燒蝕層 的英文怎麼說
中文拼音 [shāoshícéng]
燒蝕層
英文
ablatant-
To simulate the quiescence and flying status of the motor, the ablation is calculated with different cavity width
為模擬發動機靜止與飛行兩種不同狀態,本文對不同寬度的槽縫人工脫粘層的燒蝕進行了計算,對其進行了比較。Abstract : from the point of theoretical analysis, this dissertation provides the coupling calculation on the hot gas temperature field and ablation in the cavity between stress release boot and insulation of solid motors. through the calculation, some law of the ablation of the stress release boot is found
文摘:從理論分析的角度出發,通過對人工脫粘層和絕熱層所構成的槽縫燃氣溫度場與燒蝕的耦合計算,得出了人工脫粘層的燒蝕規律。Real - time ablation measurement test of insulation based on rtr technique
技術的絕熱層燒蝕實時測量試驗Progress and prospect of ablation resistance of insulation of epdm rubber
三元乙丙橡膠絕熱層耐燒蝕性能的研究評述The conclusion obtained from experimental result showed that particle concentration is an important factor on inhibitor ablation
試驗結果表明:粒子聚集濃度是絕熱層燒蝕的重要影響因素。During the study of solid rocket ramjet ( srr ), ablation of afterburner thermal insulation is a serious problem, which cannot be ignored
固沖發動機補燃室絕熱層的燒蝕問題是目前固沖發動機研製過程中所面臨的一個重要問題。In conclusion, the method of adding a function layer through type winding will improve the insulating performances greatly while maintaining its original ablative performances. compared with other technical schemes, no special equipment is needed. hence, sufficient raw materials and feasible process enable its promising prospect
通過以上研究,得到以下結論:採用布帶纏繞工藝、在防熱層內添加隔熱功能層的方案能顯著提高其隔熱性能,同時保持原有防熱套的燒蝕性能和其他物理機械性能,該方案對后續工序無顯著影響。Based on a cone - shaped compound heatshield, a series of research work has been done from the investigation of theoretical analyses of ablative and insulating principles and technical experiments. 1 based on the exploration of improving material performances, a feasible scheme of adding insulating functional layer is proposed ; 2 a simplified calculation method is proposed via establishing fea ( fmite element analysis ) and instantaneous heat transmission is calculated with the mentioned method ; 3 a practical engineering scheme is proposed through a series of experiments ; 4 the interface problems of the function layer are solved through co - curing method and successful samples are manufactured ; 5 in order to estimate properties, the heatshield was anatomized engineering applied possibility is explored on the analyses of performance evaluation by testing mechanical properties, coefficient of heat conductivity and doing dynamic ablative experiments, also, the comparison with that of the required materials is done
本文以一錐形復合防熱套為研究對象,從燒蝕、隔熱機理的理論分析和工藝試驗兩方面,進行了一下研究工作: 1 、通過對提高材料及製品通過對提高材料及製品隔熱性能的多種途徑進行探討,提出了採用添加隔熱功能層,研究復合型大面積防熱套是理論有效、工藝可行的方案; 2 、通過建立有限元分析模型,對防熱套的燒蝕隔熱行為進行了理論分析,提出了簡化的隔熱計算方法,並用該方法對復合型防熱套的瞬態傳熱模型進行了分析計算; 3 、通過復合型防熱套的工藝探索試驗,提出了一種工程應用上切實可行的工藝方案。To meet the demands of higher insulation performances for certain military applications, a compound heatshield design is proposed. a method that adding an insulating functional layer to the interior of the heatshield is adopted to improve its insulation performances while maintaining its original excellent ablative performances
針對型號發展對燒蝕材料提出的更高的隔熱性能要求,本文提出了一種復合型防熱套的工藝方案。採用在防熱套內層增加隔熱功能層的方法,在保持傳統防熱套良好燒蝕性能的同時,其隔熱性能得到了較大地提高。By analyzing the characteristic of the flow field in overloading srm and comparing several existing experiment techniques, a convergence - fold tube facility was developed. the flow field in chamber of srm with high acceleration was simulated. some inhibitor ablation experiments were carried out in this test facility
通過分析過載條件下流場的特點,提出並比較了現有過載地面模擬試驗技術的優缺點,最終確定了收斂?折管的模擬試驗方法,模擬了高過載條件下發動機燃燒室內的高濃度粒子流,利用該方法開展了高過載模擬沖刷條件下的絕熱層燒蝕特性研究及絕熱層抗沖刷能力的篩選試驗。The antiablation of silicone rubber liner can be improved both by changing the structure of unvulcanized rubber and adding antiablative fillers, and the bond strength between propellant charge and the liner would be increased largely by coating the primer liquid on the charge surface
硅橡膠包覆層中填料的粒徑對硅橡膠的補強效果十分重要;可從改變生膠結構、添加耐燒蝕填料兩方面來改善硅橡膠包覆層的耐燒蝕性;在推進劑藥柱表面上塗覆底塗液可以大幅提高硅橡膠包覆層與推進劑的粘接強度。The simulations results show that the spoiler is available to make the fuel and the oxidizer coming from the former to stay in the cavity for a long time, to let the fuel and oxidizer mix and burn completely. since there is a high temperature zone forming by vortex in the middle of the motor, it required a restricted thermal protection. the plate with holes decreased the vortex function in the cavity, which could not promote the combustion efficiency, but to decrease temperature in the cavity and be benefit to thermal protection of the wall
計算結果分析表明:擾流板可以使燃料和氧化劑在擾流腔內的滯留時間加長,促進燃料與氧化劑的摻混燃燒,提高燃燒效率,但由於渦流在發動機的中間部位形成了高溫燃燒區域,致使局部燃料和絕熱層燒蝕速率增大,加大了熱防護的難度;孔板結構減弱了擾流腔內迴流區的漩流作用,不能增加推進劑燃燒效率,但可以使擾流腔內的溫度降低,給壁面熱防護帶來好處。Finally, the numerical technique was used to investigate influence that different parameters on ablation rate. the relationship between oxygen percentage, pressure, depth of charred layer and ablation rate were obtained
最後計算了不同參數對材料燒蝕率的影響,得到了燒蝕率隨富氧含量、試驗段壓強以及炭化層厚度變化的趨勢。The ablation process in oxygen - riched condition was explored and a physical model was established. electron microscope scanning showed that thermal insulation would form three layers during ablation, namely, primitive material layer, pyrolytic layer and charred layer
在實驗基礎上對富氧燒蝕過程進行了分析,建立了富氧條件下以基體層、熱解層、炭化層三層結構為基礎的燒蝕物理模型。By investigating the specialty of functions in the expression, the following conclusion was drawn : particle concentration was the dominant factor that enforced ablation, and angle contributed to ablation via cutting the char layer
通過分析關聯式中各項函數特性,得到粒子聚集濃度是影響燒蝕量的主要因素,而角度對于燒蝕量的貢獻主要體現在對絕熱層炭層的剪切破壞上的結論。The system can scan stereoscopicly the internal tube of the measured object, the aim is to test the internal flaws of the inspected object, such as crazing, rust - eaten and dropping of electroplated coating
該系統對被檢測物體內表面進行立體掃描,可獲得被檢測物體內壁疵病信息,包括燒蝕面積,裂紋深度及電鍍層脫落面積等。In summary, this paper developed experiment techniques to simulated flow field in overloading srm. it is an effective way to study inhibitor ablation pattern under high acceleration condition. the experiment results provided basis for investigating ablation mechanism and thermal protection
通過本文的研究工作,發展了一種高過載發動機內流場模擬實驗技術,為開展高過載條件下絕熱層燒蝕研究提供了有效的實驗手段;獲得的絕熱層燒蝕實驗結果以及粒徑分佈規律,為高過載條件下絕熱層機理研究奠定了基礎,為高過載發動機熱防護設計提供了依據。An experiment system simulated afterburner oxygen - riched condition was established. the system was composed of ablation test motor, gas supply pipeline and measurement and control system
該系統由富氧燒蝕發動機、氣路系統和測控系統組成,能夠模擬固沖發動機二次燃燒室富氧環境,進行絕熱層材料燒蝕試驗。The recent development of silicone rubber inhibitor ' s mechanical, antiablation and bonding properties were introduced in this paper, which showed that the diameter of the filler in silicon rubber liner had main effect on its reinforcement
摘要介紹了近年來硅橡膠包覆層的力學性能、耐燒蝕性能、粘接性能方面的研究情況以及取得的進展。By observing the macrocosmic and microcosmic state of the test specimens, the ablation pattern of inhibitor was put forward and ablation mechanism was analyzed. the critical average particle diameter that influenced inhibitor ablation was obtained. the time - dependent ablation expression associated particle concentration and angle was achieved through analyzing their variation alone with the change of specimen figure
( 4 )通過對試驗后絕熱材料試件的表觀和微觀狀態分析,提出了過載條件下絕熱層的燒蝕模式,並分析了其燒蝕機理,獲得了試驗條件下影響絕熱層燒蝕的平均顆粒直徑。分享友人