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Should helicopter noise be measured differently from other aircraft noise? a review of the psychoacoustic literature
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Molino, J. A. |
| Copyright Year | 1982 |
| Description | A review of 34 studies indicates that several factors or variables might be important in providing a psychoacoustic foundation for measurements of the noise from helicopters. These factors are phase relations, tail rotor noise, repetition rate, crest level, and generic differences between conventional aircraft and helicopters. Particular attention was given to the impulsive noise known as blade slap. Analysis of the evidence for and against each factor reveals that, for the present state of scientific knowledge, none of these factors should be regarded as the basis for a significant noise measurement correction due to impulsive blade slap. The current method of measuring effective perceived noise level for conventional aircraft appears to be adequate for measuring helicopter noise as well. |
| File Size | 5367522 |
| Page Count | 89 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830005666 |
| Archival Resource Key | ark:/13960/t4sj69m2k |
| Language | English |
| Publisher Date | 1982-11-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Psychoacoustics Human Tolerances Effective Perceived Noise Levels Helicopters Blade-vortex Interaction Noise Prediction Aircraft Tail Rotors Noise Generators Blade Slap Noise Noise Measurement 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 |
