DAVID BEVAN
Engineers in Delaware
License number
Pennsylvania PE017142E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Delaware
Media, PA 19063
Media, PA 19063
Professional information
Propulsion System For V/Stol Aircraft
US Patent:
4358074, Nov 9, 1982
Filed:
May 24, 1979
Appl. No.:
6/042263
Inventors:
Allen H. Schoen - Woodbury NJ
John J. Schneider - Media PA
David Bevan - Media PA
Harold Rosenstein - Havertown PA
David R. Woodley - Media PA
John J. Schneider - Media PA
David Bevan - Media PA
Harold Rosenstein - Havertown PA
David R. Woodley - Media PA
Assignee:
The Boeing Company - Seattle WA
International Classification:
B64C 1502, B64C 2104, B64C 2900
US Classification:
244 124
Abstract:
A propulsion system for an aircraft having a fuselage and a wing with two nacelles disposed on opposite sides of the fuselage, each of the nacelles having a turbo fan therein with drive means connected thereto for air flow through the nacelle from a forward air inlet to air exit openings, the air flow within the nacelle divided into twi air streams, one of the air-streams being directed downwardly through a variable area forward chin nozzle provided with a cascade of vanes for directing the outflow in a desired direction with the other air stream exhausted through an aft nozzle of variable area at the aft outlet opening against a slotted flap system mounted aft of the aft nozzle against which the outflow from the aft nozzle is directed so that the two air streams provide pitch, roll and yaw control as well as balanced lift and propulsion utilizing controlled thrust modulation and vectoring for all regimes of flight from vertical takeoff and landing (VTOL) or short takeoff and landing (STOL) or a combination of these and conventional flight through a combination of nozzle area change and wing flap vectoring.
Radome For Aircraft
US Patent:
4380012, Apr 12, 1983
Filed:
Jul 17, 1981
Appl. No.:
6/284029
Inventors:
David Bevan - Media PA
James S. Yee - Seattle WA
Richard R. Pruyn - Valley Forge PA
James S. Yee - Seattle WA
Richard R. Pruyn - Valley Forge PA
Assignee:
The Boeing Company - Seattle WA
International Classification:
G09F 930
US Classification:
343705
Abstract:
A non-rotatable radar antenna installation for aircraft for providing 360. degree. azimuthal scanning, which includes a generally triangular radome carried by the aircraft, and three substantially planar radar antennas arranged in a triangular planform within the radome. 360. degree. azimuthal coverage is achieved by the sequential side-to-side scanning of the three antennas. The planform area of the triangular radome and consequently the drag and weight penalty of the radome upon the aircraft is substantially less than equivalent radar antenna installations of circular configuration.