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Effect of variable emittance coatings on the operation of a miniature loop heat pipe
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Swanson, Theodore Hess, Steve Ottenstein, Laura Darrin, Ann Douglas, Donya M. Ku, Jentung |
| Copyright Year | 2005 |
| Description | Abstract. As the size of spacecraft shrink to accommodate small and more efficient instruments, smaller launch vehicles, and constellation missions, all subsystems must also be made smaller. Under NASA NFL4 03-OSS-02, Space Technology-8 (ST 8), NASA Goddard Space Flight Center and Jet Propulsion Laboratory jointly conducted a Concept Definition study to develop a miniature loop heat pipe (MLHP) thermal management system design suitable for future small spacecraft. The proposed MLHP thermal management system consists of a miniature loop heat pipe (LHP) and deployable radiators that are coated with variable emittance coatings (VECs). As part of the Phase A study and proof of the design concept, variable emittance coatings were integrated with a breadboard miniature loop heat pipe. The miniature loop heat pipe was supplied by the Jet Propulsion Laboratory (PL), while the variable emittance technology were supplied by Johns Hopkins University Applied Physics Laboratory and Sensortex, Inc. The entire system was tested under vacuum at various temperature extremes and power loads. This paper summarizes the results of this testing and shows the effect of the VEC on the operation of a miniature loop heat pipe. |
| File Size | 10286800 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040171176 |
| Archival Resource Key | ark:/13960/t5fc01k9c |
| Language | English |
| Publisher Date | 2005-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Thermocouples Condensers Coatings Emittance Thermal Vacuum Tests Breadboard Models Heat Pipes Thermoelectric Cooling Space Technology Experiments Temperature Control Miniaturization Spacecraft Design Electrostatics Heat Transfer Chambers Satellite Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
