An isotherm sensor tracks space vehicle temperatures by a thermal protection system (TPS) material during vehicle re-entry as a function of time, and surface recession through calibration, calculation, analysis and exposed surface modeling. Sensor design includes: two resistive conductors, wound around...http://www.google.com.au/patents/US8069001?utm_source=gb-gplus-sharePatent US8069001 - Thermal protection system ablation sensor
