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:
Sep. 13, 2011
Filed:
May. 29, 2008
Peter Mark Anderson, Georgetown, CA;
Karen Hosler, Campbellville, CA;
Greg Chapman, Scottsdale, AZ (US);
Wai Pak Wong, Cerritos, CA (US);
Peter Mark Anderson, Georgetown, CA;
Karen Hosler, Campbellville, CA;
Greg Chapman, Scottsdale, AZ (US);
Wai Pak Wong, Cerritos, CA (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Methods and apparatus are provided controlling aircraft cabin pressure, and more specifically engine bleed air manifold pressure, during aircraft descent. An aircraft engine bleed air manifold control pressure setpoint is to either a descent pressure setpoint or a cruise pressure setpoint by determining a rotational speed of an aircraft engine component, determining a component speed setpoint value, and determining aircraft vertical speed. The engine bleed air manifold control pressure setpoint is set to the descent pressure setpoint if either the determined rotational speed of the aircraft engine component is below the component speed setpoint value or the aircraft vertical speed is less than a predetermined vertical speed value.