A nonlinear optimization approach for disturbance rejection in flexible space structures

1990 ◽  
Author(s):  
ALEXANDER PARLOS ◽  
JOHN SUNKEL
Keyword(s):  
Nonlinear Optimization ◽  
Disturbance Rejection ◽  
Space Structures ◽  
Optimization Approach ◽  
Flexible Space Structures

Optimal acceleration profile for flexible space structures

1994 ◽  
Author(s):  
Hironori Fujii ◽  
Masayuki Nakagawa ◽  
Hirofumi Hatakenaka
Keyword(s):  
Space Structures ◽  
Flexible Space Structures ◽  
Acceleration Profile

Carbon Fiber Reinforced Rigidizable Space Structures

2005 ◽  
Vol 888 ◽  
Author(s):  
Stephen Andrew Sarles ◽  
Todd Bullions ◽  
Thompson Mefford ◽  
Judy Riffle ◽  
Don Leo
Keyword(s):  
Carbon Fiber ◽  
Temperature Control ◽  
Pi Controller ◽  
Space Structures ◽  
Heating Process ◽  
Thermosetting Resin ◽  
Resistive Heating ◽  
Flexible Space Structures ◽  
Material Stiffness ◽  
Reinforcing Material

ABSTRACTIn attempts to provide an active solution for the rigidization of flexible space structures, internal resistive heating is applied to a novel thermosetting resin. Carbon-fiber tow coated in U-Nyte Set 201A, which cures at ∼150°C, was heated by passing electric current through the reinforcing material. Using a proportional-integral (PI) controller, precise temperature control of the heating process was established. Samples cured via controlled internal resistive heating were heated to 160°C and underwent material consolidation in less than 7 minutes. A change in material stiffness was measured to be almost two orders of magnitude greater than that of an uncured material.

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