Energy Consumption Analysis of Parachute Ejection Process from the Capsule

仿真参数	数值	仿真参数	数值
火药力$ f $/(J/g)	1000	燃速指数n	0.95
余容系数$ \mathrm{\alpha } $/(cm³/g)	0. 85	活塞预定行程$ l $/m	0.25
药形系数$\chi $	1.014	活塞面积$ \mathrm{\mathit{S}} $/cm²	9.6
药形系数$\lambda $	−0.014	弹射体总质量$ M $/kg	20
主装药量$ \mathrm{\omega } $/g	16.7	剪切销的极限压强$ {P}_{0} $/MPa	15.9
火药密度$ \rho\mathrm{_p} $/(g/cm³)	1.6	燃气的比热比	1.4

Table 2. The fitting result of three different states

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Table 2. The fitting result of three different states

不同阻尼状态	欠阻尼状态	临界阻尼状态	过阻尼状态
阻尼系数c/(N/(m·s⁻¹))	$ 5.270\times {10}^{1} $	$ 7.578\times {10}^{3} $	$ 1.857\times {10}^{3} $
刚度系数k/(N/m)	$ 9.298\times {10}^{5} $	$ 2.761\times {10}^{6} $	$ 1.623\times {10}^{5} $
和方差SSE	$ 6.816\times {10}^{-5} $	$ 1.937\times {10}^{-2} $	$ 1.265\times {10}^{-2} $
均方差RMSE	$ 9.231\times {10}^{-4} $	$ 1.546\times {10}^{-2} $	$ 1.258\times {10}^{-2} $
拟合优先度检验R-square	$ 9.872{\times 10}^{-1} $	$ 2.368\times {10}^{-1} $	$ 5.014\times {10}^{-1} $

Table 3. Comparison of two different working conditions
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Table 3. Comparison of two different working conditions
不同工况状态工况1 工况2
弹射质量/kg 20.0（刚柔质量比1∶1） 14.5（刚柔质量比9∶20）
主装药量/g 16.7 13.0
活塞预定行程/m 0.25 0.22
剪切销极限压强/MPa 15.9 7.0

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Qiqi HAN, Qiyue LU. Energy Consumption Analysis of Parachute Ejection Process from the Capsule[J]. Spacecraft Recovery & Remote Sensing, 2025, 46(1): 33

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