subsonic speed 中文意思是什麼
subsonic speed
解釋
次音速速率-
The method of wing shape optimization of space shutlle has been developed with penalty function approach in which the objective function is the mass of the wing and the constraints are the hypersonic re - entry flight cross range, lift / drag ratio, and subsonic flight lift / drag ratio, the margin of the longitudial static stability and the magnitude of the horizontal landing speed etc
摘要介紹了在滿足高超音速再入橫向機動航程，高超音速再入飛行時的升阻比，亞音速進場飛行時的升阻比，縱向靜穩定性裕度和水平著陸速度等飛行性能設計要求下，用罰函數法尋求使航天飛機機翼質量為最小的外形優化方法並給出了算例。 -
Unlike in subsonic and transonic speed regimes, the interference resulting from the finite size of the test region is seldom present.
不像在亞、跨音速區域，這里因試驗段尺寸有限造成的干擾是難得存在的。 -
The relationship between the load measured by strain method and the load calculated according to flight parameters and the wind tunnel test data has been investigated in this thesis. the result showed that the calculation load based on the flight parameters and wind tunnel test data is acceptable in subsonic speed and gets good agreement, with the load measured by strain method
本文研究了採用應變法實測載荷和根據飛行實測參數和風洞實驗數據計算載荷之間的關系，研究表明採用飛行實測參數和風洞實驗的數據計算載荷在亞音速范圍內是可行的，與採用應變法實測載荷是吻合的。 -
What he envisions is an ellipsoid with tiny wings that he says can take off vertically and move like an alien spaceship, albeit at subsonic speed
他所設想是極有橢翅膀起飛，他說像一個垂直和舉措外國人飛船，不過亞音速速度
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