| 摘要 |
753,970. Helicopters. UNITED AIRCRAFT CORPORATION. Sept. 14, 1954 [Oct. 27, 1953], No. 26583/54. Class 4. A helicopter having a fuselage housing a crew compartment 12 and a passenger or freight compartment 14 and terminating in a tail core 16 is powered by gas turbine plant 32 housed in the rear part of a pylon 22 mounted on the fuselage above the compartment 14. One or two side-by-side gas turbine engines are each drivingly connected through a fluid coupling 34 and a gear-box 24 to the drive shaft 28 of the rotor 30. The gear-box 24 provides a take-off for a drive shaft 42 for a tail rotor 38. Conventional cyclical and collective blade pitch-changing mechanism is described wherein the control rods from the pilot-controlled members 50, 108 pass upwardly behind the crew seats within a duct 65. Specification 734,450 is referred to. |
