Nodalized rotor

Details Nodalized rotor Nodalized rotor

B - Operations, Transporting

64

C

244/15

B64C 27/46 (2006.01) B64C 27/33 (2006.01) B64C 27/473 (2006.01)

Patent

CA 1246041

Abstract A nodalized rotor system is provided for a multi-bladed helicopter. Equally spaced radial arms each have an inboard flapping section to accommodate beam-wise blade flapping and an outboard flex section to accommodate pitch changes. A blade is coupled to the end of each arm with a cuff and pitch horn rigidly connected to the blade and pivotally connected to its arm in the region of the flapping section. The blade has a concentration of weight over the section of blade extending from about 32% to 42% of the hub-blade radius of running weight four times the running weight at 50% of the hub-blade radius. Said blade has a reduced mass at outboard 30% of the hub-blade radius, at a level of 80% of the running weight at 50% of the hub-blade radius.

473059

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