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flight-management strategies for escape from microburst encountersAn effort is underway by NASA, FAA, and industry to reduce the threat of convective microburst wind shear phenomena to aircraft. The goal is to develop and test a candidate set of strategies for recovery from inadvertent microburst encounters during takeoff. Candidate strategies were developed and evaluated using a fast-time simulation consisting of a simple point-mass performance model of a transport-category airplane and an analytical microburst model. The results indicate that the recovery strategy characteristics that best utilize available airplane energy include an initial reduction in pitch attitude to reduce the climb rate, followed by an increase in pitch up to the stick shaker angle of attack. The stick shaker angle of attack should be reached just as the airplane is exiting the microburst. The shallowest angle of climb necessary for obstacle clearance should be used. If the altitude is higher than necessary, an intentional descent to reduce the airspeed deceleration should be used. Of the strategies tested, two flight-path-angle based strategies had the highest recovery altitudes and the least sensitivity to variations in the encounter scenarios.
Document ID
19880016077
Document Type
Thesis/Dissertation
Authors
Hinton, David A.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1988
Subject Category
AIRCRAFT STABILITY AND CONTROL
Report/Patent Number
NASA-TM-4057
L-16448
NAS 1.15:4057
Funding Number(s)
PROJECT: RTOP 505-66-41-55
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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