국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	DEVELOPMENT OF A LOW-ASPECT RATIO FIN FOR FLIGHT RESEARCH EXPERIMENTS
저자	David M. Richwine and John H. Del Frate
Keyword	Aerodynamic loads: F-15 directional stability; Flight test fixture; Flow visualization; Structural design; Structural ground testing; Water tunnel visualization studies
URL	http://www.dfrc.nasa.gov/DTRS/1994/PDF/H-1993.pdf
보고서번호	NASA-TM-4596
발행년도	1994
출처	NASA Dryden Flight Research Center
ABSTRACT	A second-generation flight test fixture, developed at NASA Dryden Flight Research Center, offers a generic testbed for aerodynamic and fluid mechanics research. The new fixture, a low-aspect ratio vertical fin shape mounted on the centerline of an F-15B aircraft lower fuselage, is designed for flight research at Mach numbers up to 2.0. The new fixture is a composite structure with a modular configuration and removable components for functional flexibility. This report describes the multidisciplinary design and analysis approach used to develop the fixture. The approach integrates conservative assumptions with simple analysis techniques to minimize the time and cost associated with its development. Presented are the principal disciplines required for this effort, which include aerodynamics, structures, stability, and operational considerations. In addition, preliminary results from the first phase of flight testing are presented. Acceptable directional stability and flow quality are documented and show agreement with predictions. Future envelope expansion activities will minimize current limitations so that the fixture can be used for a wide variety of high-speed aerodynamic and fluid mechanics research experiments.