Back Boeing Model 401
1943 - project

Boeing Model 401

Small two-seat helicopter designed in 1943 as either an open cockpit or enclosed cabin model.

Boeing Model 401 three-view drawing

Technical data for Boeing Model 401

Engine: 1 x 212hp Lycoming O-435D piston engine, main rotor diameter: 11.00m, length: 10.36m, gross weight: 1020kg

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