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. 31, 1992
Filed:
Aug. 09, 1990
James D McLean, Seattle, WA (US);
Peter P Sullivan, Renton, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A wind tunnel having a test section and a fan section, interconnected by two passageways to form a recirculating air flow through said sections. There is a diffuser immediately downstream of the test section, and a second diffuser immediately downstream of the fan section. Each diffuser has an intermediate flow section where the side wall extends radially outwardly in a downstream direction at a relatively sharp angle. At the upstream end of the intermediate section there is a peripheral suction slot to draw in boundary layer air, and a by-pass passageway to discharge the air tangentially in a downstream location of the diffuser. This enables a substantial reduction in air velocity in a relatively short axial length.