Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Reexamination Certificate
2011-01-11
2011-01-11
Barefoot, Galen (Department: 3643)
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
Reexamination Certificate
active
07866609
ABSTRACT:
Passive removal of suction air for producing a laminar flow, and associated systems and methods are disclosed. One such method includes forming a laminar flow region over an external surface of an aircraft by drawing air through the external surface and into a plenum. The method can further include passively directing the air from the plenum overboard the aircraft. For example, the air can be passively directed to a region external to the aircraft having a static pressure lower than a static pressure in the plenum, as a result of the motion of the aircraft. Flows from different sections of the external surface can be combined in a common plenum, and the corresponding massflow rates can be controlled by the local porosity of the external surface.
REFERENCES:
patent: 2646945 (1953-07-01), Perry
patent: 2650781 (1953-09-01), Taylor
patent: 2751168 (1956-06-01), Stalker
patent: 2833492 (1958-05-01), Fowler
patent: 2971331 (1961-02-01), Silverman et al.
patent: 3430640 (1969-03-01), Lennard
patent: 3578265 (1971-05-01), Patierno et al.
patent: 3664612 (1972-05-01), Skidmore et al.
patent: 3941336 (1976-03-01), Nangia
patent: 3951360 (1976-04-01), Anxionnaz
patent: 4000869 (1977-01-01), Wong et al.
patent: 4025008 (1977-05-01), Peikert
patent: 4114836 (1978-09-01), Graham et al.
patent: 4132240 (1979-01-01), Frantz
patent: 4314341 (1982-02-01), Kivela
patent: 4381017 (1983-04-01), Bissinger
patent: 4575030 (1986-03-01), Gratzer
patent: 4641678 (1987-02-01), Haas et al.
patent: 4749151 (1988-06-01), Ball et al.
patent: 4813631 (1989-03-01), Gratzer
patent: 4865268 (1989-09-01), Tracksdorf
patent: 5078341 (1992-01-01), Bichler et al.
patent: 5263667 (1993-11-01), Horstman
patent: 5313700 (1994-05-01), Dorman
patent: 5348256 (1994-09-01), Parikh
patent: 5490644 (1996-02-01), Koncsek et al.
patent: 5917286 (1999-06-01), Scholl et al.
patent: 6027078 (2000-02-01), Crouch et al.
patent: 6276636 (2001-08-01), Krastel
patent: 6634595 (2003-10-01), Koncsek et al.
patent: 6834830 (2004-12-01), Fujino
patent: 6969029 (2005-11-01), Crouch et al.
patent: 7093792 (2006-08-01), Fujino et al.
patent: 7100875 (2006-09-01), Shmilovich et al.
patent: 7152829 (2006-12-01), Bertolotti
patent: 2004/0129839 (2004-07-01), Patel et al.
patent: 2007/0241229 (2007-10-01), Silkey et al.
patent: 2008/0023589 (2008-01-01), Miles et al.
patent: 2008/0096045 (2008-04-01), Fairbourn et al.
patent: 2008/0265100 (2008-10-01), Crouch et al.
patent: 19938317 (2001-02-01), None
patent: 0679572 (1995-11-01), None
patent: 1081332 (2001-03-01), None
patent: 1167187 (2002-01-01), None
patent: 2783885 (2000-03-01), None
patent: 2402196 (2004-12-01), None
International Search Report and Written Opinion, International Patent Application No. PCT/US2008/064725, Applicant: The Boeing Company; mailed May 23, 2008, 14 pages.
Crouch, J.D. et al., “Variable N-Factor Method for Transition Prediction in Three-Dimensional Boundary Layers”, pp. 211-216, AIAA Journal, vol. 38, No. 2, Feb. 2000.
Crouch, J.D., “Receptivity of Three-Diminsional Boundary Layers”, 10 pgs, AIAA 93-0074, 31st Aerospace Sciences Meeting & Exhibit, Jan. 1993, Reno, NV.
Radeztsky, Jr., R.H. et al., “Effect of Micron Sized Roughness on Transition in Swept-Wing Flows”, 14 pgs, AIAA 93-0076, 31st Aerospace Sciences Meeting & Exhibit, Jan. 1993, Reno, NV.
Schrauf, G., “Status and perspectives of laminar flow”, pp. 639-644, The Aeronautical Journal, vol. 109, No. 1102, Dec. 2005.
Barefoot Galen
Perkins Coie LLP
The Boeing Company
LandOfFree
Passive removal of suction air for laminar flow control, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Passive removal of suction air for laminar flow control, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive removal of suction air for laminar flow control, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2691563