91制片糖心vlog玩偶传媒|91传媒天美传媒|亚洲成人久久精品国产|麻豆文化传媒免费欢迎你|91麻豆视频高清|采访麻豆传媒映画拍AV|国产天美传媒国产原创av剧情|91制片厂果冻传了|国产色多多网站|天美传媒欧美av果冻传媒,亚洲精品在线视频,蜜桃影像传媒牛年贺岁,亚洲精品一区在线看

一種新的Whipple防護(hù)結(jié)構(gòu)彈道極限方程準(zhǔn)確率分析

Accuracy analysis of a new Whipple shield ballistic limit equations

  • 摘要: 文章提出一種新的Whipple防護(hù)結(jié)構(gòu)彈道極限方程，對之進(jìn)行了準(zhǔn)確率分析，并與NASA約翰遜空間中心最新的Christiansen方程進(jìn)行了對比。結(jié)果顯示：新方程對國內(nèi)外大量試驗(yàn)數(shù)據(jù)的預(yù)測準(zhǔn)確率達(dá)到了78%，而Christiansen方程的預(yù)測準(zhǔn)確率為72%。對于國內(nèi)200多次超高速碰撞試驗(yàn)數(shù)據(jù)，新方程預(yù)測準(zhǔn)確率為78%，而Christiansen方程僅為61%。可見，文章所提出的新方程對國內(nèi)外材料具有高準(zhǔn)確率和普適性，能夠滿足工程需要。該方程有效克服了國外有關(guān)彈道極限方程預(yù)測準(zhǔn)確率低及通用性不強(qiáng)等缺點(diǎn)，可為我國空間站的M/OD撞擊風(fēng)險(xiǎn)評估和防護(hù)設(shè)計(jì)提供技術(shù)支持及保障。

     

    Abstract: This paper presents an accuracy analysis for a new ballistic limit equation (BLE) developed by our group for Whipple shield. The results are compared with those based on the newest Christiansen BLE developed by NASA’s Johnson Space Center. It is shown that the accuracy of our new BLE reaches 78% in predicting a large number of domestic and foreign HVI tests, while with the NASA’s BLE the accuracy reaches only 72%. Especially for more than 200 domestic tests, the accuracies are 78% and 61%, respectively. Therefore, our new BLE enjoys high accuracy and universal applicability for domestic and foreign materials, and can meet the requirements in engineering applications. Our new BLE effectively improves the accuracy and overcomes the compatibility problem of the NASA’s BLE, and can provide a technical support for engineers in designing shields and conducting risk assessment for China’s future space stations.

     

    • HTML全文

/

返回文章
返回