Performance
- Maximum speed: 142 mph
- Range: 585 miles ()
- Service ceiling 16,000 ft ()
- Rate of climb: 800 ft/min ()
[edit] References
- ^ NZ Aerial Mapping
- ^ http://www.jaapteeuwen.com/ww2aircraft/html%20pages/GENERAL%20AIRCRAFT%20GAL41.htm British Aircraft of WW2 accessed 17 July 2007]
[edit] See also
Related development General Aircraft GAL.41
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