Reduction of Transonic Slotted Wall Interference by Means of Slat Contouring.
Abstract
A set of experiments was accomplished to first establish the extent of wall interference in the AFFDL 15-Inch Transonic Slotted Wall Tunnel and subsequently to provide criteria for alteration to the slat geometry to verify interference-free conditions. The wall design concept is based on external free-flight mutual compatibility conditions imposed on pairs of independent mid-field flow quantities and is dependent upon highly accurate local measurement of any independent set of such flow properties, e.g., flow angle and static pressure. Biconvex airfoils of 2.5 and 5-inch chord were used as models in this two-dimensional embodiment of the mid-field flow concept. The nonlifting case was verified and baseline data for planned wall interference reduction tests with lift were obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1975
- Accession Number
- ADA009591
Entities
People
- T. M. Weeks
Organizations
- Flight Dynamics Laboratory