Measuring and testing – Wind tunnel: aerodynamic wing and propeller study
Reexamination Certificate
2007-12-04
2007-12-04
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Wind tunnel: aerodynamic wing and propeller study
C073S117020, C073S117020, C073S118040, C073S204180, C073S204260
Reexamination Certificate
active
11076274
ABSTRACT:
A system is provided for controlling boundary layer shear stress adjacent a surface over which a fluid stream has been established. The system comprises a boundary layer control device adapted for altering at least one flow characteristic within a boundary layer in a selected region of the surface. The system further comprises a shear stress measurement system comprising a hot film sensor arrangement having at least one hot film sensor element appliable to the surface in the selected region. The at least one hot film sensor element is connected to an anemometer circuit configured to provide a sensor signal corresponding to heat transfer from the associated hot film sensor to the fluid stream. The system also comprises a control module in communication with the anemometer arrangement and the boundary layer control device. The control module is adapted for receiving and processing sensor signals signal from the anemometer circuit and for providing input signals to the boundary layer control device.
REFERENCES:
patent: 4229725 (1980-10-01), Reilly
patent: 4563684 (1986-01-01), Maris
patent: 4649387 (1987-03-01), Maris
patent: 4727751 (1988-03-01), Holmes et al.
patent: 4848153 (1989-07-01), Stack et al.
patent: 4932610 (1990-06-01), Maestrello
patent: 4936146 (1990-06-01), Stack et al.
patent: 5074147 (1991-12-01), Sarma
patent: 5209111 (1993-05-01), Agarwal et al.
patent: 5218863 (1993-06-01), Mangalam
patent: 5299455 (1994-04-01), Mangalam
patent: 5600060 (1997-02-01), Grant
patent: 5796612 (1998-08-01), Palmer
patent: 5890681 (1999-04-01), Meng
patent: 6024119 (2000-02-01), Kirschner
patent: 6134959 (2000-10-01), Mangalam et al.
patent: 6169496 (2001-01-01), Martin et al.
patent: 6253126 (2001-06-01), Palmer
patent: 6371414 (2002-04-01), Truax et al.
patent: 6390417 (2002-05-01), Yoshino
patent: 6424923 (2002-07-01), Huyer et al.
patent: 6732579 (2004-05-01), Keith et al.
S. Mangalam, “Real-Time Extraction of Hydrodynamic Flow Characteristics Using Surface Signatures”,Proceedings 13thInternational Symposium on Unmanned Untethered Submersible Technology, Aug. 24-27, 2003.
S. Mangalam, “Phenomena-Based Real-Time Aerodynamic Measurement System (PRAMS)”,2003 IEEE Aerospace Conference Proceedings, Mar. 8-15, 2003.
PCT/US05/08145, Sep. 14, 2006, International Search Report, 6 pgs.
Hunton & Williams LLP
Kirkland, III Freddie
Lefkowitz Edward
Tao of Systems Integration, Inc.
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