Investigation of a Wing-Rotor Interaction System for Helicopters.
Abstract
This research includes experimental and analytical investigations to determine if favorable interference effects could be obtained from a wing-rotor interaction system. Lift and drag forces were measured on a wing, mounted in a cantilever fashion from the wall, and on a proprotor positioned above the wing on a shaft which ran through the ceiling of the test section. Test results showed significant increases in lift and decreases in drag for both the wing and the proprotor due to favorable interference effects. The analytical investigation developed a new lifting surface theory for subsonic wings which can also be interpreted as a vortex lattice method. Results were found to be more accurate and converge faster than conventional vortex lattice methods. The accuracy compared well with other lifting surface theories, but with much smaller computational times.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 06, 1978
- Accession Number
- ADA054093
Entities
People
- Fred R. Dejarnette
- James J. Murray
- Mohammad A. Takallu
- Neal T. Frink
- Steven L. Griffith
Organizations
- North Carolina State University