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Grahame-White Type VI
Hendon c 1913


Designed by J.D. North, the Grahame-White Type VI was a pusher configuration unequal-span biplane. The tail surfaces were carried on three steel tube booms, with the single upper boom passing through the propeller shaft and the lower pair to the rear of the undercarriage. The propeller was driven by a large-diameter tubular driveshaft and a duplex chain, the propeller being mounted at the top of the rear of the nacelle. There were no centre-section cabane struts, the upper wing being supported solely by the interplane struts. The engine was mounted at the front of the rectangular section nacelle behind a specially made curved radiator. The two crew members were seated either side, the pilot seated behind them.
The control wires for the tail surfaces were carried inside the upper boom, an arrangement credited to Horatio Barber, for whose Aeronautical Syndicate Ltd North had worked. The aircraft was armed with a Colt .30-calibre machine gun on a flexible mounting at the front of the nacelle.
First type to officially carry a number in catalogues and publications of the time.
While it was originally intended to be powered by a 120 hp (89 kW) Austro-Daimler 6 cylinder inline, it was shown at the 1913 Olympia Aero Exhibition fitted temporarily with a 90 hp (67 kW) Austro-Daimler instead.
Only one attempt was made to fly the Type VI. The underpowered aircraft only just managed to clear the hedge at the boundary of the airfield, and made a forced landing in the next field. North went on to design a broadly similar aircraft with a more conventional four-boom mounting for the tail surfaces, the Grahame-White Type XI.
Engine: 1 × Austro-Daimler 6-cyl., 90 hp (67 kW)
Propeller: 2-bladed Chauvière, 10 ft (3.0 m) diameter
Upper wingspan: 42 ft 6 in (12.95 m)
Lower wingspan: 23 ft 0 in (7.01 m)
Wing area: 390 sq ft (36 m2)
Airfoil: Eiffel plane No. 8
Length: 33 ft 9 in (10.29 m)
Empty weight: 2,200 lb (998 kg)
Gross weight: 2,950 lb (1,338 kg)
Maximum speed: 70 mph (113 km/h; 61 kn) at sea level
Endurance: 2¾ hours
Crew: 3
Armament: 1 Colt .30-calibre machine gun on flexible mounting

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