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Simulation Study of Flap Effects on a Commercial Transport Airplane in Upset ConditionsAs part of NASA's Aviation Safety and Security Program, a simulation study of a twinjet transport airplane crew training simulation was conducted to address fidelity for upset or loss of control conditions and to study the effect of flap configuration in those regimes. Piloted and desktop simulations were used to compare the baseline crew training simulation model with an enhanced aerodynamic model that was developed for high-angle-of-attack conditions. These studies were conducted with various flap configurations and addressed the approach-to-stall, stall, and post-stall flight regimes. The enhanced simulation model showed that flap configuration had a significant effect on the character of departures that occurred during post-stall flight. Preliminary comparisons with flight test data indicate that the enhanced model is a significant improvement over the baseline. Some of the unrepresentative characteristics that are predicted by the baseline crew training simulation for flight in the post-stall regime have been identified. This paper presents preliminary results of this simulation study and discusses key issues regarding predicted flight dynamics characteristics during extreme upset and loss-of-control flight conditions with different flap configurations.
Document ID
20050232780
Document Type
Preprint (Draft being sent to journal)
Authors
Cunningham, Kevin (NASA Langley Research Center Hampton, VA, United States)
Foster, John V. (NASA Langley Research Center Hampton, VA, United States)
Shah, Gautam H. (NASA Langley Research Center Hampton, VA, United States)
Stewart, Eric C. (NASA Langley Research Center Hampton, VA, United States)
Ventura, Robin N. (NASA Langley Research Center Hampton, VA, United States)
Rivers, Robert A. (NASA Johnson Space Center Houston, TX, United States)
Wilborn, James E. (Boeing Co. Seattle, WA, United States)
Gato, William (Boeing Co. Seattle, WA, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2005
Subject Category
Aeronautics (General)
Report/Patent Number
AIAA Paper 2005-5908
Meeting Information
AIAA Guidance, Navigation, and Control Conference and Exhibit(San Francisco, CA)
Funding Number(s)
OTHER: 23-079-30-31
Distribution Limits
Public
Copyright
Public Use Permitted.
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