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Abstract <p>New thermodynamic approaches to the filling of a chamber with control gas in pneumatic vacuum tests during the development of aerospace components are outlined. Two methods are developed for calculating gas compression in a chamber of constant volume with external heat transfer. A numerical experiment shows that they are effective. Successive approximation is used in calculating the external heat transfer. That method ensures the minimum error (&lt;1%) in determining the pressure and temperature in the chamber.</p>

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Thermodynamic Principles for the Gas Filling of Chambers in Aerospace Components during Pneumatic Vacuum Tests

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • V. E. Scherba,
  • V. V. Shalai,
  • E. M. Khalatov,
  • A. R. Aliyev

摘要

Abstract

New thermodynamic approaches to the filling of a chamber with control gas in pneumatic vacuum tests during the development of aerospace components are outlined. Two methods are developed for calculating gas compression in a chamber of constant volume with external heat transfer. A numerical experiment shows that they are effective. Successive approximation is used in calculating the external heat transfer. That method ensures the minimum error (<1%) in determining the pressure and temperature in the chamber.