국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	USING ENGINE THRUST FOR EMERGENCY FLIGHT CONTROL: MD-11 AND B-747 RESULTS
저자	Frank W. Burcham, Jr., Trindel A. Maine, John J. Burken and John Bull
Keyword	B-747; Emergency control; MD-11; Propulsion control; Throttle-only-control
URL	http://www.dfrc.nasa.gov/DTRS/1998/PDF/H-2232.pdf
보고서번호	NASA-TM-1998-206552
발행년도	1998
출처	NASA Dryden Flight Research Center
ABSTRACT	With modern digital control systems, using engine thrust for emergency flight control to supplement or replace failed aircraft normal flight controls has become a practical consideration. The NASA Dryden Flight Research Center has developed a propulsion-controlled aircraft (PCA) system in which computer-controlled engine thrust provides emergency flight control. An F-15 and an MD-11 airplane have been landed without using any flight control surfaces. Preliminary studies have also been conducted that show that engines on only one wing can provide some flight control capability if the lateral center of gravity can be shifted toward the side of the airplane that has the operating engine(s). Simulator tests of several airplanes with no flight control surfaces operating and all engines out on the left wing have all shown positive control capability within the available range of lateral center-of-gravity offset. Propulsion-controlled aircraft systems that can operate without modifications to engine control systems, thus allowing PCA technology to be installed on less capable airplanes or at low cost, are also desirable. Further studies have examined simplified ?CA Lite?and ?CA Ultralite?concepts in which thrust control is provided by existing systems such as autothrottles or a combination of existing systems and manual pilot control.