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. 13, 2011
Filed:
Oct. 18, 2006
Ahmed A. Hassan, Mesa, AZ (US);
Bradley A. Osborne, Manchester, MO (US);
Scott Schwimley, Foristell, MO (US);
Garry Billman, Troy, MO (US);
Mary Billman, Legal Representative, Troy, MO (US);
Ahmed A. Hassan, Mesa, AZ (US);
Bradley A. Osborne, Manchester, MO (US);
Scott Schwimley, Foristell, MO (US);
Garry Billman, Troy, MO (US);
Mary Billman, legal representative, Troy, MO (US);
The Boeing Company, Chicago, IL (US);
Abstract
A system for reducing overall drag of a mobile platform includes a surface on which an airflow forms a boundary layer and a generally normal shockwave. The airflow is at a first velocity that is one of transonic and supersonic. An oscillating jet injects and extracts a jet flow through the surface. The jet flow is at a second velocity that is substantially less than the first velocity. A recirculation region is upstream of the normal shockwave and is disposed at least partially in the boundary layer. The recirculation region is established at least by the oscillating jet. A generally oblique wave is established by the recirculation region and weakens the normal shockwave to reduce the overall drag experienced by the surface.