It had been arrived at as a result of successful experiments with a rubber-driven model monoplane.

Each girder bore a pair of substantial flexibly mounted struts extending outwards, the wings being tensioned between the ends of the longitudinal girders and the outer ends of the struts by means of cables which formed the wing leading edges.

The trailing edges were under less tension, the intention being that the wings would automatically deform to spread flight loads.

[3] They had no internal spars, being stiffened by ribs aligned with the direction of flight sewn into pockets in the single thickness of fabric.

It was powered by a 50 hp (37 kW) Humber water-cooled engine using chains to drive a pair of tractor propellers between the wings, with the pilot sitting behind the engine.