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:
Jan. 01, 2013
Filed:
Dec. 07, 2006
John S. Chapkovich, Iii, Derby, CT (US);
Henry E. Voegeli, Newtown, CT (US);
Nathan C. Blair, Milford, CT (US);
Jeffrey A. Math, Wallingford, CT (US);
John S. Chapkovich, III, Derby, CT (US);
Henry E. Voegeli, Newtown, CT (US);
Nathan C. Blair, Milford, CT (US);
Jeffrey A. Math, Wallingford, CT (US);
Sikorsky Aircraft Corporation, Stratford, CT (US);
Abstract
An InfraRed Suppression System (IRSS) includes a double-walled exhaust duct and double walled septum. The double walled structure provides a flow path for secondary (non-exhaust gas) cooling air flow to slots along the surfaces exposed to exhaust gases. Exhaust gas flow past these slots draws cooling air across the duct and septum surfaces. This flow cools the surfaces close to the slots and mixes with exhaust gasses downstream to cool the exhaust plume. The septum in the shape of a helix rotating 360° fully blocks line-of-sight to the turbine exit from the aft of the aircraft. The exhaust duct is intended to be shrouded by an aerodynamic fairing which provides an aerodynamic contour which minimizes aerodynamic impact on the aircraft.