De Havilland DH.71 Tiger Moth

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DH.71 Tiger Moth
De Havilland DH 71 Tiger Moth.jpg
The first prototype D.H.71 Tiger Moth G-EBQU
Rolehigh-speed research and racing monoplane
National originUnited Kingdom
Manufacturer De Havilland Aircraft Company
First flight24 June 1927
Introduction1927
Retired1930
Number built2

The de Havilland DH.71 Tiger Moth was a British single-seat monoplane, designed to research high-speed flight and to test replacement engines for the Cirrus. Only two were built. [1]

Contents

Design and development

It was a low-wing monoplane based on the earlier Moth biplanes with a stressed plywood covering and the cockpit designed around its test pilot, Hubert Broad, to make it as streamlined as possible: this resulted in the fuselage sides being sloped outwards to accommodate his shoulders. [1] The Tiger Moth had a fixed conventional landing gear with a tail skid. [1] The first aircraft built (registration G-EBQU) first flew from Stag Lane Aerodrome on 24 June 1927 and was fitted with an 85 hp (63 kW) ADC Cirrus II engine to check its handling characteristics. This was then replaced with Major Halford's prototype engine, by then named the Gipsy. [1] The second example, G-EBRV, was fitted with a Cirrus engine and first flew on 28 July 1927. [1]

Operational history

Both aircraft were entered for the 1927 King's Cup Race which was to be held at Hucknall on 30 July; 'QU was withdrawn but Broad flew 'RV in the race, retiring because of handling problems. [1]

In August 1927 Broad flew G-EBQU over a 62-mile (100 km) closed-circuit to set a new record for Class III Light Aircraft of 186.47 mph (300.09 km/h). [1] Five days later he flew to 19,191 ft (5,849 m) without oxygen in an attempt to break the altitude record for its category. For these record attempts the aircraft was fitted with new wings with a reduced span of 19 ft (6 m). [1]

G-EBQU was exported to Australia in 1930 and registered VH-UNH. On 17 September 1930 it crashed when the engine cut out while practising for an air race, killing pilot David Smith. [1] The second airframe was for a time displayed outside de Havilland's Hatfield factory, eventually being destroyed there on 3 October 1940 during an air raid. [1]

Specifications (G-EBRV)

DH 71 3-view drawing from NACA Aircraft Circular 57 DH 71 3-view NACA Aircraft Circular 57.jpg
DH 71 3-view drawing from NACA Aircraft Circular 57

Data fromDe Havilland Aircraft since 1909. [1]

General characteristics

Performance

See also

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References

  1. 1 2 3 4 5 6 7 8 9 10 11 Jackson 1987, pp. 278–281

Bibliography