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Power requirement of rotating rods in airflowExperiments were performed to determine the power required for rotating a rotor disc fitted with a number of radially arranged rods placed into a ducted airflow. An array of stationary rods, also radially arranged, were placed upstream close to the rotor with a small gap between the rods to cause wake interference. The results show that power increased with increasing airflow and the rate of increase varied considerably. At lower values of airflow the rate of increase was larger than at higher airflow and definite power peaks occurred at certain airflow rates, where the power attained a maximum within the test airflow range. During the test a maximum blade passage frequency of 2037 Hz was attained.
Document ID
19750006644
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Barna, P. S. (Old Dominion Univ. Norfolk, VA, United States)
Crossman, G. R. (Old Dominion Univ. Norfolk, VA, United States)
Date Acquired
September 3, 2013
Publication Date
September 1, 1974
Subject Category
Aerodynamics
Report/Patent Number
TR-74-M6
NASA-CR-132556
Accession Number
75N14716
Funding Number(s)
CONTRACT_GRANT: NAS1-11707
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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