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Article
Publication date: 23 December 2020

Łukasz Brodzik

Paper aims to present problem of aerodynamic heating of a metallic heat shield. The key elements of this construction are metallic layers of superalloy honeycomb, which…

178

Abstract

Purpose

Paper aims to present problem of aerodynamic heating of a metallic heat shield. The key elements of this construction are metallic layers of superalloy honeycomb, which significantly increase the structure’s resistance to impact. Paper describes the problem of influence of damage size on increase of thermal load.

Design/methodology/approach

Numerical analysis was performed in a non-commercial environment FreeFem++ using finite element method, and its results were compared with the results given in the literature.

Findings

In thermal protection system, a modification was used to delay increase in temperature on the underlying structure as well as to reduce its maximum value.

Originality/value

In the further part of the paper, selected insulation material was modified by adding additional conductive material.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 5
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 4 June 2019

Łukasz Brodzik and Andrzej Frąckowiak

This paper aims to present the problem of heating the damaged insulation of an orbiter.

108

Abstract

Purpose

This paper aims to present the problem of heating the damaged insulation of an orbiter.

Design/methodology/approach

Changes of the insulation’s thermal properties, made by adding conductive material of high value of specific heat in a form of a dope to the protective layer, were examined. An iterative algorithm determining a variable of dope concentration in the material was developed.

Findings

Determination of distribution of conductive material concentration was made for materials which, after verification, demonstrated the most beneficial effect on protective properties of the modified insulation layer. The problem of determining the distribution of metal filings concentration in the insulation layer of the coating belongs to inverse heat conduction problems.

Originality/value

Change of properties was to enable time extension of the LI900 insulation tile heating up to the maximal temperature and, additionally, to lowering this temperature.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 6
Type: Research Article
ISSN: 0961-5539

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