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Model B (1957, project)
This project has been designed to meet specifications by the United States Air Force and the United States Navy. The end-product is to be a convertiplane with two rotors and having an aircraft-helicopter configuration. The change-over from one configuration to the other will be effected simply by swivelling the wing, which has a four-bladed rotor at each tip. The blades, which are of small radius, will rotate at high speed. The power plant planned for this project is two Boeing 502 turbines. A wing structure designed along the lines stated has already been given prolonged tests on the test bed. Model E (1954, project)
This project is for a large-sized rotorcraft with wings in tandem and four four-bladed intermeshing rotors. Power is to be provided by four gas turbines, and the market aimed at is freight or passenger carriage over short distances. Model F (1954, project)
This project calls for a single-seater helicopter of less ambitious proportions than Model E. It is to have four rotors with inter-meshing blades and power provided by four French Artouste II shaft-turbine engines built under licence in the United States. P.Lambermont "Helicopters and Autogyros of the World", 1958
| Technical data for Model E
Number of seats: 70,
engine: 4 gas turbines equivalent to 5700hp,
rotor diameter: 16.66m,
weight fully loaded: 19375kg,
weight unloaded: 13850kg,
cruising speed: 224km/h,
rate of climb: 640m/min,
range: 480km
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