Back Weir W.5
1938

Weir W.5

Weir's chief designer, C.G.Pullin, first thought of converting the W.4 autogyro into a helicopter by using two co-axial rotors, but he finally adopted the system of rotors carried by outriggers on either side of the fuselage, like the 1937 record-breaking Focke 61.

The W.5 was a single-seater powered by an air-cooled engine; each of the two two-bladed rotors had cyclic and collective pitch control and they turned at 430 r.p.m.

This helicopter made its first flight at Dalrymple, Ayrshire, on 7th June 1938, when it was piloted by R.A.Pullin, son of the chief designer. By the outbreak of World War II it had logged eighty hours' flying time.

P.Lambermont "Helicopters and Autogyros of the World", 1958

Weir W.5

Technical data for Weir W.5

Number of seats: 1, engine: 1 x Weir rated 50hp, rotor diameter: 4.57m, gross weight: 381kg, max. speed: 112km/h, rate o climb: 122m/min

Comments 
Charles E. MacKay, charlese87=tiscali.co.uk, 15.07.2013

On one occasion at an air display it shed a rotor. This is the first British practical helicopter. The device behind Raymond Pullin is a camera. It was a very small machine. It owed nothing to the W4 having being more influenced by the Focke Achgellis Helicopter.The outriggers were made of Morris plywood The W4 never took to the sky having crashed when the engine was run up.The wooden rotors were made by Morris furniture Glasgow to an American aerofoil section design

polo, poloalobabab=gmail.com, 16.06.2011

rotors had cyclic and collective pitch control and they turned at 430 r.p.m.

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