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The aircraft made only one brief flight, on November 2, 1947, and the project never advanced beyond the prototype. Built from wood (Duramold process) because of wartime restrictions on the use of aluminum and concerns about weight, the aircraft was nicknamed the Spruce Goose by critics, although it was made almost entirely of birch.
The Hughes H-4 Hercules, made of birch ply Duramold Samples of Duramold at the Evergreen Aviation & Space Museum Duramold is a composite material process developed by Virginius E. Clark . Birch or poplar plies are impregnated with phenolic resin and laminated together in a mold under heat (280 °F, 138 °C) and pressure for use as a lightweight ...
In 1955, Howard Hughes split the helicopter production unit from the Hughes Aircraft Company, and reconstituted it with Hughes Tool Company, calling it Hughes Tool Company's Aircraft Division. The Aircraft Division had a focus on the production of light helicopters, mainly the Hughes 269 / 300 and the OH-6 Cayuse / Hughes 500 .
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A month later, on 13 September at Martin Field near Santa Ana, California, Hughes broke the landplane speed record clocking 352.39 mph (567.12 km/h) averaged over four timed passes. The aircraft was loaded with a minimal amount of fuel to keep the weight down and Hughes was not supposed to make the 3rd and 4th passes.
Hughes Aircraft Company founder Howard Hughes had first promoted the D-2 as a "pursuit type airplane", (i.e. a fighter aircraft), [8] [9] but it lacked both the maneuverability of a fighter and the load-carrying capacity of bomber, and could not accommodate required military equipment; additionally, the USAAF Air Materiel Command (AMC) objected ...
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