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Predesign study for a modern 4-bladed rotor for RSRAThe feasibility of providing a modern four-bladed rotor for flight research testing on a rotor system aircraft was evaluated. The capabilities of a state of the art rotor system and the contributions of key design parameters to these capabilities were investigated. Three candidate rotors were examined: the UH-60A BLACK HAWK rotor with and without root extenders and the H-3 composite blade rotor. It was concluded that the technical/cost objectives could best be accomplished using the basic BLACK HAWK rotor (i.e. without root extenders). Further, the availability of three existing sets of blade tip of varying design, together with a demonstrated capability for altering airfoil geometry should provide early research information on important design variables at reduced cost.
Document ID
19830004795
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Davis, S. J. (Sikorsky Aircraft Stratford, CT, United States)
Date Acquired
September 4, 2013
Publication Date
March 1, 1981
Subject Category
Aeronautics (General)
Report/Patent Number
NAS 1.26:166155
NASA-CR-166155
Accession Number
83N13065
Funding Number(s)
CONTRACT_GRANT: NAS2-10691
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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