U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method of and apparatus for controlling the boundary layer flow over the surface of a body

Patent 4516747 Issued on May 14, 1985. Estimated Expiration Date: Icon_subject August 2, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3362663

Inventor

Assignee

Application

No. 06/519689 filed on 08/02/1983

US Classes:

244/204, By controlling boundary layer244/130Aerodynamic resistance reducing

Examiners

Primary: Barefoot, Galen L.

Attorney, Agent or Firm

International Classes

F15D 1/12 (20060101)
F15D 1/00 (20060101)
B64C 23/00 (20060101)

Foreign Application Priority Data

1982-08-03 DE

Abstract

In controlling the boundary layer of flow over the surface of a body, for reducing resistance and impeding flow separation, a sensor element in the surface measures certain flow values in the boundary layer. The measured values are conveyed to an analyzer control circuit which, in turn, conveys a signal to an active vibration transmitter in the surface of the body for providing the required control.

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