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Improved methods for calculating the thickness noise
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Azuma, A. Nakamura, Y. |
| Copyright Year | 1978 |
| Description | Advanced methods to compute the rotor thickness noise which is predominant in the case of high speed rotor were developed. These methods were deduced from a previous method by transforming the integral coordinate, commuting the order of integration and differential, and/or performing chordwise integration analytically with some adequate assumption. The necessary computational times and waveforms obtained by the previous and three advanced methods were compared. It was then concluded that the advanced methods could save the computational time compared with the previous method with the same accuracy. |
| File Size | 690393 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780024889 |
| Archival Resource Key | ark:/13960/t6g20sj9h |
| Language | English |
| Publisher Date | 1978-08-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Thickness Accuracy Airfoil Profiles Aircraft Noise Helicopters Pollution Control Rotor Aerodynamics Noise Pollution Prediction Analysis Techniques Aeroacoustics Rotary Wings Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
