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Test results of flight guidance for fuel conservative descents in a time-based metered air traffic environmentThe NASA developed, implemented, and flight tested a flight management algorithm designed to improve the accuracy of delivering an airplane in a fuel-conservative manner to a metering fix at a time designated by air traffic control. This algorithm provides a 3D path with time control (4D) for the TCV B-737 airplane to make an idle-thrust, clean configured (landing gear up, flaps zero, and speed brakes retracted) descent to arrive at the metering fix at a predetermined time, altitude, and airspeed. The descent path is calculated for a constant Mach/airspeed schedule from linear approximations of airplane performance with considerations given for gross weight, wind, and nonstandard pressure and temperature effects. The flight management descent algorithms are described and flight test results are presented.
Document ID
19810010510
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Knox, C. E.
(NASA Langley Research Center Hampton, VA, United States)
Person, L. H., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1981
Publication Information
Publication: The 1980 Aircraft Safety and Operating Probl., Pt. 1
Subject Category
Air Transportation And Safety
Accession Number
81N19036
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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