hovering flight 中文意思是什麼
hovering flight
解釋
懸空飛行-
To study the influence of this damper configuration to aeromechanical stability, some work has been done in this thesis. first, dynamic equation of the rotor - hub system was modeled with the generalized hamilton principle, which can be used to analyze the stability problem in different conditions like on - ground, hovering and flight. when fastening the fuselage, the model can also be used to analyze the stability problem of isolated rotor system
為了研究這種新型布置減擺器對直升機穩定性的影響，本文所作研究工作如下:首先，本文利用廣義的hamilton原理建立了適用於不同狀態（地面、懸停和前飛）的旋翼/機體耦合系統的動力學模型，該模型中將機體固定可以用來分析孤立旋翼的穩定性問題。 -
In chapter 3, the non - linear equation was linearized with the jacobi matrix, and then the linearized equation was transformed into fixed frame to analyze the stability problem with eigenvalue method ( on - ground or hovering ) or floquet theory ( forward flight ). meanwhile, the equation was perturbed by sweep frequency excitation from steady state to get transit decay of lag response which was then transformed into fixed frame with a numerical fourier coordination transformation ( fct ). the fixed frame response along with the body response was analyzed via an fft to determine modal frequencies
然後，在穩態響應的基礎上利用雅各比矩陣對非線性方程進行了線化，線化后的方程利用多槳葉坐標變換轉換到固定系下后，利用直接特徵值分析（地面、懸停）或floquet理論（前飛）對系統進行了穩定性分析;同時，對系統進行了瞬態響應分析;在系統達到穩態的基礎上進行掃頻激勵，用fft變換求得系統頻率，進而用移動矩形窗方法分析得到系統的阻尼。 -
And city boss stuart pearce would welcome the pacy winger back with open arms as his troops are hovering just two points above the top - flight relegation zone
曼城主教練皮爾斯非常歡迎這位邊前衛能夠回到曼城來，現在這支英超球隊離降級只差2分了。 -
Design of automatic transition and hovering flight control system for helicopter
直升機自動過渡懸停飛行控制系統設計 -
Even ali, who had hastened to obey the count s summons, went forth from his master s presence in charmed amazement at the unusual animation and pleasure depicted on features ordinarily so stern and cold ; while, as though dreading to put to flight the agreeable ideas hovering over his patron s meditations, whatever they were, the faithful nubian walked on tiptoe towards the door, holding his breath, lest its faintest sound should dissipate his master s happy reverie
阿里聽到鑼聲就趕快跑來了，看到他的臉上閃爍著這樣稀有的歡喜的光彩，便又躡手躡腳，屏息靜氣地退了出去，象是生怕驚走了那徘徊在他主人身旁的愉快的念頭似的。 -
By the use of “ radar target backscattering simulation software ” and through many flight mode and research mode experiments with the u. s. - made helicopter ah - 64 as an example, a detailed analysis of helicopter echoes ’ time, frequency domain and time - frequency distribution characteristics is made. finally, according to these features, a tentative plan to detect hovering helicopters is proposed
本文利用專門的電磁模擬軟體，以美製「阿帕奇」直升機為例，詳細分析了直升機雷達回波的時域、頻域和時頻分佈的特性，並根據這些特點提出了雷達探測武裝懸停直升機的初步方案。
分享友人