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Westland Dreadnought

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Collection: British Experimental Aircraft 1920–1929, Single-Engined Tractor Aircraft, Westland Aircraft
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Westland Dreadnought

Dreadnought
Role Experimental monoplane
National origin United Kingdom
Manufacturer Westland Aircraft
First flight 1924
Retired 1924
Status Destroyed
Number built 1

The Westland Dreadnought was an experimental single-engined fixed-wing monoplane design for a mail plane created to trial the aerodynamic wing and fuselage design ideas of Woyevodsky. It was designed and built by British aircraft manufacturer Westland Aircraft for the Air Ministry. Only a single aircraft was ever built,[1] and it crashed on its initial flight, badly injuring the test pilot.

Contents

  • Design and development 1
  • Operational history 2
  • Specifications 3
  • See also 4
  • References 5
  • External links 6

Design and development

The Dreadnought was distinct for its futuristic design and method of construction, based on the theories of the Russian inventor N. Woyevodsky. After preliminary tests of the idea were tried in a wind tunnel and met with some degree of success, the design was given to Westland Aircraft to construct an aircraft. The design at the time was for a 70 ft wingspan twin-engine aircraft.

The design was aerodynamically advanced, featuring a continuous aerofoil section over all parts of the aircraft, including the fuselage and, unusually for British aircraft at that time, had no form of wing bracing.

Construction was all-metal, comprising drawn channeling with a skin of corrugated sheet panels. The method may be compared to the modern stressed skin construction.

Another advanced feature was the fail-safe ejection system.

Although conceived as a twin-engined type with retractable undercarriage, the design that emerged was fitted with a single 450 horsepower Napier Lion II 12 cylinder engine that allowed the Dreadnought speeds of up to 102 miles per hour.[1] and fixed undercarriage.[2]

Operational history

On completion of the Dreadnought, pilot Arthur Stewart Keep carried out taxi trials and short airborne hops. On 9 May 1924,[3] he took off for its first flight test. While the aircraft was initially stable, it soon became clear that Keep was losing control, and not long after, at a height of approximately one hundred feet, the Dreadnought stalled and crashed. Thrown from the aircraft,[4] Keep sustained severe injuries, and later had both legs amputated.[5] He remained with the company and did not retire until 1935.[6] After this failure, the Dreadnought design was abandoned, although the ideas that were conceived and used in its making were visibly an advancement in aircraft and are appreciated as such in the present day.

Specifications

Data from [7]

General characteristics
  • Crew: Two
  • Capacity: Eight passengers
  • Length: 56 ft 0 in (17.08 m)
  • Wingspan: 69 ft 6 in (21.19 m)
  • Height: 16 ft 4 in (4.98 m)
  • Wing area: 840 ft2 (78.1 m2)
  • Empty weight: 5,623 lb (2,556 kg)
  • Gross weight: 6,900[8] lb (3,136 kg)
  • Powerplant: 1 × Naper Lion II, 450 hp (336 kW)

Performance

  • Maximum speed: 102 mph (164 km/h)

See also

  • Junkers - earlier pioneer of several all-metal monoplane types with corrugated skin.
  • McDonnell XP-67 Bat - a later design with all-aerofoil profiles.

References

Notes
  1. ^ a b "Dreadnought." aviationarchive.org. Retrieved: 2 December 2008.
  2. ^ Lukins 1944
  3. ^ "Aircraft Data Sheet: Dreadnought (1924)." Westland Helicopters Ltd.. Retrieved: 2 December 2008.
  4. ^ Capt. Keep of " Westlands," Injured
  5. ^ "Captain A.S. Keep" Flight 2 January 1953 p11
  6. ^ Wings from the West
  7. ^ James 1991, p. 103.
  8. ^ Estimated.
Bibliography
  • "Design and Development of America's First Military Assistance Programme Fighter", Flight, 8 January 1960: 43 
  • James, Derek N. Westland Aircraft since 1915. London: Putnam, 1991. ISBN 0-85177-847-X.
  • Lukins, A.H. The Book of Westland Aircraft. Leicester, UK: Harborough, 1944.
  • Mondey, David. Westland: 2 Westland. Lonodn: Jane's, 1982. p. 17.

External links

  • A Chance Which Westland Missed Flight 1965
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