A preliminary comparison between the SR-6 propeller noise in flight and in a wind tunnel
- Author
- Dittmar, J. H.
- Published
- JAN 1, 1983.
- Physical Description
- 1 electronic document
- Additional Creators
- Mackall, K. G. and Lasagna, P. L.
Online Version
- hdl.handle.net , Connect to this object online.
- Restrictions on Access
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary
- High speed turboprops offer an attractive candidate for aircraft because of their high propulsive efficiency. However, one of the possible problems associated with these propellers is their high noise level at cruise condition that may create a cabin environment problem. Models of these propellers were tested for acoustics in the 8 by 6-foot wind tunnel and on the Jet Star airplane. Comparisons between the airplane and wind tunnel data for the SR-6 propeller are shown. The comparison of maximum blade passing tone variation with helical tip Mach number between the tunnel and flight data was good when corrected to the same test conditions. Directivity comparisons also showed fairly good agreement. These good comparisons indicate that the wind tunnel is a viable location for measuring the blade passage tone noise of these propellers.
- Other Subject(s)
- Collection
- NASA Technical Reports Server (NTRS) Collection.
- Note
- Document ID: 19830016016.
Accession ID: 83N24287.
NAS 1.15:83341.
NASA-TM-83341.
E-1596.
Meeting of the Acoustical Soc. of Am.; 9-13 May 1983; Cincinnati. - Terms of Use and Reproduction
- No Copyright.
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