Fabrication of Porous Transpiration C/SiC Composites

Ji, Hong Liang; Zhang, Chang Rui; Zhou, Xin; Cao, Ying

doi:10.4028/www.scientific.net/kem.368-372.1053

Cited by 1 publication

(1 citation statement)

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“…When a hypersonic aircraft flies close to 10 Mach, the windward surface is exposed to an ultra-thermal environment, and the surface temperature of some parts exceeds 3500 K. Continuous aerodynamic heating is a problem for hypersonic cruise missiles (Dong et al, 2019). The research of OPEN ACCESS EDITED BY aircraft shape design and thermal protection materials is necessary for the development of spacecraft return technology (Ji et al, 2008;Hayashi and Wakayama, 2009). As a result, the thermal protection system is critical for the safety of hypersonic aircraft that are subjected to high levels of aerodynamic heating (Wang et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Effects of particle diameter and plate thickness on transpiration cooling for double-layer porous plates

Zhang

Yan

et al. 2022

Front. Energy Res.

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Transpiration cooling is a highly efficient active thermal protection technology, which has a great application prospect in the thermal protection of hypersonic vehicles. Nevertheless, the problem of large injection pressure caused by porous structure in transpiration cooling system has been ignored in previous studies. In this work, the transpiration cooling performance of double-layer sintered metal particle plates with different particle diameter combinations and plate thickness were simulated. The results showed that the cooling effectiveness of double-layer plates was improved when the particle diameter of the porous plate in direct contact with the main stream decreased. The inner plate particle diameter and plate thickness had little effect on cooling performance. By increasing inner plate particle diameter, the coolant injection pressure can be lowered by 41% while the structural thickness was maintained. Further reducing the thickness of the outer plate to 1/4 of the total thickness can reduce the injection pressure to 38% of the single plate, which provided an optimization direction for reducing engine power consumption caused by heat dissipation.

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Section: Introductionmentioning

confidence: 99%