本文選題：滑水 + 濕滑道面��； 參考：《中國民航大學(xué)》2017年碩士論文

【摘要】：隨著中國民用航空業(yè)的迅速發(fā)展,飛機作為航空運輸業(yè)主要載運工具,對其安全性能的研究與評估一直被從業(yè)人員所重視。而飛機在起飛、降落運行階段一直是航空事故頻發(fā)的關(guān)鍵節(jié)點,統(tǒng)計分析表明降雨造成的事故幾乎占總數(shù)的67%以上。針對以上問題本文對濕滑道面飛機輪胎力學(xué)行為及該過程中的飛機著陸安全問題進行了探討,得到了一些有益的結(jié)論。1)基于Navier-Stokes粘性流體力學(xué)微分方程建立輪胎-濕滑道面相互作用理論模型,得出輪胎所受水膜抬升力,提出臨界滑水速度上、下限解的概念。在此基礎(chǔ)上,建立輪胎-濕滑道面三維實體有限元分析模型,利用NASA試驗結(jié)果驗證模型正確性,采用CEL算法進行輪胎-濕滑道面相互作用計算和分析,得到動水壓強分布規(guī)律和滑水現(xiàn)象產(chǎn)生機理,印證了臨界滑水速度不唯一的結(jié)論。2)考慮實際道面積水情況,利用上述模型建立動輪胎沖擊靜流場模型,探討考慮實際道面積水狀態(tài)下的輪胎-道面相互作用力變化規(guī)律,獲得實際道面積水條件下的臨界滑水速度與其變化規(guī)律,并基于此提出臨界滑水速度修正公式。3)在動輪胎沖擊靜流場模型的基礎(chǔ)上,開展道面支撐力影響因素分析,表明水膜、胎壓與速度是影響道面支撐力變化的主要因素。在此基礎(chǔ)上,考慮飛機升力得到不同水膜厚度下的道面支撐力、水膜合力的變化關(guān)系曲線。4)基于道面支撐力的研究成果,建立運動學(xué)有限元分析模型,開展?jié)窕烂嫔巷w機滑行安全問題研究。明確了飛機在濕滑道面運行時,積水區(qū)域位置對飛機發(fā)生偏航的影響。距離飛機著陸點130m與400m出現(xiàn)積水易引起飛機著陸過程中的偏航角度。5)基于上述研究成果,給出不同降雨強度等級下,飛機著陸進近速度的建議控制值,以及道面積水控制建議。
[Abstract]:With the rapid development of civil aviation industry in China, aircraft as the main carrier of air transportation industry, the research and evaluation of its safety performance has been paid attention to. The flight is always the key node of frequent aviation accidents in take-off and landing stages. Statistical analysis shows that the accidents caused by rainfall almost account for more than 67% of the total. Aiming at the above problems, this paper discusses the mechanical behavior of aircraft tire on wet slipway surface and the safety of aircraft landing in the process. Some useful conclusions are obtained. 1) based on the Navier-Stokes viscous fluid mechanics differential equation, the theoretical model of tire wet slip surface interaction is established, and the concept of the upper and lower limit solution of critical water slide velocity is proposed. On this basis, the three-dimensional solid finite element analysis model of tire wet slip surface is established. The validity of the model is verified by NASA test results. The CEL algorithm is used to calculate and analyze the tire wet slip surface interaction. The distribution of hydrodynamic pressure and the mechanism of hydrodynamic phenomena are obtained, and the conclusion that critical water skiing velocity is not unique is confirmed. (2) considering the actual channel area and water situation, the static flow field model of moving tire impingement is established by using the above model. In this paper, the variation law of tire / track surface interaction force under the condition of actual track area water is discussed, and the critical water slide velocity and its variation law are obtained under the actual track area water condition. On the basis of this, the critical water slide speed correction formula .3) based on the impact static flow field model of moving tire, the influence factors of pavement support force are analyzed. It is shown that water film, tire pressure and velocity are the main factors that influence the change of pavement support force. On this basis, considering the lift force of the aircraft, the relationship curve of the surface support force and the water film force under different water film thickness is obtained. The kinematics finite element analysis model is established based on the research results of the supporting force on the track surface. Research on the safety of aircraft gliding on wet slipway surface is carried out. The influence of the location of the hydrological zone on the yaw of the aircraft on the wet slipway surface is clarified. Based on the above research results, the suggested control values of the approaching speed of the aircraft under different rainfall intensity levels and the water control suggestions for the channel area are given.
【學(xué)位授予單位】：中國民航大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：V328;V212.131

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