First rotary wing craft built in Australia, by Melbourne engineer Molyneux. It had tandem three-blade rotors.
G.Apostolo "The Illustrated Encyclopedia of Helicopters", 1984
The only attempt at rotary wing construction in Australia has been made by G.C.Molyneux, a consulting engineer of Melbourne in the State of Victoria.
This rotorcraft, developed from a small-scale experimental model, will be the first Australian-built helicopter. It will have two rotors set in tandem, each rotor having three blades.
P.Lambermont "Helicopters and Autogyros of the World", 1958
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"Flight", 17 February 1956
Yet another interesting private venture on the Australian scene is the Molyneux two-seater helicopter, predecessor of the Molyneux XM-1000 five-seat, tandem rotor helicopter powered by a 550hp Pratt and Whitney Wasp engine.
"Flight", 23 August 1957
Technical data for XM-1000
Number of seats: 5, engine: 1 x 500hp, rotor diameter: 9.14m, gross weight: 1814kg, cruising speed: 145km/h, inclining climb: 296m/min, range: 560km