1. AAE450 Senior Spacecraft Design Rick Hutchings Week 10: March 29 th, 2007 Thermal Control Final Presentation Slides 1 st Draft Hutchings, 1

2. AAE450 Senior Spacecraft Design Thermal Control Active Thermal Control System –Heat acquisition –Heat exchangers and coldplates –Heat transport –Plumbing, Pumps and Valves –Heat rejection –Heat sink (radiators) Passive Thermal Control System –MLI (Multi-Layer Insulation) Hutchings, 2

3. AAE450 Senior Spacecraft Design Insulation Keep fuel at storable temperatures –LOX – 90K –LH 2 – 20K External Tanks –Spray-On Foam Insulation (SOFI) Made of a Super Lightweight Ablator Lightweight and Proven to work High strength aramid honeycomb LH 2 and LOX Tanks –MLI 45 layers to decrease heat loss and keep mass low Hutchings, 3 MLI

4. AAE450 Senior Spacecraft Design References 1)Fischer, Mark. Thermal Control. Feb 1995. University of Texas. 21 Jan 2007. 2)Larson, Wiley and Pranke, Linda. Human Spaceflight Mission Analysis and Design. St. Louis: McGraw-Hill Companies (Pg. 513-537) 3)“Project Legend.” Spring 2005 Purdue University. 5 Jan 2007 (Pg. 285 289) <https://engineering.purdue.edu/AAE/Academics/Courses/ aae450/2005/spring> 4)Gilmore, David G. Spacecraft Thermal Control Handbook. California: The Aerospace Corporation 5)Martin, J.J. and Hastings, L. Large-Scale Liquid Hydrogen Testing of a Variable Density Multilayer Insulation with a Foam Substrate. June 2001. NASA 6)NASA Facts. External Tank Return to Flight Focus Area Thermal Protection System. August 2004. 7)http://www.hexcel.com/NR/rdonlyres/B5257016-0FEE-4F45-956D- F5DBCA3A7CFA/0/HEXWEBA1A10eu4PP.pdf Rick Hutchings - 4