Page 179

Heating Rate Sensor and Analytic Tools for Prediction of Surface Heat Flux and Temperature of TPS via In-Depth Sensor Data

TN

University of Tennessee, Knoxville/NASA Human Exploration & Operations Mission Directorate

Accurately quantifying surface temperature and heat flux, the rate at which heat goes through a surface, is crucial to the safety and performance of a vehicle flying at hypersonic speeds in hostile environments. This research by the University of Tennessee – Knoxville group aims to significantly improve the estimation of surface temperature and heat flux through in-depth measurements, research of obvious importance to NASA’s Ames and Langley Research Centers. The UTK group has developed indepth guidelines for instrumentation and controlled laboratory testing for calibration of test coupons before installation and use for ground or in-flight testing. Both thermal protection systems (TPSs) and structurally-integrated thermal protection systems (SITPSs) are required for maintaining vehicle and propulsion integrity at significantly elevated temperatures and heat fluxes. Hypersonic combustor effectiveness can also be evaluated by accurate estimation of heat losses from the flow to the surrounding structure. In these applications, accurate surface predictions are required for both temperature and heat flux. In-depth substrate measurements require the use of analytic tools for extracting stable and accurate surface predictions. The guidelines will provide analytic tools and procedures for determination of sensor time constants, material properties (if needed), and prediction and verification of the surface temperature and heat flux. New, experimental test facilities built

www.nasa.gov/epscor/stimuli

Surface temperature and heat flux

for this research are unique to the State of Tennessee and will provide significant capabilities for attracting future research funds while providing a model facility for advancing education. Locally, the UTK group has maintained contact with the U.S. Air Force’s Arnold Engineering Development Center, the Department of Energy’s Oak Ridge National Laboratory, and several local firms about possible technology transfer and development. Craig Stephens, NASA Technical Monitor, Armstrong Flight Research Center

Jay I. Frankel, Science PI, University of Tennessee, Knoxville

NASA EPSCoR Stimuli 2014-15

|

177

EPSCoR Stimuli 2014-15  

NASA Office of Education’s Aerospace Research & Career Development (ARCD) is pleased to release NASA EPSCoR Stimuli, a collection of univers...

Read more
Read more
Similar to
Popular now
Just for you