The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
May. 23, 1997
Daniel H Cartmell, Bellevue, WA (US);
David B Borgens, Auburn, WA (US);
Henning Buus, Woodinville, WA (US);
Keith S Duffy, Woodinville, WA (US);
Mark E Gast, Seabrook, TX (US);
Neal V Huynh, Bellevue, WA (US);
David W Lochtie, Bellevue, WA (US);
Clifton A Piersbacher, Seattle, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A system for backdriving the flight deck controllers of a fly-by-wire aircraft that is under autopilot control to provide a pilot with tactile and visual feedback of autopilot activity. The system, distributed between the aircraft primary flight computers and the autopilot flight computer, uses actuators mechanically coupled to each flight deck controller to position the flight deck controller to mimic manual operation of the flight control surfaces. Additionally, the system allows smooth disengagement of the autopilot and transfer of the aircraft to pilot control when the pilot takes control of any flight deck controller by moving it from a backdrive system-commanded position by a predetermined displacement for a predetermined time.