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Acoustic measurements of a full-scale rotor with four tip shapes. volume 2: appendices c, d, e and f
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mosher, M. |
| Copyright Year | 1984 |
| Description | A full scale helicopter with four different blade tip geometries is tested in a 40- by 80-foot wind tunnel. Performance, loads, and noise are measured. The four tip shapes tested were rectangular, tapered, swept, and swept/tapered. The noise data include measurements of the sound pressure levels in decibels dB, decibels adjusted dBA, and tone-corrected PNdB, for all of the conditions tested. Also included are the detailed measurements, 1/3 octave spectra and time histories for some selected data, and plots of dBA as function of test condition. Some performance measurements are included to aid interpretation of the noise data. |
| File Size | 8193868 |
| Page Count | 352 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840017358 |
| Archival Resource Key | ark:/13960/t5q86520p |
| Language | English |
| Publisher Date | 1984-04-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Blade Tips Performance Tests Lifting Rotors Scale Models Aerodynamic Coefficients Noise Measurement Rotary Wings Lift Geometry Aerodynamic Configurations Wind Tunnel Tests Pressure Measurement Helicopter Design Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
