Experiments were conducted to document the tip vortex geometries and interactional effects between a hovering rotor and s body representing a simplified helicopter fuselage. The wide‐field shadowgraph technique was used to visualize the rotor tip vortices and to obtain quantitative
information on the trajectories, with and without the presence of the body. It was found that the effects of the body caused significant changes to both the radial contraction and axial displacements of the tip vortices compared to the isolated case. Direct impingement of the tip vortices
an the body surface was also observed, and found to cause large local wake deformations. The rotor performance was significantly affected by the body, producing a higher figure of merit relative to the isolated case.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Ctr. for Rotorcraft Education and Research, Dept. of Aerospace Engineering, Univ. of Maryland, College Park, Md.
Publication date: 1992-10-01
More about this publication?
The Journal of the American Helicopter Society is the world's only scientific journal dedicated to vertical flight technology. It is a peer-reviewed technical journal published quarterly by AHS International and presents innovative papers covering the state-of-the-art in all disciplines of rotorcraft design, research and development. (Please note that AHS members receive significant discounts on articles and subscriptions.)
Journal subscribers who are AHS members log in here if you are not already logged in.
Authors can find submission guidelines and related information on the AHS website.