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Unsteady Aerodynamic Modeling in Roll for the NASA Generic Transport ModelReducing the impact of loss-of-control conditions on commercial transport aircraft is a primary goal of the NASA Aviation Safety Program. One aspect in developing the supporting technologies is to improve the aerodynamic models that represent these adverse conditions. Aerodynamic models appropriate for loss of control conditions require a more general mathematical representation to predict nonlinear unsteady behaviors. In this paper, a more general mathematical model is proposed for the subscale NASA Generic Transport Model (GTM) that covers both low and high angles of attack. Particular attention is devoted to the stall region where full-scale transports have demonstrated a tendency for roll instability. The complete aerodynamic model was estimated from dynamic wind-tunnel data. Advanced computational methods are used to improve understanding and visualize the flow physics within the region where roll instability is a factor.
Document ID
20120014566
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Murphy, Patrick C. (NASA Langley Research Center Hampton, VA, United States)
Klein, Vladislav (National Inst. of Aerospace Associates Hampton, VA, United States)
Frink, Neal T. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 26, 2013
Publication Date
August 13, 2012
Subject Category
Aircraft Stability And Control
Report/Patent Number
NF1676L-14070
Meeting Information
Meeting: 2012 AIAA Atmospheric Flight Mechanics Conference
Location: Minneapolis, MN
Country: United States
Start Date: August 13, 2012
End Date: August 16, 2012
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 284848.02.05.07.01
Distribution Limits
Public
Copyright
Public Use Permitted.

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