Other
Scientific paper
Feb 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.563..401h&link_type=abstract
Proceedings of the Fifth European Symposium on Aerothermodynamics for Space Vehicles (ESA SP-563). 8-11 November 2004, Cologne,
Other
Scientific paper
/RESUME Miniaturized flight experiments being developed at IRS for the European capsule program EXPERT are presented. The following paragraphs provide a brief survey on these sensor systems: PYREX, a pyrometric entry experiment, measures rear side temperatures and heat fluxes on ceramic TPS. It has already been flown twice (EXPRESS, MIRKA). PYREX-KAT38 is a fully qualified six-channel measurement system and was intended to be operated aboard the X-38. A similar design is being further developed for temperature and heat flux measurements in the nose structure of the EXPERT capsule. PHLUX (Sensor system for catalytic experiments) is based on the experiences with PYREX. It is a pyrometric sensor for catalytic heat flux measurements developed for the EXPERT capsule. Here, a probe with two sensors opposite each other has already been developed for ground tests by means of plasma wind tunnel experiments to qualify the sensor functionally and to investigate the catalytic behavior of surfaces. The flight experiment aims to estimate the dissociation degree during the entry using measured heat fluxes on different catalytic sur-faces. This information is important to understand the thermo-chemical interactions between plasma and TPS wall. RESPECT is a spectrometer to be used to gain spectral data in the flow field around EXPERT during its entry. The main goal is to obtain more detailed information about the plasma state in the post shock regime of EXPERT by measuring the spectrally resolved radiation onto the surface. The measured data will provide a database consisting of radiation of multiple species. These data will be used for the comparison with results of numerical simulations using e.g. the IRS URANUS code for validation of aerothermodynamic models.
Auweter-Kurtz Monika
Fertig M.
Herdrich G.
Löhle S.
Pidan S.
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