Boots – shoes – and leggings
Patent
1991-07-03
1992-06-09
Black, Thomas G.
Boots, shoes, and leggings
364446, 364440, 244182, G06F 1550
Patent
active
051213257
ABSTRACT:
A required time of arrival (RTA) control system (200, 220, 240) is disclosed for use with an aircraft on-board computer system (100). The control system (200, 220, 240) is adapted to provide data for controlling aircraft flight in a manner so as to meet time of arrival constraints at selected waypoints. The control system (200, 220, 240) includes means (212) for determining a time error between an estimated time of arrival and a designated RTA. A cost index predictor (216) is utilized to determine an estimated cost index parameter for meeting time of arrival constraints, while maintaining relative minimum fuel consumption. A flight profile predictor (202) is adapted to generate requisite target air speed data based on the estimated cost index parameter. In one embodiment, the system (240) includes determination of a time window based on maximum and minimum permissible cost index and speed limiting parameters. Dead-band control of the time error is also provided for maintaining stability and reducing throttle activity.
REFERENCES:
patent: Re31962 (1985-07-01), Brodeur
patent: 3443073 (1969-05-01), Cohen
patent: 4012900 (1977-03-01), Enright
patent: 4086632 (1978-04-01), Lions
patent: 4153874 (1979-05-01), Kaestner
patent: 4159088 (1979-06-01), Cosley
patent: 4312041 (1982-01-01), DeJonge
patent: 4325123 (1982-04-01), Graham et al.
patent: 4467429 (1984-08-01), Kendig
patent: 4536843 (1985-08-01), Lambregts
patent: 4642775 (1987-02-01), Cline et al.
patent: 4760530 (1988-07-01), Liden
patent: 4774670 (1988-09-01), Palmieri
patent: 4812990 (1989-03-01), Adams et al.
patent: 4827417 (1989-05-01), Berger et al.
Erzberger & Lee, "Constrained Optimum Trajectories With Specified Range," Journal of Guidance and Control, vol. 3, No. 1, pp. 78-85, Jan.-Feb. 1980.
Chakravarty, "4 D Fuel-Optimal Guidance in the Presence of Winds," Technical Information Service, American Institute of Aeronautics and Astronautics, No. 83-2242, pp. 584-592, 1983.
Woodburn, "Flying the Lean Machine Boeing 757," Aerospace, pp. 27-29, Jul.-Aug. 1984.
DeJonge and Syblon, "Applicant of Cost Index to Fleet Hub Operation," Technical Information Service, American Institute of Aeronautics and Astronautics, No. WA7-10:45, pp. 179-184 (believed to be published in 1985).
Tobias et al, "Mixing Four-Dimensional Equipped and Unequipped Aircraft in the Terminal Area," Journal of Guidance and Control, vol. 8, No. 3, pp. 296-303, May-Jun. 1985.
Burrows & Chakravarty, "Time-Controlled Aircraft Guidance in Uncertain Winds and Temperatures," Technical Information Service, American Institute of Aeronautics and Astronautics, No. WA7-11:45, pp. 191-197, (believed published in 1985).
Liden, "Practical Considerations in Optimal Flight Management Computations," Technical Information Service, American Institute of Aeronautics and Astronautics, No. TA1-9:30, pp. 675-681, (believed published in 1986).
Chakravarty, "Selection of an Optimal Cost Index for Airline Hub Operation," Journal of Guidance, vol. 8, No. 6, pp. 777-781, Nov.-Dec. 1985.
Black Thomas G.
Smiths Industries Aerospace & Defense Systems Inc.
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