James Francis Mckinnon

US Patent:

57715793, Jun 30, 1998

Filed:

Sep 24, 1996

Appl. No.:

8/719099

Inventors:

Shahram Farhangi - Woodland Hills CA
James M. McKinnon - Moorpark CA

Assignee:

Boeing North American, Inc. - Seal Beach CA

International Classification:

F02K 900

US Classification:

2989001

Abstract:

This invention is related to a method of designing and fabricating an injector in which the oxidizer tubes are directly bonded to an injector face plate. This will eliminate the wandering of the oxtubes. This design also minimizes the uncooled solid surface face plate area exposed to high heat flux. The oxidizer tubes are designed as an integral part of the oxidizer tube array structure eliminating the leak path between the two propellants (fluids), and the fuel injection passages are integral to the face plate. Therefore reducing the number of parts significantly which reduces the manufacturing and inspection cycle time. The fabrication process can easily be automated to reduce fabrication costs.

US Patent:

62535390, Jul 3, 2001

Filed:

Jul 7, 1999

Appl. No.:

9/348402

Inventors:

Shahram Farhangi - Woodland Hills CA
James M. McKinnon - Moorpark CA
Steven C. Fisher - Simi Valley CA
James J. Fang - Chatsworth CA

Assignee:

Boeing North America Inc.

International Classification:

F02K 972

US Classification:

60211

Abstract:

A method for using an injector to combust a first fluid and a second fluid comprises a directing the first fluid step and a shrouding step. The directing step comprises directing the first fluid in a central coaxial flow generally perpendicularly through a first fluid passage that extends through an injector faceplate, and into a combustion chamber. In the shrouding step, a length of the central coaxial flow adjacent to the injector faceplate is shrouded with an outer coaxial flow. The shroud is formed by directing a portion of the second fluid through an annular/conical passage in the injector faceplate that surrounds the first fluid passage. The annular/conical passage is arranged such that the outer coaxial flow is directed radially inward and impinges on the central coaxial flow a distance after the central coaxial flow has exited the first fluid passage and after the outer coaxial flow has exited the annular/conical passage. Transpiration of either of the fluids through the injector faceplate permits combustion a higher temperatures. The combustion at higher temperatures permits the use of precombusted first and/or second fluids.