De Havilland DH87 Hornet Moth | BAE Systems | International

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De Havilland DH87 Hornet Moth

A long-range biplane tourer with folding wings, side-by-side seating and fully enclosed cabin comfort for the crew.

De Havilland DH87 Hornet Moth prototype E.6 The De Havilland DH87 Hornet Moth prototype E.6 showing original rounded wingtips

The prototype DH87 Hornet Moth E-6 (later G-ACTA) flew for the first time on 9 May 1934. The Hornet Moth combined a biplane configuration with the advantages of fully enclosed side-by-side seating.

 

There were clear echoes of the DH85 in respect of the Gipsy Major engine installation. The prototype featured slightly tapered wings with a rounded tip shape.

 

De Havilland DH87A Hornet Moth G-ADIS DH87A Hornet Moth G-ADIS showing initial production wing planform.

 

Before production commenced, the wing planform was changed to a high aspect ratio tapered elliptical shape reminiscent of that used by the DH86 Express. In this form, the type was known as the DH87A. The tapered wing was found to be prone to sudden tip stall and this gave rise to operational concerns.

 

De Havilland DH87B Hornet Moth G-ADNE DH87B Hornet Moth G-ADNE showing the revised rectangular wing planform.

 

In 1936, G-ADIS appeared having been modified with new square-tipped wings with very slight taper. This became the new production standard, the aircraft then being known as the DH87B. DH87A owners were invited to have the new wings fitted to replace the pointed originals.

 

A total of 165 Hornet Moths were built, with approximately half of these exported. A number of aircraft operated on either floats or skis in Canada.

 

De Havilland DH87B Hornet Moth VH-UXY DH87B Hornet Moth VH-UXY at Echuca in April 2013

 

Variants 

DH87 One only, prototype E-6 (later G-ACTA)
DH87A Initial production with increased span high aspect ratio tapered wing planform
DH87B Later production with squared-off wing tips. All aircraft modified to DH87B standard

Specifications

  (i) DH87; (ii) DH87A; (iii) DH87B
Powerplant One 130hp De Havilland Gipsy Major 1
Span (i) 30ft 7in; (ii) 32ft 7in: (iii) 31ft 11in
Maximum Weight (i) 1,800 lb; (ii) 1,925 lb; (iii) 2,000 lb
Capacity  Pilot and passenger
Maximum Speed (i) 117 mph; (ii) 131 mph; (iii) 124 mph
Normal Cruising Speed (ii) 111 mph; (iii) 105 mph
Range (ii) 640 miles; (iii) 620 miles

Numbers and Survivors

Number built 165 Approximately half of these were exported.
Survivors 13 examples are listed in the CAA database, all having current certificates of airworthiness in March 2017. Two aircraft are registered in Australia.
 

Other information