The invention provides an aircraft bottom resistance coefficient correction method so as to solve the problems existing in an existing aircraft bottom resistance coefficient correction method. The method comprises the steps that 1, a test device is designed and comprises a wind tunnel test model, a force measuring balance, a balance supporting rod and four pressure measuring pipes, the force measuring balance is arranged in the wind tunnel test model, the balance supporting rod is connected with the balance and extends out of the bottom of the wind tunnel test model, and the four pressure measuring pipes are evenly fixed to the upper portion, the lower portion, the left portion and the right portion of the balance supporting rod respectively; and 2, the aircraft bottom resistance coefficient correction amount is calculated, specifically, 2.1, the model attitude stabilization time at the first attack angle is set to be t, pressure data of four piezometric tubes are collected every [delta]t within t1 after stabilization is finished, and t is larger than t1; 2.2, data acquisition modes under other attack angles are set: the model attitude stabilization time is sest under each attack angle as t1, and pressure data of the four piezometric tubes are obtained every [delta]t time within the t1 time; and 2.3, the correction amount of the bottom resistance coefficient of the aircraft iscalculated on the basis of the pressure data obtained through 2.1 and 2.2.

    本发明提供一种飞行器底部阻力系数修正方法,以解决目前飞行器底部阻力系数修正方法中所存在的问题。包括:1、设计试验装置:包括风洞试验模型、测力天平、天平支杆和四根测压管,测力天平设置在所述风洞试验模型内,天平支杆与天平相连从模型内伸出风洞试验模型的底部,四根测压管分别均匀固定在天平支杆的上、下、左、右;2、计算飞行器底部阻力系数修正量,包括:2.1设定首攻角时模型姿态稳定时间为t,且在稳定结束后t1时间内,每Δt时间采集四根测压管的压力数据,t>t1;2.2设定其余攻角下的数据采集方式:每个攻角下模型姿态稳定时间均为t1,在该t1时间内,每Δt时间采集四根测压管的压力数据;2.3基于2.1和2.2获取的压力数据计算飞行器的底部阻力系数修正量。


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    Title :

    Aircraft bottom resistance coefficient correction method


    Additional title:

    一种飞行器底部阻力系数修正方法


    Contributors:
    GUO PENGLIANG (author) / LIU SHIYUAN (author) / ZHU GUOXIANG (author) / GUO DECHUN (author) / LI XINYA (author)

    Publication date :

    2020-07-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



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