NASA has a serious problem with ice that forms on the cryogenic-filled Space Shuttle External Tank (ET) that could
endanger the crew and vehicle. This problem has defied resolution in the past. To find a solution, a cooperative
agreement was developed between NASA-Kennedy Space Center (KSC) and the U.S. Army Tank-automotive and
Armaments Research, Development & Engineering Center (TARDEC). This paper describes the need, initial
investigation, solution methodology, and some results for a mobile near-infrared (IR) ice detection and measurement
system developed by MDA of Canada and jointly tested by the U.S. Army TARDEC and NASA. Performance results
achieved demonstrate that the pre-launch inspection system has the potential to become a critical tool in addressing
NASA's ice problem.