The Effect of Strakes on Vortical Flows Applied to Aircraft.
Abstract
The influence of strakes placed along vortical flows has been determined in order to define ways of drag reduction on wake-like flow fields present on aircraft afterbodies. Strakes of different aspect ratio and thickness were tested at different angles of incidence with respect to a vortex path in order to evaluate the best configuration which can reduce, or minimise, the cross flow kinetic energy, thus the vortex drag of a vortical flow. The flow field in the vicinity of the boattail of a scale cargo aircraft was studied. The aircraft was tested with and without strakes placed on its afterbody, the results confirm that when strakes are properly placed on the boattail, a reduction in drag is achievable. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1984
- Accession Number
- ADA139989
Entities
People
- G. G. Ordonez
Organizations
- von Kármán Institute for Fluid Dynamics