本文關鍵詞： 盤縫帶傘 充氣 超聲速 守恒元/解元算法 探測著陸　出處：《航天返回與遙感》2016年03期 　論文類型：期刊論文

【摘要】：隨著深空探測著陸的發(fā)展,對降落傘超聲速開傘的研究迫在眉睫。文章采用守恒元/解元算法對美國某空投試驗所用盤縫帶傘進行超聲速開傘過程的仿真模擬,將數(shù)值仿真得到的傘衣充滿外形和最大開傘動載與此盤縫帶傘的高空投放試驗進行對比,獲得較為一致的結果,驗證了數(shù)學模型的可靠性。在此基礎上,繼續(xù)對此盤縫帶傘超聲速開傘過程進行詳細研究,分析了開傘過程傘衣充氣外形變化、開傘動載變化、傘衣應力分布以及傘衣不同位置的應力隨時間的變化情況。結果表明,開傘過程中傘衣會存在一定的"呼吸"現(xiàn)象,同時在傘衣口處會形成一道弓形激波。開傘動載在經歷了較大的波動后逐漸穩(wěn)定,傘衣盤上的應力比傘衣帶上的應力值大。因此,在盤縫帶傘的設計中應著重考慮傘衣盤部分的強度要求。
[Abstract]:With the development of deep space exploration and landing, it is urgent to study the supersonic parachute opening. In this paper, the supersonic parachute opening process is simulated by using conservation element / solution element algorithm. The numerical simulation results of the full shape and the maximum open load of the parachute are compared with the high-altitude test of the plate slot with the umbrella, and the results are consistent, which verifies the reliability of the mathematical model. The supersonic opening process of the plate slot with umbrella is studied in detail, and the change of the aerated shape and the dynamic load of the parachute is analyzed in the process of opening the umbrella. The stress distribution of the canopy and the variation of the stress at different positions with time. The results show that there is a certain "breathing" phenomenon in the canopy during the opening of the umbrella. At the same time, a bow shock wave will be formed at the entrance of the umbrella coat. After the larger fluctuation, the stress on the plate of the umbrella coat is larger than the stress value of the belt of the umbrella coat. Therefore, the stress on the plate of the umbrella coat is larger than the stress value of the belt of the umbrella coat. Emphasis should be placed on the strength requirements of the plate part of the jacket in the design of the pan seams and umbrellas.
【作者單位】： 南京航空航天大學飛行器先進設計技術國防重點學科實驗室;
【基金】：國家自然科學基金(11002070) 航空科學基金(2012ZC52035) 江蘇高校優(yōu)勢學科建設工程基金資助
【分類號】：V445.2
【正文快照】： 0 引言 20世紀60年代,美國從“海盜號”計劃開始,對火星探測用傘開展了大量的研究[1-3],并選定了盤縫帶傘作為火星探測用傘。但在當時,這些研究以高空投放試驗和風洞試驗[4-5]為主。后來隨著“火星探路者”[6]、“火星漫游者”[7-8]、“火星科學實驗室”[9-11]等火星計劃的陸

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1 張宇;;火星降落傘的結構設計與初步性能試驗研究[J];航天返回與遙感;2011年03期

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