To provide a method for finding out a relational expression between collector head surface pressure measured at a small number of points and a lift coefficient, and positions of the measurement points.SOLUTION: A collector head for test is formed which has many static pressure measurement holes S1, and the collector head for test is subjected to a wind channel test S2 so as to obtain data on surface pressure in a static pressure measurement hole and data on a lift acting on the collector head for test. The obtained data are statistically processed to find a regression equation representing a lift coefficient of the lift using surface pressure data on a small number of static pressure measurement holes S3. Then a practical collector head is formed which has the small number of static pressure measurement holes used for the regression equation S4 so as to acquire surface pressure data on the static pressure measurement holes, and a lift coefficient of the practical collector head is estimated from the regression equation S5.SELECTED DRAWING: Figure 1

    【課題】少ない点数で測定された舟体表面圧力と揚力係数の関係式、及び、その測定点の位置を見出す手法を提供する。【解決手段】多数の静圧測定孔を有する試験用舟体を作成しS1、試験用舟体を風洞試験に供してS2、静圧測定孔における表面圧力のデータ及び試験用舟体に作用する揚力のデータを取得する。得られたデータを統計処理することにより、少ない数の静圧測定孔の表面圧力データを用いて揚力の揚力係数を表現する回帰式を求めるS3。そして、回帰式に用いられた少数の静圧測定孔を有する実用舟体を作成しS4、静圧測定孔の表面圧力データを取得し、回帰式から、実用舟体の揚力係数を推定するS5。【選択図】図1


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    Title :

    ESTIMATION METHOD FOR LIFT COEFFICIENT OF PANTAGRAPH COLLECTOR HEAD, COMPENSATION METHOD FOR PANTAGRAPH LIFT, AND LIFT COMPENSATION PANTAGRAPH


    Additional title:

    パンタグラフ舟体の揚力係数の推定方法、パンタグラフ揚力の補償方法、及び、揚力補償パンタグラフ


    Contributors:

    Publication date :

    2019-11-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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