Novel Materials for In-Situ Ablation Sensing

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-12-C-0011
Agency Tracking Number: F10B-T04-0217
Amount: $99,996.00
Phase: Phase I
Program: STTR
Awards Year: 2012
Solicitation Year: 2010
Solicitation Topic Code: AF10-BT04
Solicitation Number: 2010.B
Small Business Information
2760 Beverly Dr., #4, Aurora, IL, 60502-
DUNS: 927258277
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Donald Yuhas
 (630) 236-5901
Business Contact
 Donald . Yuhas
Title: President
Phone: (630) 236-5901
Research Institution
 University of Texas at Austin
 Joseph H Koo
 Dept of Mechical Engineering
1 University Station C2200
Austin, TX, 78712-0292
 (512) 471-1131
 Nonprofit college or university
ABSTRACT: In order to achieve precise guidance, navigation and control in re-entry vehicles, aerodynamic shape must be accurately known throughout the flight trajectory. For this Phase I program an ultrasonic-based technique for real-time, non-intrusive (5 KHz) measurement of recession during ablation will be developed. The system combines the elements of ultrasonic thickness gauging technology with ultrasonic thermometry techniques. Novel, independent temperature measurement methods and analysis techniques will be formulated to separate variations attributed to thickness changes from those attributed to temperature changes. Recession, or wall thickness, changes can be measured using sensors located remotely from the ablating surface without modifying the thermal protective system in any way. The measurement concept will be verified through a series of ablation tests where real-time recession data will be quantitatively compared to post-ablation analysis. The instrumentation has low power consumption and can be made sufficiently compact for potential in-flight measurement. BENEFIT: Quantitative real-time recession sensing has application in TPS evaluation for both ground-based testing and in-flight systems. Military markets include NASA, Air Force, Navy and Army. In addition to hypersonics applications, there are also potential applications in combustion research, directed energy research and health monitoring.

* Information listed above is at the time of submission. *

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