Abstract
The application of the aerodynamic-phase-lag off-axis response correction technique to blade-element models of the UH60 helicopter is presented. Frequency domain techniques are used to find the optimal aerodynamic-phase-lag angle for the correlation between the responses of a higher order linearized model for the aircraft and flight test data. Significant improvement in the off-axis response correlation of a nonlinear model is shown. A complete unsteady aerodynamic vortex model is configured and applied to study the influence of various unsteady aerodynamic effects. Least square techniques are used to find the optimal aerodynamic-phase-lag angle and a vortex model is used to study its sensitivity to various rotor parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 1337-1355 |
| Number of pages | 19 |
| Journal | Annual Forum Proceedings - American Helicopter Society |
| Volume | 2 |
| State | Published - 1998 |
| Event | Proceedings of the 1998 54th Annual Forum. Part 2 (of 2) - Washington, DC, USA Duration: 20 May 1998 → 22 May 1998 |
ASJC Scopus subject areas
- Transportation
- Aerospace Engineering