Performance of multi-layer insulation for spacecraft instruments at cryogenic temperatures

Date

2016–07-10

Journal Title

Journal ISSN

Volume Title

Publisher

46th International Conference on Environmental Systems

Abstract

This paper reports on the effective emittance of various multi-layer insulation (MLI) configurations designed for insulating spacecraft instruments that operate at cryogenic temperatures. Different MLIs were designed and fabricated to insulate a representative spacecraft instrument geometry. Properties of the MLI that were varied include spacer material, total layers, seam length, and seam placement. The spacecraft test article temperature varied from 100 K to 150 K and the surrounding temperature varied from 200 K to 300 K. The effective emittance of each configuration was measured and is reported. Since the aim of this study is to improve MLI for real spacecraft instrument use, the ease of construction and integration of the various MLI designs is also discussed.

Description

United States
NASA JPL
Jet Propulsion Laboratory
108
ICES108: Thermal Control of Cryogenic Instruments and Optical Systems
Vienna, Austria
Colin H. Smith, Jet Propulsion Laboratory – California Institute of Technology, USA
Ian M. McKinley, Jet Propulsion Laboratory – California Institute of Technology, USA
Perry G. Ramsey, Jet Propulsion Laboratory – California Institute of Technology, USA
The 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.
Jose I. Rodriguez, Jet Propulsion Laboratory – California Institute of Technology, USA
The 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.

Keywords

Multi-layer insulation, Cryogenic insulation, Cryogenic thermal control, Instrument thermal control

Citation