A new method for predicting rotor wake in low speed and hovering flight is described to investigate the motion of the helical tip vortex. Beginning with the generalized wake model, a semi-empirical correction for the vortex core effect on rotor wake is made and free wake calculation is carried out. As an example of its engineering application, the calculated downwash velocity field along the rocket launch line is presented and simply analysed. In terms of theory, the method developed here may provide of a referable basis for further study the formation mode of the tip vortex and vortex core interior structure.
A new method for predicting rotor wake geometries and downwash velocity field
Aircraft Engineering and Aerospace Technology ; 71 , 2 ; 129-135
1999-04-01
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Rotors , Flight , Aerodynamics , Vortex wake , Helicopters
CONTRIBUTED PAPERS - A new method for predicting rotor wake geometries and downwash velocity field
Online Contents | 1999
|Helicopter Rotor Downwash Calculation using the Vortex Element Method for the Wake Modelling
British Library Conference Proceedings | 1996
|Helicopter Rotor Downwash Calculation using the Vortex Element Method for the Wake Modelling
British Library Online Contents | 1996
|A Method for Calculating Rotor Downwash Velocity Along the Rocket Launch Line
British Library Conference Proceedings | 1994
|The unseen hazard of rotor downwash
Tema Archiv | 1992
|