1773. Advanced Main Rotor System


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J B Partida: 1773. Advanced Main Rotor System. 1987.



The McDonnell Douglas Helicopter Company (MDHC) advanced rotor system is fitted onto the existing Model 500 vehicle which employs a bearingless main rotor hub with composite flexbeam, pitchcase, and removable blade. This advanced system is configured with four blades and exceeds the dynamic and performance characteristics of the current five blade system. The blade system flexbeam and pitchcase are constructed to interact, with the use of snubber-dampers, to accommodate flapping, feathering, and lead-lag rotor motions. This paper presents the mass property engineers’ contribution in the design and fabrication of the removable blade through the careful management of it mass properties.


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