Using engine thrust for emergency flight control
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Published by National Aeronautics and Space Administration, Dryden Flight Research Center, National Technical Information Service, distributor in Edwards, Calif, [Springfield, Va .
Written in English

Subjects:

  • Boeing 747 aircraft.,
  • MD 11 aircraft.,
  • Manual control.,
  • Thrust control.,
  • Numerical control.,
  • Controllability.,
  • Aircraft control.,
  • Emergencies.,
  • Flight control.

Book details:

Edition Notes

StatementFrank W. Burcham ... [et al.].
SeriesNASA/TM -- 1998-206552., NASA technical memorandum -- 206552.
ContributionsBurcham, Frank W., NASA Dryden Flight Research Center.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15546818M

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  rienced major flight control system failures, and the crews tried to use engine thrust for emergency flight control. In most cases, a crash resulted; the B, DC, and C-5A crashes claimed more than lives. A summary of these accidents has previ-ously been published.l With the advent of digital engine control systems. of flight control using only a wing engine thrust and CGY offset, along with the amount of CGY offset capability of some transport airplanes. The paper also presents simulation results of the throttle-only control capability and closed-loop control of ground track using computer-controlled thrust. Nomenclature AGL CGX CGY EPR FADEC FDS. Flight Control Using Only Engine Thrust If an airplane’s normal flight control surfaces fail for some reason, engine thrust can be used to provide gross control of flightpath and bank angle. In the following subsections, manual throttle manipulation by the pilot is discussed first; then a closed-loop PCA system is by: With modern digital control systems, using engine thrust for emergency flight control to supplement or replace failed aircraft normal flight controls has.

multiengine aircraft may use throttle manipulation for emergency flightpath control. Differential throttle control generates sideslip, which through dihedral effect, results in roll. Symmetric throttle inputs may be used to control pitch. Pilots of at least four wide-body aircraft have had to use throttles for emergency flight control. 1 These aircraft. The effect is more a function of change in thrust than of change in speed, and occurs near the time of the thrust increase. For the F, the thrust line passes within ± 1 in. of the vertical CG, depending on fuel quantity, and this effect is small. 3. Flightpath angle change due to the vertical compo- nent of thrust. Runway incursion: Aircraft is on Takeoff roll in weather or night conditions when another aircraft enters the runway — Evaluate nominal and FASTER engine response — Determine flight path that avoids intruding vehicle 2. Rudder failure: Use engine differential thrust to replace rudder yaw control. Using Engine Thrust for Emergency Flight Control: MD and B Results, NASA TM () Cached. b result nasa tm engine thrust emergency flight control program office nasa sti program office technical information important role graphic presentation.

Development and Flight Evaluation of an Emergency Digital Flight Control System Using Only Engine Thrust on an F Airplane Frank W. Burcham, Jr., Trindel A. Maine, C. Gordon Fullerton, and Lannie Dean Webb. BibTeX @MISC{Look97emergencyflight, author = {Offset A First Look and Frank W. Burcham and John Burken and Trindel A. Maine and John Bull and Office Of Management and Frank W. Burcham and John Burken and Trindel A. Maine and John Bull and Frank W. Burcham}, title = {Emergency Flight Control Using Only Engine Thrust and Lateral Center-of-Gravity Offset: A First Look}, year = {}}. Get this from a library! Using engine thrust for emergency flight control: MD and B results. [Frank W Burcham; NASA Dryden Flight Research Center.;]. (PCA) system in which computer-controlled engine thrust provides emergency flight control capability. Using this PCA system, an F and an MD airplane have been landed without using any flight controls. In simulations, C, B, and B .