AD Scout

The AD Scout (also known as the Sparrow) was designed by Harris Booth of the British Admiralty's Air Department as a fighter aircraft to defend Britain from Zeppelin bombers during World War I.[1]

AD Scout
Role Fighter
Manufacturer Air Department
Designer Harris Booth[1]
First flight 1915
Primary user Royal Naval Air Service - testing only
Number built 4[1]

Design and development

The Scout was a very unconventional aircraft – a biplane with a fuselage pod mounted on the upper wing. A twin-rudder tail was attached by four booms, and it was provided with an extremely narrow-track undercarriage. The primary armament was intended to be a 2-pounder recoilless Davis Gun, but this was never fitted.[1] Four prototypes were ordered in 1915 and two each were built by Hewlett & Blondeau and the Blackburn Aeroplane & Motor Company.

Operational history

Trials flown by pilots of the Royal Naval Air Service at Chingford proved the aircraft to be seriously overweight, fragile, sluggish, and difficult to handle, even on the ground. The project was abandoned and all four prototypes scrapped.[1]

Operators
 United Kingdom

Specifications (AD Scout)

Data from The British Fighter since 1912[2]

General characteristics

  • Crew: 1
  • Length: 22 ft 9 in (6.93 m)
  • Wingspan: 33 ft 5 in (10.19 m)
  • Height: 10 ft 3 in (3.12 m)
  • Powerplant: 1 × Gnome Monosoupape 9 Type B-2 9-cylinder air-cooled rotary piston engine, 100 hp (75 kW) [3]
  • Propellers: 2-bladed fixed-pitch propeller

Performance

  • Maximum speed: 84 mph (135 km/h, 73 kn) [4]
  • Range: 210 mi (340 km, 180 nmi)

Armament

  • Guns: 1x 2-pounder (40 mm) Davis recoilless gun (intended, but never fitted in view of the fragility of the Scout's construction)
gollark: I mean, 2^32 is actually within tractable computation range for modern computers (it's 2 billion or so, and my laptop can probably manage 8GIPS (giga-instructions per second) sequentially).
gollark: This is the problem - with ones which are too long they can't be really tested.
gollark: In decently general-purpose programming languages with access to more space, you can construct ridiculously large numbers by implementing ↑ and all that.
gollark: Not without extra imports or something. or maybe python2.
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References
Notes
  1. Jackson, Aubrey Joseph (16 March 1989). Blackburn Aircraft since 1909 (1st ed.). London: Putnam & Company Ltd. pp. 98–101. ISBN 0-85177-830-5.
    • Mason, Francis K. (1992). The British Fighter since 1912. Annapolis, USA: Putnam & Company Ltd. p. 42. ISBN 1-55750-082-7.
  3. Bruce, J.M. (1965). War Planes of the First World War: Volume One Fighters. London: Macdonald. p. 5.
    • Lewis, Peter (1979). The British Fighter since 1912 (4th ed.). London: Putnam & Company Ltd. pp. 392–393. ISBN 0-370-10049-2.
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