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<p>The nitrate ester plasticized polyether (NEPE) solid propellant incorporates three principal high-energy components: cyclotetramethylene tetranitramine (HMX), ammonium perchlorate (AP), and aluminum powder (Al), sharing compositional similarities with aluminized explosives. To characterize the detonation response and establish the equation of state (EOS) parameters for detonation products, two <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11043_2025_9817_Article_IEq1.gif" Format="GIF" Height="14" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="MATHML"><math> <mi mathvariant="normal">Φ</mi> </math></EquationSource> <EquationSource Format="TEX">$\Phi $</EquationSource> </InlineEquation>50&#xa0;mm cylinder tests were conducted on NEPE propellant. The radial expansion displacement-time profiles were derived through continuous monitoring of electric probes arrays, which measured the radial displacement differential induced by detonation products. The experimental results demonstrate close agreement between the two datasets, indicating that the electric probes methodology achieves measurement accuracy and exhibits excellent repeatability. A&#xa0;calibration method of Jones–Wilkins–Lee (JWL)-Miller EOS parameters of propellant detonation products considering the reaction of aluminum powder based on cylinder test data, Genetic Algorithm and numerical simulation was proposed. The calibrated JWL-Miller EOS parameters acquired through this methodology demonstrate enhanced fidelity in reproducing the copper cylinder expansion processes.</p>

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Analysis on the detonation characteristics and determination of Jones-Wilkins-Lee(JWL)-Miller parameters of detonation products for aluminized nitrate ester plasticized polyether (NEPE) propellant

  • 期刊论文

  • 发表日期：

    2025年9月10日

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  • Zongtao Guo,
  • Xiong Chen,
  • Jiaming Liu,
  • Jinsheng Xu,
  • Xinyu Cao,
  • Zhengwei Sun

摘要

The nitrate ester plasticized polyether (NEPE) solid propellant incorporates three principal high-energy components: cyclotetramethylene tetranitramine (HMX), ammonium perchlorate (AP), and aluminum powder (Al), sharing compositional similarities with aluminized explosives. To characterize the detonation response and establish the equation of state (EOS) parameters for detonation products, two Φ $\Phi $ 50 mm cylinder tests were conducted on NEPE propellant. The radial expansion displacement-time profiles were derived through continuous monitoring of electric probes arrays, which measured the radial displacement differential induced by detonation products. The experimental results demonstrate close agreement between the two datasets, indicating that the electric probes methodology achieves measurement accuracy and exhibits excellent repeatability. A calibration method of Jones–Wilkins–Lee (JWL)-Miller EOS parameters of propellant detonation products considering the reaction of aluminum powder based on cylinder test data, Genetic Algorithm and numerical simulation was proposed. The calibrated JWL-Miller EOS parameters acquired through this methodology demonstrate enhanced fidelity in reproducing the copper cylinder expansion processes.