飛機的尾流 的英文怎麼說
中文拼音 [fēijīdewěiliú]
飛機的尾流
英文
wake-
Another well - known example involves the appearance of aircraft contrails figure 2 in winter time
另一眾所周知的例子是飛機在冬天的尾流圖二。Another well - known example involves the appearance of aircraft contrails ( figure 2 ) in winter time
另一眾所周知的例子是飛機在冬天的尾流(圖二) 。Because wake vortices can persist in calm air for several minutes ( extending for as far as eight miles ), the federal aviation administration requires minimum distances between aircraft, based on size
機尾渦流可以在無風的空氣中停留幾分鐘,向後延伸達12公里,所以美國聯邦航空總署按照飛機大小而規定了飛機之間的最小安全距離。Wake vortex separation standards are used to prevent hazardous wake vortex encounters which mainly found in the final approach course within the airport termination zone. firstly, this paper analysis the mechanism of the vortex decay and research the influence on the safety of the flight ; then. several different radar wake vortex separation standards are compared and some basic guidelines are developed to establish the future vortex standards. in addition, one kind of advance vortex classification for the civil airplane is proposed. secondly, an encounter hazard model which established for the following aircraft and a simple vortex decay model which mostly concern with the proceeding one are developed ; and a safe separation model can be derived from the both. finally, through the simulation calculation, the correctness of the vortex classification of different types of aircrafts are tested and proved
本課題對雷達管制條件下的最小尾流間隔標準進行了較為詳細的分析和研究;首先對尾流的形成和消散機理以及尾流對飛行安全的影響做出了詳細的分析,然後就目前實行的幾種不同的最小尾流間隔標準進行了比較和分析,提出了相關的幾條準則和一種改進的機型尾流分類標準;在這之後,採用理論分析和統計數據分析相結合的方法,建立了尾流危險遭遇基本模型和尾渦消散模型;並在此基礎上對民用航空不同機型的尾流分類的合理性進行了計算和評估,為最小尾流間隔標準的確定和改進提供了初步的理論依據。According to newton ' s third law of motion ? for every action there is an equal and opposite reaction ? air streaming out the back faster than the aircraft ' s speed will thrust the plane forward
依據牛頓第三運動定律,每個作用力必會產生一個等量而反向的作用力,因此當空氣以高於飛機的速度自引擎尾部流出時,便可將飛機向前推。Wind turbulence of proceeding a / c
注意前方飛機的尾流。Cleared to enter position and hold, caution with wake turbulence from the departing ( landing ) aircraft
允許滑到起飛位置等待,注意起飛(降落)飛機的尾流。Based on the mechanism of slipstream interaction, described in this thesis is firstly the interaction of the propeller slipstream with the wing 、 fuselage and horizontal tail. subsequently, the changes in lift 、 drag and pitching moment are derived, giving an engineering model for the prediction of the increments in the aerodynamic characteristics caused by the interference between the propeller slipstream and the other parts of aircraft. this method offers a powerful means to the calculation of the aerodynamic interaction between the propeller and the aircraft, providing reliable data for the design of and aerodynamic calculation on propeller - powered aircraft
本文以滑流干擾的機理為出發點,研究了螺旋槳滑流與飛機機翼、機身、平尾組合體之間的相互影響,推導出滑流引起的飛機升力、阻力和俯仰力矩的變化,給出了滑流干擾對機體氣動特性影響的工程估算方法,為研究螺旋槳與飛機部件之間的相互干擾提供了有力的工具,為以螺旋槳發動機為動力的飛機的設計和氣動計算提供可靠的依據。To meet the needs for wider surge margin of the turbofan engine, a new model was developed to predict the characteristics of the fan / high pressure compressor and turbine in this thesis. several ways, including, variable inlet guide vanes of the fan, variable guide vanes of the high pressure compressor, the variable inlet area ratio of the mixer and the nozzle areas, were presented to enlarge the surge margin of the turbofan engine. meanwhile, a method of combined variable geometries for optimizing controls of inlet guide vanes of the fan, guide vanes and the first two stators of high pressure compressor, area ratio of mixer and noz zle areas was established
為了滿足下一代作戰飛機對推進系統的性能和穩定性要求,本文建立了壓縮系統特性和渦輪特性的新模型,並分別採用改變渦扇發動機風扇進口導流葉片、壓氣機導流葉片和前兩級靜葉片、混合室進口處內、外涵面積比和尾噴管面積,研究了其對發動機性能和穩定性的影響,進而得出了渦扇發動機變幾何擴穩的方法,為發動機變幾何擴穩研究打下理論基礎。The superposition between the helicopter rotor induced flow and the warship airwake leads to the formation of the complex wake, which affects the helicopter ' s control response and flight safety during take - off and landing from a warship
摘要直升機旋翼誘導流與艦船空氣尾流疊加后形成復合流場,對直升機艦上起降時的操縱響應及飛行安全有很大的影響。Moreover, aircraft actually generate several vortices ? off the tail flaps, control surfaces and other areas of air - pressure discontinuity, states alan j
此外,連續體動力學公司的總裁畢拉寧說,飛機其實會產生好幾個渦流- -尾襟翼、操縱面與其他產生氣壓不連續的區域。When pilots attempted to maneuver with the tail ' s rudder in the wake turbulence from a preceding aircraft, the entire vertical stabilizer separated from the airplane, sending the a300 into a death spiral
當飛機碰上由前一架飛機所殘留的亂流,機長試圖操縱尾翼的方向舵時,就造成整個垂直平衡器與機身分離,也使得那架a300飛機?旋直下,邁向死亡。Engineers are working on ways to detect hazardous wake vortices so pilots can avoid them or to design aircraft that leave safer skies behind them
工程師正在研究,想找出有效的點子,偵測危險的機尾渦流,或設計不會危及後方空域的安全飛機。分享友人