Flight test of a rugged scramjet-inlet temperature and velocity sensor

Joe Kurtz, Mark Aizengendler, Yedhu Krishna, Paul Walsh, Sean O’Byrne

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Citations (Scopus)


The performance of a gas temperature and velocity sensor based on tuneable diode laser absorption spectroscopy (TDLAS) of oxygen in a scramjet engine inlet during a flight test is discussed. This is the first flight-tested TDLAS sensor designed specifically for measuring gas velocity of a scramjet inlet flow under flight conditions. The robustness and stability of the sensor design in dynamic load conditions were made evident by the quality of the data delivered after a very unstable and high-g launch scenario. The scramjet did not reach the targeted test altitude-velocity regime. However, analysis of the low-altitude data determined pressure and temperature in the inlet and showed that an adequate signal-to-noise ratio was obtained for high-speed velocity measurements at altitudes up to at least 30 km.

Original languageEnglish
Title of host publication53rd AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
ISBN (Print)9781624103438
Publication statusPublished - 2015
Externally publishedYes
Event53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States
Duration: 5 Jan 20159 Jan 2015

Publication series

Name53rd AIAA Aerospace Sciences Meeting


Conference53rd AIAA Aerospace Sciences Meeting, 2015
Country/TerritoryUnited States


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