STEPHEN LEWIS GUYMON
Pilots at Northridge St, Mesa, AZ

License number
Arizona A0743571
Issued Date
Sep 2016
Expiration Date
Sep 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
3013 E Northridge St, Mesa, AZ 85213

Professional information

Stephen Guymon Photo 1

Composite Member Having Increased Resistance To Delamination And Method Of Making Same

US Patent:
6544366, Apr 8, 2003
Filed:
Jul 5, 2001
Appl. No.:
09/899619
Inventors:
Brian Koorosh Hamilton - Mesa AZ
Stephen L. Guymon - Mesa AZ
Assignee:
McDonnell Douglas Corporation - St. Louis MO
International Classification:
B32B 3114
US Classification:
156184, 156172, 156174, 264241, 264257, 2642711, 2642791, 428192, 428194
Abstract:
A composite member having increased resistance to delamination includes a reinforcing wrap of fiber-matrix composite material which is encircled about the member so that the edge surfaces of the member are covered by the wrap. The wrap includes fibers which are oriented from about -60° to about +60° relative to the direction along which the reinforcing wrap is wrapped about the member. The fibers of the reinforcing wrap impart increased third-axis or Z-direction strength at the edges of the member where interlaminar tensile stresses are greatest.


Stephen Guymon Photo 2

Disbond Resistant Composite Joint And Method Of Forming

US Patent:
7303374, Dec 4, 2007
Filed:
Mar 8, 2005
Appl. No.:
11/074968
Inventors:
Jian Li - Gilbert AZ, US
Stephen L. Guymon - Mesa AZ, US
Assignee:
The Boeing Company - Chicago IL
International Classification:
F01D 17/18
US Classification:
416 61, 416229 A, 298896, 2988971
Abstract:
A disbond resistant multi-laminate composite product is provided having, a first member; a second member of composite material bonded to the first member; a third member of composite material bonded to at least the second member and being so positioned and arranged such that when the second and third members are stressed at least a portion of the third member will have higher stress than the adjacent second member. The third member preferably has a terminal portion adjacent the second member in which terminal portion the strain energy release rate is higher than in the adjacent second member when the second and third members are stressed. The second and third members are preferably so positioned and arranged such that the third member initiates delamination from the second member before the second member initiates delamination from the first member when the first, second and third members are under stress. A stress level indicator is preferably associated with the third member to measure the stress levels in the third member.


Stephen Guymon Photo 3

Contoured Flexure Strap For Helicopter Rotor System

US Patent:
5820344, Oct 13, 1998
Filed:
Jun 27, 1997
Appl. No.:
8/884386
Inventors:
Brian K. Hamilton - Mesa AZ
Stephen L. Guymon - Mesa AZ
Murray J. Hines - Mesa AZ
Thu N. Vu - Tempe AZ
Assignee:
McDonnell Douglas Corporation - St. Louis MO
International Classification:
F04D 2936
US Classification:
416134A
Abstract:
The present invention relates to an improved helicopter rotor system including a contoured flexure strap having a simplified geometrical configuration. The flexure strap serves to join the rotary hub assembly with the rotor blades and is formed of fiberglass. The primary load carrying fibers of the flexure strap preferably extend in the same direction as the spanwise axis of the flexure strap in order to withstand the centrifugal forces acting on the strap. The inboard end portion of the flexure strap includes two separate ends, with one of the ends extending in a vertically upward direction and the other end in a vertically downward direction. This allows the ends of flexure straps positioned on opposite sides of the rotary hub assembly to overlap one another and be retained in place by a single pin and bolt assembly. A cloth wrap of composite matrix material surrounds portions of the flexure strap to provide redundancy which prevents the fibers in the flexure strap from delamination when subjected to forces arising during operation of the helicopter.


Stephen Guymon Photo 4

Fiber Matrix For A Geometric Morphing Wing

US Patent:
7195210, Mar 27, 2007
Filed:
Feb 3, 2003
Appl. No.:
10/357022
Inventors:
Brian K. Hamilton - Mesa AZ, US
Stephen Lewis Guymon - Mesa AZ, US
Gregory E. Dockter - Mesa AZ, US
Ahmed A. Hassan - Mesa AZ, US
Assignee:
The Boeing Company - Chicago IL
International Classification:
B64C 3/46
US Classification:
244219, 244134 A
Abstract:
An airfoil member () includes a geometric morphing device (). The geometric morphing device () has an inflatable member (). The inflatable member () has an exterior wall () and multiple inflated states. The exterior wall () includes a layer with one or more fibers embedded therein. The exterior wall () controls size, shape, and expansion ability of the geometric morphing device ().


Stephen Guymon Photo 5

Composite Member Having Increased Resistance To Delamination And Method Of Making Same

US Patent:
6277463, Aug 21, 2001
Filed:
Aug 28, 1998
Appl. No.:
9/143638
Inventors:
Brian Koorosh Hamilton - Mesa AZ
Stephen L. Guymon - Mesa AZ
Assignee:
McDonnell Douglas Corporation - St. Louis MO
International Classification:
B32B 512
US Classification:
428106
Abstract:
A composite member having increased resistance to delamination includes a reinforcing wrap of fiber-matrix composite material which is encircled about the member so that the edge surfaces of the member are covered by the wrap. The wrap includes fibers which are oriented from about -60. degree. to about +60. degree. relative to the direction along which the reinforcing wrap is wrapped about the member. The fibers of the reinforcing wrap impart increased third-axis or Z-direction strength at the edges of the member where interlaminar tensile stresses are greatest.