AIAA Paper 2006-0666. Presented at the 44th AIAA Aerospace Sciences Meeting and Exhibit, January 9, 2006, pages 1-8.
NOTE: At the time of publication, the author Russell M. Cummings was on sabbatical leave from Cal Poly.
The Advanced Remote Ground Unattended Sensor uses drag brakes to control its terminal velocity during flight. An experimental evaluation of the geometry was performed at Mach numbers between 0.20 and 0.50 with a 61.5% scale model in the U.S. Air Force Academy Subsonic Wind Tunnel. Configurations tested include baseline drag brakes fully deployed, an array of perforated drag brake designs, as well as various other related drag brake design features. Improvements to the baseline design are discussed and an improved configuration is presented. Limited unsteady computations were performed for selected cases using detached-eddy simulation to understand various experimental results. The overall flight characteristics of the Advanced Remote Ground Unattended Sensor were improved, including the elimination of unusual lift trends and the tendency of the vehicle to exhibit coning motion during freefall.
This article is in the public domain. Published by American Institute of Aeronautics and Astronautics.