designed drag 中文意思是什麼
designed drag
解釋
設計尾縱傾-
It can be used not only to change the fire precision of the base bleed projectile, but also to improve the effect of reduction drag and expansion range. the calculating model of the secondary expansive pressure of the burning gas is constructed by means of analysis of the experimental resuits, it has been confirmed that the new base bleed unit can be designed, with the secondary expansive principle of the burning gas pressure. the engineering project of a hybrid base - bleed - rocket high - level efficient extended - range projectile is designed, with the secondary expansive principle of the burning gas pressure, the feasibility and the true worth of its engineering applications is validated in theory
本文提出了底排燃氣壓力不隨外部壓力變化，既可改善底部彈射擊精度又可提高減阻效果的二次擴張原理，建立了底排燃氣二次擴張壓力的計算模型，並通過採用二次擴張原理的新型底排裝置與傳統底排裝置的對比試驗，驗證了新型底排裝置結構實現的可行性；完成了基於底排燃氣二次擴張高效增程原理的底排?火箭復合高效增程彈方案設計及其有關計算，從理論上驗證了其工程應用的可行性和實際價值。 -
The adjoint method can be used broadly in design optimization such as drag minimization at the designed lift conditions
共軛方程優化法在優化設計中有很廣泛的用途，例如減阻，增升，消弱激波等等。 -
Both racquets also feature gamma ' s aero beam frame, which is designed to increase swing speeds by reducing drag
球拍框架的特別設計，能夠減少阻力，增加擺動速度。 -
Abstract : a fast drag system is designed to simulate the law of speedvariations of a certain power system engine in the process of its start by means of electric power drag and the theory of automatic control and through adopting a new type of electric machine and frequency - change techniques, thus enabling the system to achieve quick start, instantaneous breakdown and accurate following of the electric machines speed variations curve set in advance at will
文摘:運用電力拖動與自控理論，採用新型電機及變頻技術，設計一種快速拖動系統藉以模擬某動力系統發動機啟動過程轉速變化的規律，使該系統能夠達到快速啟動，瞬間制動，精確跟隨事先設定的電機轉速變化曲線的目的。
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