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Variable pitch fan system for NASA/Navy research and technology aircraftPreliminary design of a shaft driven, variable-pitch lift fan and lift-cruise fan was conducted for a V/STOL Research and Technology Aircraft. The lift fan and lift-cruise fan employed a common rotor of 157.5 cm diameter, 1.18 pressure ratio variable-pitch fan designed to operate at a rotor-tip speed of 284 mps. Fan performance maps were prepared and detailed aerodynamic characteristics were established. Cost/weight/risk trade studies were conducted for the blade and fan case. Structural sizing was conducted for major components and weights determined for both the lift and lift-cruise fans.
Document ID
19770016164
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Ryan, W. P. (Hamilton Standard Windsor Locks, CT, United States)
Black, D. M. (Hamilton Standard Windsor Locks, CT, United States)
Yates, A. F. (Hamilton Standard Windsor Locks, CT, United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1977
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA-CR-135185
Accession Number
77N23108
Funding Number(s)
CONTRACT_GRANT: NAS3-20033
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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