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. 18, 1984
Filed:
Aug. 23, 1982
Kenneth W Porter, Mercer Island, WA (US);
Douglas McLaren, Seattle, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
In an aircraft, a jet engine is carried by a frame (4), and the engine core casing (18B) acts as a beam. An engine core cowl (30) is made of a composite material that maintains structural strength within a given temperature range. The outer surface of the cowl (30) is cooled by the ambient airstream. The sidewall (32) of the cowl (30) is stiffened by a plurality of beams on its inner surface, preferably including axial beams (34) and circumferential beams (38). The beams (34,38) are tubular and have interconnecting passageways (37,39). The cowl (30) is connected to and structurally integrated with the engine casing. Cooling air is aspirated through the passageways (37,39) to maintain the inner portions of the beams (34,38) at essentially the same temperature as the outer surface of the sidewall (32). The flow of cooling air is metered. The cowl (30) acts as a beam and shares bending loads with the engine-casing.