Loading...
Please wait, while we are loading the content...
Similar Documents
Inlet noise on 0.5-meter-diameter nasa qf-1 fan as measured in an unmodified compressor aerodynamic test facility and in an anechoic chamber
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gelder, T. F. Soltis, R. F. |
| Copyright Year | 1975 |
| Description | Narrowband analysis revealed grossly similar sound pressure level spectra in each facility. Blade passing frequency (BPF) noise and multiple pure tone (MPT) noise were superimposed on a broadband (BB) base noise. From one-third octave bandwidth sound power analyses the BPF noise (harmonics combined), and the MPT noise (harmonics combined, excepting BPF's) agreed between facilities within 1.5 db or less over the range of speeds and flows tested. Detailed noise and aerodynamic performance is also presented. |
| File Size | 6170897 |
| Page Count | 102 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760006790 |
| Archival Resource Key | ark:/13960/t2896027g |
| Language | English |
| Publisher Date | 1975-12-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Aerodynamic Noise Fans Compressor Rotors Acoustic Measurement Noise Spectra Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |