STEPHEN CRAIG DARFLER
Pilots at Cristy Way, Hayward, CA
License number
California A0430485
Issued Date
Mar 2016
Expiration Date
Mar 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
4573 Cristy Way, Hayward, CA 94546
Professional information
High Thermal Conductivity Non-Metallic Honeycomb
US Patent:
5498462, Mar 12, 1996
Filed:
Apr 1, 1994
Appl. No.:
8/221833
Inventors:
Stephen C. Darfler - Castro Valley CA
Assignee:
Hexcel Corporation - Pleasanton CA
International Classification:
B32B 312
US Classification:
428116
Abstract:
Thermally conductive non-metallic honeycomb structures are provided as well as a novel co-corrugation process for their production. The thermal conductivity of the non-metallic honeycomb structures is increased by incorporating unidirectional thermally conductive fibers in the corrugated laminate sheets used to form the honeycomb. Thermally conductive fibers are integrated in the laminate sheets as a unidirectional fiber prepreg which minimizes the number of broken fibers and allows controlled directional heat conductance through the honeycomb structure.
High Thermal Conductivity Non-Metallic Honeycomb With Optimum Pitch Fiber Angle
US Patent:
5470633, Nov 28, 1995
Filed:
Oct 14, 1993
Appl. No.:
8/136958
Inventors:
Stephen C. Darfler - Castro Valley CA
Assignee:
Hexcel Corporation - Pleasanton CA
International Classification:
B32B 312
US Classification:
428116
Abstract:
A non-metallic honeycomb structure wherein the thermal conductivity of the structure is increased by incorporating high thermal conductivity pitch-based carbon fibers into the non-metallic resin matrix. In addition to increasing thermal conductivity, the pitch-based carbon fibers are utilized to provide controlled directional heat conductance through the honeycomb structure. In one preferred embodiment, the pitch-based fibers are oriented to extend at an angle of plus or minus 55 to 60 degrees relative to the lengthwise direction of the honeycomb structure to provide optimum performance characteristics at a reduced cost.
High Thermal Conductivity Non-Metallic Honeycomb With Laminated Cell Walls
US Patent:
5466507, Nov 14, 1995
Filed:
Oct 14, 1993
Appl. No.:
8/136957
Inventors:
Stephen C. Darfler - Castro Valley CA
Assignee:
Hexcel Corporation - Pleasanton CA
International Classification:
B32B 312
US Classification:
428116
Abstract:
A non-metallic honeycomb structure wherein the thermal conductivity of the structure is increased by incorporating high thermal conductivity pitch-based carbon fibers into the non-metallic resin matrix. In addition to increasing thermal conductivity, the pitch-based carbon fibers are utilized to provide controlled directional heat conductance through the honeycomb structure. In a preferred exemplary embodiment, the cell walls are formed from a plurality of non-metallic unidirectional fabric layers, at least one of which consists essentially of unidirectionally oriented high thermal conductivity fibers.
High Thermal Conductivity Triaxial Non-Metallic Honeycomb
US Patent:
5527584, Jun 18, 1996
Filed:
Oct 19, 1993
Appl. No.:
8/139309
Inventors:
Stephen C. Darfler - Castro Valley CA
Carla Ahlstrom - Oakland CA
Mark Caldwell - Livermore CA
Carla Ahlstrom - Oakland CA
Mark Caldwell - Livermore CA
Assignee:
Hexcel Corporation - Pleasanton CA
International Classification:
B32B 312
US Classification:
428116
Abstract:
A non-metallic honeycomb structure wherein the thermal conductivity of the structure is increased by incorporating high thermal conductivity pitch-based carbon fibers into the non-metallic resin matrix. In addition to increasing thermal conductivity, the pitch-based carbon fibers are utilized to provide controlled directional heat conductance through the honeycomb structure.