Abstract
To get methods avoiding system resonance, a practical analytical model of a helicopter's mechanical system of torsional oscillation was developed. The torsional system consists of the helicopter's propulsion, the transmission system, the rotor and the tail rotor. The modal properties including modal frequencies and mode shapes of the torsional oscillation system were calculated and analyzed with eigen analysis and impedance matching method. The coupled modal properties were analyzed and compared with the hub fixed isolated rotor and the coupled rotor/propulsion/transmission system. The influence to the isolated blade and the rotor of coupled torsional system by changing rotor speed was obtained. Some effective methods to avoid resonance in designing were given.
| Original language | English |
|---|---|
| Pages (from-to) | 438-443 |
| Number of pages | 6 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 30 |
| Issue number | 5 |
| State | Published - May 2004 |
Keywords
- Characteristic values
- Helicopter
- Resonance
Fingerprint
Dive into the research topics of 'Coupled helicopter rotor/propulsion/transmission system torsional vibration analytical model and coupled influence investigation'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver