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. 01, 1981
Filed:
Mar. 28, 1980
Lana M Couch, Mathews, VA (US);
Abstract
The invention relates to a device which changes the Mach number capability of a wind tunnel without permanently altering the existing nozzle of the tunnel. An insert (14) is removably attached to the wall (17) of the existing nozzle expansion area (22) thereby creating a second minimum section (15) upstream of the model test section (21). The added insert (14) may be removed without complicated and expensive changes to the basic wind tunnel. In the embodiment illustrated in FIG. 2, a removable insert (25) is disposed within wind tunnel nozzle walls (17) with a portion of the flow boundary layer being bled off from the tunnel via passageway (29) and tunnel exit (28) to thereby reduce the extent of separated flow normally occuring upstream of the insert contraction section.