An Active Heater Control Concept to Meet IXO Type Mirror Module Thermal-Structural Distortion Requirement

TBMG-16134

04/01/2013

Abstract
Content

Flight mirror assemblies (FMAs) of large telescopes, such as the International X-ray Observatory (IXO), have very stringent thermal-structural distortion requirements. The spatial temperature gradient requirement within a FMA could be as small as 0.05 °C. Conventionally, heaters and thermistors are attached to the stray light baffle (SLB), and centralized heater controllers (i.e., heater controller boards located in a large electronics box) are used. Due to the large number of heater harnesses, accommodating and routing them is extremely difficult. The total harness length/mass is very large. This innovation uses a thermally conductive pre-collimator to accommodate heaters and a distributed heater controller approach. It minimizes the harness length and mass, and reduces the problem of routing and accommodating them.

Meta TagsDetails
Citation
"An Active Heater Control Concept to Meet IXO Type Mirror Module Thermal-Structural Distortion Requirement," Mobility Engineering, April 1, 2013.
Additional Details
Publisher
Published
Apr 1, 2013
Product Code
TBMG-16134
Content Type
Magazine Article
Language
English