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The prediction of transonic loading advancing helicopter rotors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Strawn, R. Tung, C. |
| Copyright Year | 1986 |
| Description | Two different schemes are presented for including the effect of rotor wakes on the finite-difference prediction of rotor loads. The first formulation includes wake effects by means of a blade-surface inflow specification. This approach is sufficiently simple to permit coupling of a full-potential finite-difference rotor code to a comprehensive integral model for the rotor wake and blade motion. The coupling involves a transfer of appropriate loads and inflow data between the two computer codes. Results are compared with experimental data for two advancing rotor cases. The second rotor wake modeling scheme in this paper is a split potential formulation for computing unsteady blade-vortex interactions. Discrete vortex fields are introduced into a three-dimensional, conservative, full-potential rotor code. Computer predictions are compared with two experimental blade-vortex interaction cases. |
| File Size | 608005 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870002348 |
| Archival Resource Key | ark:/13960/t0rr6qt79 |
| Language | English |
| Publisher Date | 1986-04-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Transonic Flow Computational Fluid Dynamics Blade-vortex Interaction Rotor Aerodynamics Flow Characteristics Computerized Simulation Rotary Wings Vortices Finite Difference Theory Wakes Aerodynamic Characteristics Wing Loading 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 |
