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- Knowledge of performance evaluation, reduction in aerodynamic drag and interference, and wind tunnel testing (Aeronautical). 熟悉風機性能評估及風洞試驗,降低氣動阻力(氣動專業);
- The planes survived the wind tunnel test intact. 這些紙飛機在測試風道中絲毫未損。
- The aerodynamic drag coefficient of a bus body model is measured in the wind tunnel with the acoustic excitation technique applied. 本文利用內部聲激勵技術,在風洞中對某廂式客車車身模型進行空氣阻力係數的測試。
- Two double head anti symmetric airfoils have been proposed and the wind tunnel tests on their lift and drag performances have been carried out. 本文分析了雙頭車床控制系統的特點,提出了基於單片機構成的嵌入式控制方案,採用步進電動機實現對刀具的拖動定位,簡化了控制系統結構。
- Then, the base bleed method is introduced on a general supersonic missile to decrease the base drag of the inlet cowl for the first time and is validated by wind tunnel test. 本文首次將底部排氣法應用於導彈上,結合一種具有常規氣動布局的超聲速導彈進行了底部排氣方案設計,採用一種「底窩器」來提高進氣道整流罩的底部壓強,並進行了風洞實驗驗證。
- It is not correct to think of the wind tunnel having uniform flow. 設想風洞具有均勻的氣流是不正確的。
- Setting very low speeds in a wind tunnel is always a vexatious problem. 在風洞中調出低風速來始終是一個麻煩問題。
- The paper is base on reference and gives theory method for estimating vertical drag, and for example of one helicopter, lias computed,Obtains a good agree of computing result with main rotor/fuselag wind tunnel lest result. 本文根據參考文獻,給出估算垂向阻力的理論方法,並以某機為例進行了計算,計算結果與該機的旋翼/機身組合風洞試驗結果相比,獲得了很好的一致。
- It should be noted that a balance is not always required in a wind tunnel. 應該指出,天平對風洞來說並非是絕對必須的。
- The aerodynamics characteristics of this airfoil is studied in wind tunnel. 進行了翼型的低速氣動力性能研究,為附面層特性研究提供了方向。 結果表明,該翼型具有較好的升阻和俯仰特性,但失速特性差。
- The wind tunnel is produced under a technical cooperation agreement with Ford Co of US. 風洞機是根據與美國福特公司的技術合作協議生產的。
- Any flight test and wind tunnel correlation always suffers from a great number of unknowns. 在對飛行試驗與風洞試驗進行比較時總有大量的未知數。
- The experiments were conducted in a wind tunnel at a location 50 ft downwind from the fan. 實驗是在風洞中距離風機50英尺處進行。
- The damping derivatives can only be determined experimentally in the wind tunnel or ballistic range. 阻尼導數只能用風洞或彈道試驗來確定。
- In the experiment under the 20 m/s wind tunnel conditions, the wind abrasion modulus is almost zero. 在每秒20米的風洞實驗中,吹蝕模數幾乎為零。
- In this paper, the initial stage in application of fuzzy logic to aircraft high-angle-of attack aerodynamics using wind tunnel test data is outlined. 本文概述最初階段利用風洞試驗數據應用模糊邏輯研究飛機大攻角空氣動力學的情況。
- In the experiment under the 20 m/s wind tunnel conditions,the wind abrasion modulus is almost zero. 在每秒20米的風洞實驗中,吹蝕模數幾乎為零。
- Both types of tests have been explored in wind tunnels. 這兩種形式的試驗都已在風洞中進行過探索。
- NASA and Boeing said data from the flight are already being compared with data from wind tunnel tests. NASA和波音公司的數據說,從飛行正在與風洞試驗數據。
- The design method has successfully solved the problem of design and matching of Swivel Table for Sand-Dirt Wind Tunnel. 所提出的設計方法成功地解決風洞轉檯的設計與匹配問題,有效地縮短了設計周期。