subsonic aircraft 中文意思是什麼
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This is, of course, the reason why a sonic boom hits us with all its fury from a supersonic aircraft but not from a subsonic one.
當然，這就是為什麼音爆從超音速飛機上以它的全部力量向我們沖來，而音速飛機上則沒有音爆傳來。 -
A requires all subsonic narrow - bodied jet aircraft flying in and out of hong kong to meet with the most stringent international noise standard ; and requires all subsonic jet aircraft taking off or landing in hong kong to be certificated in accordance with international established procedures
A規定所有亞音速狹體噴射機必須符合最嚴格的國際噪音標準，方可在香港升降及b規定所有亞音速噴射機必須遵照國際民航公約規定程序領取證明書，方可在香港升降。 -
Then the steady and unsteady subsonic, transonic and supersonic viscous flows around airfoil and some aircraft are numerically simulated. the 3 - dimensional unsteady navier - stokes equations are solved using the implicit lu - nnd algorithm, with baldwin - lomax turbulent model. on the basis of simulating unsteady viscous flow, coupling the structure dynamics equations, the problems of static aeroelasticity and flutter are investigated for wings and elevator
在模擬非定常粘性繞流的基礎上，與顫振運動方程相耦合，分別對機翼和全機流固耦合現象中顫振問題進行了研究，準確求解跨音速顫振臨界速度，分析機翼和全機的從亞音速到超音速范圍的顫振規律，並研究分析了機翼飛行迎角變化對顫振速度的影響。 -
The research of this dissertation is focused on how to simulate numerically the steady and unsteady subsonic, transonic and supersonic viscous flows around wing and aircraft by computational fluid dynamics method. on this basis, several kinds of aeroelastic problems of aircraft are investigated
本文的主要工作是利用計算流體力學（ cfd ）方法，數值模擬機翼和全機的定常及非定常粘性繞流，並在此基礎上耦合結構動力學方程研究了飛行器的多種氣動彈性問題。 -
With effect from 1 july 2002, all chapter 2 subsonic jet aircraft as defined in part ii, volume i, annex 16 of the convention on international civil aviation, which only meet less stringent noise standards, are banned from landing and taking - off at the hong kong international airport
從2002年7月1日起，全面禁止噪音較強，屬于國際民航公約附件16卷1第2部第2章所界定的亞音速噴射飛機在香港國際機場升降。
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