DAVID THOMAS BIRKENSTOCK
Pilots at Big Boulder Rd, Herndon, VA
License number
Virginia A2708804
Issued Date
Oct 2016
Expiration Date
Apr 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
13577 Big Boulder Rd, Herndon, VA 20171
Professional information
System And Method For Drag Reduction
US Patent:
2012017, Jul 12, 2012
Filed:
Jan 6, 2012
Appl. No.:
13/344673
Inventors:
David T. BIRKENSTOCK - Herndon VA, US
International Classification:
B62D 35/00, B64C 1/38
US Classification:
2961815, 244130
Abstract:
A system and method for drag reduction allows thrust output, fuel efficiency or both to be maximized. Specifically, a rear portion of a body or motor vehicle may be modified to increase thrust output, fuel efficiency or both by creating a stagnation area, a suction inlet and a convex cusp area formed on the rear portion of the motor vehicle. Increasing the concavity or camber or sharpness of the radius of the stagnation area results in greater local pressure coefficient, which results in greater thrust output. The size and shape of the suction inlet and the convex cusp area will also have an effect on thrust output and fuel efficiency. A width and volume of an airplane fuselage may be increased.
Boundary Layer Control System And Methods Thereof
US Patent:
2009028, Nov 26, 2009
Filed:
May 26, 2009
Appl. No.:
12/471991
Inventors:
David Birkenstock - Herndon VA, US
International Classification:
B64C 21/04
US Classification:
244207
Abstract:
An airfoil boundary layer control system may be provided. The airfoil boundary layer control system may include at least one airfoil that may include a first surface and a second surface coupled together at a leading edge and a trailing edge; at least one hollow chamber defined within the at least one airfoil; and an aperture defined in the airfoil and positioned substantially near the trailing edge, the aperture coupled in flow communication with the at least one hollow chamber; a pressure source coupled in flow communication with the at least one hollow chamber.
System And Method For Drag Reduction
US Patent:
8113466, Feb 14, 2012
Filed:
Sep 16, 2008
Appl. No.:
12/211782
Inventors:
David T. Birkenstock - Herndon VA, US
International Classification:
B64C 1/38
US Classification:
244130, 244208
Abstract:
A system and method for drag reduction allows thrust output, fuel efficiency or both to be maximized. Specifically, a rear portion of a body or motor vehicle may be modified to increase thrust output, fuel efficiency or both by creating a stagnation area, a suction inlet and a convex cusp area formed on the rear portion of the motor vehicle. Increasing the concavity or camber or sharpness of the radius of the stagnation area results in greater local pressure coefficient, which results in greater thrust output. The size and shape of the suction inlet and the convex cusp area will also have an effect on thrust output and fuel efficiency. A width and volume of an airplane fuselage may be increased.
Apparatus, System And Method For Drag Reduction
US Patent:
2010007, Apr 1, 2010
Filed:
Sep 29, 2009
Appl. No.:
12/568779
Inventors:
David Birkenstock - Herndon VA, US
International Classification:
B64C 21/06, B64C 9/00
US Classification:
244209, 244213
Abstract:
An apparatus, method and system for combining aerodynamic design with engine power to increase synergy between the two and increase climb performance, engine-out performance, and fuel efficiency for a variety of aircraft or the like.
Apparatus System And Method For Drag Reduction
US Patent:
2009019, Aug 6, 2009
Filed:
Dec 22, 2005
Appl. No.:
11/314525
Inventors:
David Birkenstock - Herndon VA, US
International Classification:
B64C 3/14, B64C 1/00
US Classification:
244198, 244 34 R
Abstract:
An apparatus, method and system for combining aerodynamic design with engine power to increase synergy between the two and increase climb performance, engine-out performance, and fuel efficiency for a variety of aircraft or the like.