Design of an Infinite-Swept-Wing Glove for In-Flight Discrete-Roughness-Element Experiment Academic Article uri icon

abstract

  • Copyright © 2014 by Indian Institute of Space Science and Technology, Thiruvananthapuram, India. Published by the American Institute of Aeronautics and Astronautics, Inc. The Subsonic Aircraft Roughness Glove Experiment is an in-flight experiment designed to meet the NASA Environmentally Responsible Aviation project requirements. The goal of the experiment was to demonstrate the discrete-roughness-element technology to delay transition on a swept wing at transport-relevant conditions and subject to crossflow instability. In this paper, a redesign of that experiment is described for a different aircraft (Gulfstream-IIB), meeting the same requirements, but using a new methodology that promotes infinite-swept-wing flow on the glove test article. The new glove has the designation TAMU-0706. Increasing the demonstrated capabilities of both natural laminar flow and discrete roughness elements is a large step toward practical laminar flow on transport aircraft. Moreover, the infinite-swept-wing flow methodology not only increases the effective test region of the wing glove, but is well adapted for code-validation studies of discrete roughness element and other laminar-flowcontrol technologies.

author list (cited authors)

  • Tufts, M. W., Reed, H. L., & Saric, W. S.

citation count

  • 7

publication date

  • September 2014