subsonic test 中文意思是什麼
subsonic test
解釋
亞音速試驗-
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。 -
The two - dimensional axisymmetric subsonic - transonic - supersonic flow in an experimental arcjet thruster is simulated numerically using flux vector splitting method. the profiles of density, velocity, temperature, pressure and mach number can be obtained by the computation. the computation grid and some computed results are given here. the test equipment such as power supply system, ignition system, propellant supply system, arcjet thruster, thrust measuring device and vacuum system are introduced briefly. some working phenomena of the arcjet are observed and discussed. three different kinds of instability appeared in the process of the experiments. except some important parameters are measured, it is found that the operating stability of argon is better than that of nitrogen
對一實驗電弧加熱式發動機二維軸對稱亞跨超音速流動進行了數值模擬，所採用的方法是矢通量分裂演算法.通過計算可以得出密度、速度、溫度、壓力和馬赫數的分佈.給出了計算所使用的網格和一些計算結果.簡要介紹了實驗所使用的設備，如電源系統、點火系統、推進劑供給系統、電弧加熱式發動機、推力測量裝置和真空系統.對所觀察到的一些工作現象進行了討論.有三種不同的不穩定性出現于實驗過程.除了所測量的一些重要參數，通過實驗發現氬比氮工作更穩定 -
After that, the one - stage prs is connected with the chemical laser system to test cooperation of the two systems. tests show that the ejecting capacity of the one - stage prs is unable to fulfil the exhaust requkement of the chemical laser system, and that the starting process of the cavity and the diffuser is not thorough and the cavity pressure is too high, with the power output of the laser decreasing sharply. then, based on the achievements of the one - stage prs, a " subsonic - supersonic " two - stage prs is developed and a lot of tests are made
隨后，開展了單級引射prs系統與df化學激光器的聯試研究工作，通過大量的聯試實驗，研究了激光器配方、引射器引射能力、聯試時序和擴壓器方案等等，對擴壓器和光腔的啟動特性、光腔壓強和出光功率的影響，得出了光腔壓強過低、單級引射prs系統無法滿足其壓縮比要求，需考慮採用兩級引射prs系統的結論。
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