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:
Mar. 21, 2006
Filed:
Feb. 27, 2004
Jeffrey M. Hein, Tempe, AZ (US);
Nicholas A. Williams, Phoenix, AZ (US);
Yogendra Y. Sheoran, Scottsdale, AZ (US);
Cecilia S. Lam, Scottsdale, AZ (US);
Ora M. Cowans, Los Angeles, CA (US);
Benjamen K. Higuera, Oracle, AZ (US);
Andrew S. Peduchi, Tucson, AZ (US);
Ravisha P. Sellahewa, Los Gatos, CA (US);
Daniel Brown, Suonse, AZ (US);
Jeffrey M. Hein, Tempe, AZ (US);
Nicholas A. Williams, Phoenix, AZ (US);
Yogendra Y. Sheoran, Scottsdale, AZ (US);
Cecilia S. Lam, Scottsdale, AZ (US);
Ora M. Cowans, Los Angeles, CA (US);
Benjamen K. Higuera, Oracle, AZ (US);
Andrew S. Peduchi, Tucson, AZ (US);
Ravisha P. Sellahewa, Los Gatos, CA (US);
Daniel Brown, Suonse, AZ (US);
Honeywell International, Inc., Morristown, NJ (US);
Abstract
An inlet door assembly and method for reducing noise from an auxiliary power unit (APU) contained within an aircraft housing is provided. The inlet assembly includes an inlet duct, an actuator, and a door. The inlet duct is configured to extend from the auxiliary power unit to the aircraft housing and has a sidewall that defines a flow passage through which APU noise propagates. The actuator is disposed at least partially within the inlet duct. The door coupled to the actuator. The actuator is also configured to selectively rotate the door between at least a first position, in which at least a portion of the door deflects APU noise in a first direction, and a second position, in which at least a portion of the door deflects the APU noise in a second direction.