DH.90 Dragonfly
De Havilland DH90 Dragonfly.jpg
Former Anglo European Airways Dragonfly impressed into wartime service at RAF Gosport
Role Light Transport
Manufacturer de Havilland Aircraft Company
First flight 12 August 1935
Introduction 1936
Produced 1936–1938
Number built 67

The de Havilland DH.90 Dragonfly is a 1930s British twin-engined luxury touring biplane built by the de Havilland Aircraft Company at Hatfield Aerodrome.

Development

The Dragonfly shares a clear family resemblance with the Dragon Rapide, but is smaller and has higher aspect ratio, slightly sweptback wings. The lower wing has a shorter span than the upper, unlike the DH.89, and the top of the engine nacelles protrude much less above its surface because the fuel tank had been moved to the lower centre section. Structurally, too they are different: the Dragonfly had a new preformed plywood monocoque shell and strengthened fuselage. It was designed as a luxury touring aircraft for four passengers and a pilot, with provision for dual controls. The first aircraft, G-ADNA, first flew on 12 August 1935. The Dragonfly achieved maximum performance on low power, by using the new construction methods developed for the de Havilland Comet racer, and therefore was expensive to buy (£2,650). In modern terms, it was an executive transport, aimed at wealthy private individuals, often via the companies they owned.

Operational history

The first delivery was made in May 1936. Some 36 new-build Dragonflies went to private and company owners, about 15 to airlines/air taxis and three to clubs. Two each went to the Danish and Swedish air forces, and the Royal Canadian Mounted Police had four to combat rum-runners. Production ended in 1938.[1][2]

By 1939, several aircraft had moved from private to commercial use, like the fleet built up by Air Dispatch Ltd at Croydon Airport, headed by The Hon Mrs Victor Bruce. Amongst her seven examples were also some ex-airline machines.[3] They were used as air taxis between the various London airports, and also as Army Cooperation night flying trainers. Western Airways of Weston-super-Mare Airport used its Dragonfly on a scheduled service via Birmingham to Manchester.

Seven airframes were shipped to Canada, and erected by de Havilland Canada, where they served a variety of small commercial operators, the R.C.M.P. and two with the R.C.A.F. At least one, CF-BFF, was fitted with Edo floats, and used commercially.

In about 1937, three Dragonflies were bought by the Romanian government for crew training, appearing on their civil register.[4]

At the start of World War II, about 23 Dragonflies were impressed into the R.A.F and Commonwealth air forces, some six surviving to 1945. Overall, there were about thirteen flying in that year.

Dragonfly used by Silver City Airways as an executive transport in 1953
Dragonfly used by Silver City Airways as an executive transport in 1953

Silver City Airways operated a Dragonfly G-AEWZ as an executive transport from 1950 until 1960. By around 1970, only the two survivors noted below were active. In May 2018 Hertfordshire-based Uno bus named a fleet of buses after the Dragonfly plane.[5]

The fuel tanks in the Dragonfly are in the thickened lower centre-section, not immediately behind the engines as in the Dragon Rapide. As a result, only one aircraft was lost to fire. A common cause of loss was the frequent development of a vicious ground loop either on takeoff or landing, resulting in undercarriage writeoff and spar damage.

Variants

Surviving aircraft

de Havilland DH.89 and DH.90
de Havilland DH.89 and DH.90
Dragonfly G-AEDU (built 1937) at Kemble, England, in 2019
Dragonfly G-AEDU (built 1937) at Kemble, England, in 2019

Two flyable aircraft survive:

Operators

 Australia
 Belgium
 Canada
 Denmark
 Egypt
India India
 Iraq
Laos
  • Cie Laotienne de Commerce et de Transport (CLCT) – Two aircraft only
 Netherlands
 New Zealand
 Peru
 Rhodesia
 Romania
 South Africa
Spain Spanish Republic
 Spain
 Sweden
 Turkey
 Uruguay
 United Kingdom

Specifications

Data from British Civil Aircraft since 1919, Volume 2[11]

General characteristics

Performance

See also

References

  1. ^ Jackson (1978), pp. 374–9.
  2. ^ Hayes, pp. 145–50.
  3. ^ Hayes, p. 158.
  4. ^ Grey, C. G., and Bridgman, L., Jane's All the World's Aircraft 1938.(1972). p. 51b. Newton Abott: David & Charles ISBN 0-7153-5734-4
  5. ^ Team, routeone (22 May 2018). "Uno's £1m investment for 'really important route'".
  6. ^ Jane's (1938), p. 82c.
  7. ^ "Aircraft Registration Mark Query". Archived from the original on 16 July 2011. Retrieved 13 May 2008.
  8. ^ "CroydonAircraft.com is for sale". HugeDomains. Archived from the original on 14 May 2008.
  9. ^ a b Jackson (1988), p. 471.
  10. ^ "Aircraft registration | UK Civil Aviation Authority". www.caa.co.uk.
  11. ^ a b Jackson (1988), p. 150.
  12. ^ Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Bibliography