A.V. Vaganov  , B.E. Zhestkov, I.V. Sakharov , I.V. Senyuev  , V.V. Shtapov  , M.M. Tselunov

DoI Number XXX-YYY-ZZZ

Conference Number HiSST 2018_38601093

The methodology of investigation of nonequilibrium heat exchange and catalytic properties is given. The high temperature experiments were conducted at wind-tunnel VAT-104 of TsAGI. This facility gives opportunity to simulate conditions of flight with velocities 3-8 km/s at altitudes of 60-100 km. The data on catalytic properties of some materials and information on values of heat flux to samples with different catalytical activity are presented. It is shown that impact of the high-speed plasma flow on ceramic sample results in sample temperature leap of some 1000 K. The gain in specific heat flux up to threefold is coursed by catalyticity tenfold increase. The temperature and heat flux leaps are due to formation of high-catalytic thermal barrier HfO2 film. The temperature difference over thermal barrier film is up to 1500 K, film thickness being near 0.5 mm.

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In Categories: HiSST 2018, Materials and Structures, Thermal and Energy Management Systems, Thermal Management, Thermal Protection Systems
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