De Havilland Hercules Aircraft

Production Details

Design Company:

The de Havilland Aircraft Co Ltd

First Flight:

30 September 1926

DH.66 Hercules:

11 - de Havilland Aircraft Co Ltd

Type Specification

Applies to:

de Havilland DH.66 Hercules

Type:

Three engined passenger carrying biplane

Wing:

Equal span biplane. Two sets of interplane struts on either side of fuselage. Top centre section carried from fuselage by four steel tube struts. Wing structure of spruce spars and ribs covered with fabric. Ailerons on bottom planes only

Fuselage:

Rectangular structure, of steel tubes. Inside steel frame is a timber framed and plywood walled cabin and outside steel frame is covered with fabric

Tail Unit:

Biplane type. Two fixed horizontal surfaces, the upper one of considerably smaller chord and slightly less span than bottom. Elevators on bottom surface only. Three fins interconnect the two surfaces, with three balanced rudders

Landing Gear:

Divided type. Consists of two Vees, attached under wing engine mountings and two sloping axles hinged to the bottom fuselage longerons

Power Plant:

Three 450 hp Bristol Jupiter VI air cooled engines, one in the nose and one mounted on each lower wing

Accommodation:

Enclosed pilots cockpit, seating two, behind nose engine. Under wing is main cabin providing space for fourteen passengers

Span:

79 ft 6 in

Length:

56 ft

Height:

18 ft 3 in

Wing Area:

1,547 sq ft

Empty:

8,890 lb

Loaded:

15,600 lb

Max Speed:

130 mph

Initial Rate of Climb:

635 ft/min

Absolute Ceiling:

13,200 ft

Preserved in British Museums

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