국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	DEVELOPMENT OF A FLUSH AIRDATA SENSING SYSTEM ON A SHARP-NOSED VEHICLE FOR FLIGHT AT MACH 3 TO 8
저자	Mark C. Davis, Joseph W. Pahle, John Terry White, Laurie A. Marshall, Michael J. Mashburn and Rick Franks
Keyword	Airdata calibration; FADS; Flush airdata sensing system; Hypersonics; Wedge forebody; Wind tunnel test
URL	http://www.dfrc.nasa.gov/DTRS/2000/PDF/H-2396.pdf
보고서번호	NASA-TM-2000-209017
발행년도	2000
출처	NASA Dryden Flight Research Center
ABSTRACT	NASA Dryden Flight Research Center has developed a flush airdata sensing (FADS) system on a sharp-nosed, wedge-shaped vehicle. This paper details the design and calibration of a real-time angle-of-attack estimation scheme developed to meet the onboard airdata measurement requirements for a research vehicle equipped with a supersonic-combustion ramjet engine. The FADS system has been designed to perform in flights at speeds between Mach 3 and Mach 8 and at angles of attack between ? deg and 12 deg. The description of the FADS architecture includes port layout, pneumatic design, and hardware integration. Predictive models of static and dynamic performance are compared with wind-tunnel results across the Mach and angle-of-attack range. Results indicate that static angle-of-attack accuracy and pneumatic lag can be adequately characterized and incorporated into a real-time algorithm.