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:
Nov. 02, 1976
Filed:
Mar. 17, 1975
Antonius A Lambregts, Renton, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
Signals representative of the acceleration of an aircraft due to the change in flight path angle are coupled through a high pass filter (washout circuit) to obtain a short term compensation signal (V.sub.comp) which signal is further coupled to a low pass filter which provides short term integration to obtain the compansation signal (.DELTA. V.sub.comp) representative of change in speed in response to change in flight path angle. These compensation signals (V.sub.comp) and (.DELTA. V.sub.comp) are summed respectively with signals representative of longitudinal acceleration (or thrust control damping) and air speed error (or thrust control reference) to inhibit short term thrust control of the aircraft due to small flight path angle perturbations thereby improving the manual path control handling quality and the stability of the aircraft by the automatic control system. A modification of the system is disclosed for avoiding sensor noise developed by the .alpha. (angle of attack) vane sensor by utilization of other inputs to the system signal processing.