高速飛行研究 的英文怎麼說
中文拼音 [gāosùfēihángyánjiū]
高速飛行研究
英文
high-speed flight exploration- 高 : Ⅰ形容詞1 (從下向上距離大; 離地面遠) tall; high 2 (在一般標準或平均程度之上; 等級在上的) above...
- 速 : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
- 飛 : Ⅰ動詞1 (鳥、蟲等在空中活動) fly; flit 2 (利用動力機械在空中行動) fly 3 (在空中飄浮遊動) fly...
- 行 : 行Ⅰ名詞1 (行列) line; row 2 (排行) seniority among brothers and sisters:你行幾? 我行三。where...
- 研 : 研同 「硯」
- 究 : Ⅰ動詞(仔細推求; 追查) study carefully; go into; investigate Ⅱ副詞[書面語] (到底; 究竟) actually; really; after all
- 高速 : (高速度) high speed; high velocity (hv); high rate; swift; fast; express; high-speed
- 飛行 : flight; flying; aviate; voyage; volitate; hop
- 研究 : 1. (探求) study; research 2. (考慮或商討) consider; discuss; deliberate
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Sicp / al matrix composites, with 5, 15 and 25 % volume fraction of sic particles, were prepared by vacuum hot - pressing sintering processing in this paper. based on mechanics properties, sem observation and energy dispersive x - ray analysis, the interface reaction phenomenon of sicp / al composites made by vacuum hot - pressing sintering, as well as the reinforcement and fracture mechanisms of this composite were analyzed. the dynamic responses of sipc / al composites were studied by a split hopkinson high - speed pressure bar impact system which strain rate was from quasistatic state strain rate ( 3. 3 10 - 3s - 1 ) to dynamic state strain rate ( 5. 2 103 s - 1 )
本研究以武裝直升飛機防護裝甲材料為研究對象,採用真空熱壓粉末冶金燒結工藝制備了含sic顆粒體積分數分別為5 、 15和25的sic顆粒增強鋁基復合材料,結合其力學性能、掃描電鏡和界面微區能譜分析結果,分析了sic _ p al復合材料的真空燒結過程中的界面現象,以及材料增強和斷裂機理,並利用hopkinson高速壓桿沖擊實驗系統對其從靜態到動態(應變率為3 . 3 10 ~ ( - 3 ) s ~ ( - 1 ) 5 . 2 10 ~ 3s ~ ( - 1 ) )的壓縮破壞響應進行了研究,分析了不同體積分數sic _ p al復合材料高應變率壓縮載荷下,材料的變形和微觀損傷機理,以及利用高速沖擊空氣炮測定了改復合材料制備剃度復合板的穿透性能。In this paper, some flows around naca 0012 aerofoil, m6 wing and two different blunt vehicles are simulated, the results show that the present algorithm possesses good characteristics and capability for normal mach number and for hypersonic of simple configurations
通過對naca0012翼型、 m6機翼、鈍頭以及雙鈍錐?柱體的算例驗證,本文能很好的解決一般馬赫數問題,能夠很好的求解簡單外形的高超聲速問題,對于復雜外形飛行器還需要進一步進行研究驗證。Scramjet is the perfect propulsive device to hypersonic vehicle, and is a hot issue in current hypersonic technology area
超燃沖壓發動機是高超聲速飛行器理想的動力裝置,是當前高超聲速技術領域的研究熱點。The aerothermoelastic analysis of missile structure includes the thermal stiffness, thermal vibration and thermal flutter analysis. this dissertation emphasizes on thermal vibration analysis of the aerial vehicle under aerodynamic heat condition
本文研究背景是彈體這類典型結構在高速飛行情況下,由於氣動加熱引起的高溫對結構氣動熱彈性分析,包括熱剛度、熱振動問題的研究。In high - performance aircraft the pilots are vulnerable to ci because of some of the aircrafts " characteristics, which include high sustained + gz ( hsg ) acceleration, high rate of onset and high angular acceleration etc. so it has all the while been attached much importance to the studies on the mechanism of ci and the preventing and overcoming method of ci by the researchers in aviation medicine field
目前以f - 16 、蘇- 27為代表的高性能戰斗機,其所具有的持續高加速度( + gz ) 、高加速度增長率、高角加速度的特點更易導致飛行中科里奧利錯覺的發生,嚴重危害飛行安全。因此,對科里奧利錯覺的機理及預防與克服研究在航空醫學中一直受到人們的重視。Firstly, the three main harmful factors " characters and rules, theirs effect on civil house, demolishment criterion and control measure will be researched systemically. secondly, fuzzy mathematics, system arrangement analytical method and expert consultation method are put forward and discussed specially to set up civil house security fuzzy multi - arrangement elevation model, to evaluate blasting harmful factors " effect to neighborhood civil house ' s safety in the construction of express way, to predict the security of civil house and to bring forward control measures. lately, the forecast of the civil houses " safety by using bp neural net model and optimize of the blasting parameters will also be discussed in the dissertation
本文的主要研究工作有:系統地研究了爆破地震、爆破飛石、爆破空氣沖擊波三大有害因素的特徵及規律、對民房的影響、破壞判據和控制措施;提出並重點論述採用模糊數學和系統層次分析法及專家咨詢法建立民房安全性模糊多層次評價模型,對高速公路建設中爆破有害因素對鄰近民房安全進行評價,預測民房安全性,提出控制措施;利用bp神經網路模型對民房安全進行預測,並對爆破參數進行優化。Second, by computing the trajectory of the missile and the method of analyzing cep, influences that the fighter ' s height, speed, pitch angle, the deflection angle between fighter and target, and the target moving characters make on the times of fighter attack and missile launch are deeply developed. third, by relating the motion of the missile and the fighter, the influences that fighter ' s dive angle and the deflection angle between fighter and target make on the attack field of the fighter are discussed in this paper when the fighter perform vertical and horizontal attack. criterion of attack effect is proposed focusing on attack time of the fighter, trajectory of the missile and destruction probability to the target
本文主要完成了以下幾個方面的工作:對導彈可發射區和飛機可攻擊區進行建模,通過對導彈彈道的模擬計算,並運用典型的圓概率偏差精度分析方法,詳細討論了飛機實施攻擊時,飛機的飛行高度h 、速度v 、俯仰角、與目標的偏離角_ x及目標運動特性等對飛機攻擊時機和導彈發射時機的影響;因此,將飛機和導彈結合起來,詳細研究了飛機在垂直平面和水平平面內實施攻擊時,飛機俯沖角和與目標的偏離角_ x對飛機的攻擊范圍的影響;以飛機實施攻擊的時間t 、彈道特性和對目標的殺傷概率p來評判對地攻擊的效果;最後給出典型算例,通過對空地攻擊過程的模擬實現,對飛機飛行過載提出要求。This paper presents a wider research field - risk analysis. through the study of the effects that threat factors and error factors impact on the flight risk and adjusting performance rules, the horizontal safe corridor, threat avoidance, vertical altitude real - time modification and the fastest trajectory programming are progressed
總結前人在該方面的研究成果,提出一個更加廣義的研究角度? ?風險分析。通過對威脅因素、誤差因素對飛行風險的作用,調整性能準則而進行了水平安全走廊設計、威脅迴避、垂直離地高度實時修正以及最快速航跡規劃。The aim of this thesis is to analyze the panel flutter mechanism and establish a mechanical model for panel flutter analysis and this work is the basis of panel flutter control studies
本文的目的就是對壁板的熱顫振特性進行系統深入的分析和研究,為高速飛行器的壁板結構的防顫振設計和壁板顫振抑制的研究建立理論基礎。Electronystagmography ( eng ) is usually used as the objective index to study ci. but it is not clear about the influence of different coriolis acceleration levels on human ci and concomitant nystagmus as well as the correlation between ci and eng parameters. as high maneuverability aircraft is concerned, angular acceleration and linear acceleration coexist in flight
對高機動性的戰斗機而言,飛行中角加速度與線加速度作用往往同時存在,有研究表明,在z軸向的線加速度( + 0 . 8gz )作用下,科里奧利錯覺更為顯著。A mathematic model of the motor is builded and emulated through matlab. the low - speed and constant - torque, high - speed and constant - power state is analyzed and researched, also the software approach of simulation to the driver has been done, a digital signal processor tms320lf2407 is developed successfully to control the perm square - wave bldcm driving airscrew of solar powered unmanned engine. it is useful to the further study
在matlab下建立了電機的數學模型,通過計算機模擬,驗證了數學模型的正確性,同時在理論上對低速恆轉矩高速恆功率運行進行了分析與研究,提出了一種用模糊控制的方法實現恆功率控制,並對驅動器進行了系統模擬,成功的研製了以數字信號處理控制器tms320lf2407為控制核心的驅動器,控制無刷直流電動機驅動太陽能無人飛機的螺旋槳,為後面繼續研究工作提供了參考。The control laws of longitudinal and lateral - directional autopilot modes are designed based on root locus theory. the control laws of altitude holding mode, heading holding mode, auto - throttle control and air speed holding mode are designed as well
研究了無人機的飛行控制技術,利用根軌跡法設計了無人機的縱向與側向姿態保持控制律,設計了高度保持、航向保持、自動油門及速度保持控制律。Transitional feature of the arc and metal droplet in the welding process with steam shielded arc is investigated by means of analysing the waveforms of welding voltage and current under different welding regimes and it is found that there are two types of arc process behavor ? " arc starting - arc blowing out - short - circuiting " and " arc - starting - short - circuiting ". under the condition of constant diameter of welding wire and its feeding speed, the arc process behavor can be changed by adjusting the inductance of welding circuit as well as the voltage of power supply. if arc process behaves as alternative process of " arc starting - arc blowing out - short - circuiting " with minimum time duration of arc blowing out and maximum frequency of short - circuit transition, the welding process will be stable with less spatter and smooth weld bead
通過分析不同焊接規范下的焊接電壓和電流的波形.研究了水蒸氣保護下電弧及熔滴過渡的特點,發現其電弧過程行為有「燃弧?熄弧?短路」和「燃弧?短路」兩種形式.在焊絲直徑和送絲速度一定的情況下,通過調節焊接迴路中的電感量和電源電壓,可以改變電弧的過程行為形式.若電弧過程呈「燃弧?熄弧?短路」交替進行,並且熄弧時間最短時,短路過渡頻率最高,在這種情況下,飛濺小,焊道成型好,焊接過程穩定In the condition of non - axisymmetrical stage separation in hypersonic flight, the problems of dynamics and kinematics of the validating vechicle and the launch vechicle are primarily analysised. it includes the movement of the center of mass and the rigid body of the vechicles, the relative movement of the different vechicles, the relative movement of the special parts of the different vechicles, the load analysis and the probable collision in the process of stage separation
研究了在高超聲速狀態下非對稱級間分離過程中,驗證飛行器與運載火箭分離時的相關運動學和動力學問題。包括:飛行體質心運動和剛體運動;不同飛行體之間的相對運動;不同飛行體上特殊部位之間的相對運動;分離過程中各相關飛行體上的載荷分析和分離過程中可能發生的碰撞問題。Advertising and market research are two of the fastest growing services industries in hong kong, in line with the development of hong kong into a high - income economy and the rapid rise of the chinese mainland s economy
隨著香港演變為高收入經濟體系,以及中國內地經濟起飛,成為消費產品及其它他貨物與服務的龐大市場,本港廣告及市場研究亦成為發展最迅速的行業之一。The main part and key technique of the cpa system is study : the generation of the femtosecond laser pulse is study, the modulation and maintenance of the ti : s laser is learned ; the types of the measurement for ultrashort laser pulse is generalized and the interferometric autocorrelation is expatiated ; the varieties of the stretchers is sum up and aberration - free stretcher is calculated and optimized to improve the stretching ratio ; the pulse selection is analyzed and a single pulse can be selected successful from the pulse train at a repetition rate of 82mhz ; the kinds of the amplifier in cpa system is gathered up, the eight - pass pre - amplifier and a good many effects in it is investigated. finally, the second, third and fourth - order dispersions in cpa system is analyzed systemicly, and the according means for dispersion compensation is worked out
對cpa系統的主要環節及關鍵技術進行了研究:掌握了鈦寶石激光器的調節和維護技術,較深入地研究了飛秒激光脈沖產生的機理,其中對群速色散、自相位調制、自鎖模等問題進行了詳盡的分析;總結了超短激光脈沖的測量技術,重點研究了干涉自相關測量法;在總結展寬器類型的基礎上,對無象差展寬器進行了理論計算、優化設計,提高了展寬倍數;深入論述了脈沖列的選單問題,熟練掌握了脈沖選單技術。As a result, the p - v curve of the target was a quasi - isentropic compression curve, which consisted of small hugoniot curves ( similar to isentropic curves ) from different original states, and was located betwee n the hungoniot curve and isentropic curve but closer to the latter. finally, on a two - stage light - gas gun, titanium alloy projectiles ( with mass of 0. 35 ~ 2. 80g ) were driven intact to hypervelocities as over 15km / s by 93w - ofc - tc4 - a1 - mb2 system flier - plate with graded wave impedance, although the fl
在二級輕氣炮上,利用93w - ofc一tc4一al一mb :系波阻抗梯度飛片成功將克量級( 0 . 35一2 . 809 )欽合金二級飛片發射到了15kln / s以上的超高速度,且二級飛片主體是完整性,但其平面性和飛行姿態還有待於今后的深入研究。In recent years, the most of new fighters and strategic missiles require fly with supersonic or hypersonic speed, and this make a lot of researchers think much of this kinds of phenomena
近年來,新一代的戰斗機及新型的戰略導彈對超音速、高超音速飛行的要求,引起了國內外許多研究人員對這一類流動的重視。As a kind of new configuration waveriders have high lift to drag ratio ( l / d ) in hypersonic flight, which makes the study of waverider shapes an important trend of hypersonic air vehicles development
乘波構形在高超聲速條件下的高陞阻比優勢備受關注,使得對於它的設計研究成為高超聲速飛行器外形設計的一個重要方向。Because the internal structure of high - speed long - range flying objects ( hslrfo ) is so complicated and the mass distribution is extremely non - uniform, the precision of the mass characteristic parameters obtained from theoretical calculation is not enough to be applied to the practical measurement and control. the special test system for the mass characteristic parameters of high - speed long - range flying objects, therefore, is in great need and it is also necessary to study its performance
由於高速遠程飛行物體的內部結構非常復雜,質量分佈不均勻,在科學研究過程中進行的理論計算得到的質量特性參數與其使用要求相差甚遠,基本不能作為計算和測控參數使用,因此必須研製專用的測量系統,並對測量系統的測量特性進行研究。分享友人