Loading...
Please wait, while we are loading the content...
Similar Documents
Prop rotor acoustics for conceptual design (Document No: 19960020483)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wells, Valana L. |
| Copyright Year | 1996 |
| Description | The report describes a methodology for the simple prediction of noise generated by a tilt-rotor aircraft in hover and forward flight. In order to avoid the computational penalties associated with exact noise calculations, simplifications to the loading noise calculation and the blade-vortex interaction noise calculation have been introduced. The loading noise computation utilizes a constant chordwise loading assumption, while the BVI noise level is estimated through use of a dimensionless parameter, here termed 'BVI number.' The acoustic computation code, designed as a module for use with VASCOMP, has two modes of operation, one as a quick estimator of acoustic amplitude produced by a tilt rotor with a typical rotor design and the other as a tool for rotor parametric design studies. |
| File Size | 977374 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960020483 |
| Archival Resource Key | ark:/13960/t8pc7xf6j |
| Language | English |
| Publisher Date | 1996-04-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Horizontal Flight Tilt Rotor Aircraft Pressure Effects Noise Intensity Blade-vortex Interaction Noise Prediction Aircraft Mathematical Models Rotor Blades Dimensionless Numbers Blade Slap Noise Aeroacoustics Hovering 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 |
