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Blackburn Bluebird
The Blackburn L.1 Bluebird was a British single-engine biplane light trainer/tourer with side by side seating built in small numbers by Blackburn Aircraft in the 1920s.
Contents
Design and development
The Bluebird L.1 was initially designed as a competitor in the light aircraft trials to be held at Lympne Aerodrome in September 1924 for a low-powered two-seater, fitted with a 67 in³ (1,100 cc) Blackburne Thrush three-cylinder radial engine[1]. The Bluebird was a wooden single-bay biplane, with folding wings and was fitted with a single side-by-side cockpit.
Although first flying in 1924[2], it was not finished in time to compete in the 1924 competition. It was realised that the machines that resulted from the 1923 and 1924 light aircraft trials were too low-powered for serious use, the Daily Mail sponsored a similar competition in September 1926, this time allowing the use of heavier and more powerful engines. The prototype Bluebird was then fitted with an Armstrong Siddeley Genet radial engine and dual controls for entry into the competition[1]. Interest in the Bluebird following the competition and its success in the 1926 Grosvenor Cup air race, which it won, resulted in Blackburn manufacturing a batch of 13 production aircraft, known as the L.1A Bluebird II, which were similar to the prototype, and a further seven modified L.1B Bluebird III[1]. The Bluebird formed the basis for the all-metal Blackburn Bluebird IV.
Operational history
The wooden Bluebirds were mainly used by flying clubs, and were heavily used, but several were quickly written off, with only three surviving for more than four years [1]. One Bluebird II was fitted with floats and another, the Bluebird III prototype, was fitted with a ADC Cirrus engine as a testbed for the Bluebird IV. The last wooden Bluebird was destroyed in a fire-fighting demonstration in 1937[1].
Variants
- L.1 Bluebird I
- Prototype. Originally powered by Blackburne Thrush engine, later re-fitted with Armstrong Siddeley Genet I radial engine and dual controls.
- L.1A Bluebird II
- Production. Powered by Genet II engine. 13 built.
- L.1.B Bluebird III
- Modified internal structure. One prototype and six production aircraft.
Operators
Specifications (Bluebird II, III)
Data from British Civil Aircraft since 1919, Volume 1 [1]
General characteristics
- Crew: Two
- Length: 22 ft 6 in (6.86 m)
- Wingspan: 28 ft 0 in (8.54 m)
- Height: 8 ft 4 in (2.54 m)
- Wing area: 237.5 ft² (22.1 m²)
- Empty weight: 793 lb (360 kg)
- Loaded weight: 1,385 lb (630 kg)
- Powerplant: 1× Armstrong Siddeley Genet II five cylinder radial, 80 hp (60 kW)
Performance
- Maximum speed: 77 kn (88 mph, 142 km/h)
- Cruise speed: 61 kn (70 mph, 113 km/h)
- Wing loading: 5.83 lb/ft² (28.5 kg/m²)
- Power/mass: 0.058 hp/lb (0.095kW/kg)
See also
Related development
Comparable aircraft
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Notes
References
- Jackson, A.J. (1974). British Civil Aircraft since 1919, Volume 1. London: Putnam. ISBN 0370100069.
- Taylor, M J H (Editor) (1989). Jane's Encyclopedia of Aviation. London: Studio Editions, p.157.
External links
Lists relating to aviation | |
|---|---|
| General | Timeline of aviation · Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines |
| Military | Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft |
| Notable incidents and accidents | Military aviation · Airliners · General aviation · Famous aviation-related deaths |
| Records | Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Blackburn Bluebird". |
