The invention belongs to the technical field of aircraft design, and particularly relates to a propeller engine ground noise testing method. When an engine starting test is carried out, measurement microphones are arranged at all measurement points to measure engine noise, and the measurement point arrangement mode comprises the steps that a circle of first set of measurement points are arranged on the ground in the circumferential direction with the projection of the center of an engine on the ground as the center and the first distance as the radius; the method further includes taking the projection line of the axis of the engine on the ground as a first reference line, and arranging a linear second group of measuring points on the ground parallel to the first reference line at a seconddistance; taking the engine axis as a second reference line, and constructing a third group of measuring points which are parallel to the second reference line and have the same height with the secondreference line on the inner and outer surfaces of the fuselage; and arranging a fourth group of measuring points on the inner and outer surfaces of the aircraft body along the radial direction of theaircraft body by taking a propeller rotating plane of the engine as a reference plane. Through the arrangement of the microphone measurement points, the noise characteristics of the propeller enginecan be efficiently and accurately obtained.

    本申请属于飞机设计技术领域,特别涉及一种螺旋桨发动机地面噪声测试方法。在进行发动机开车测试时,通过在各测点布置测量传声器对发动机噪声进行测量,测点布置方式包括:以发动机中心在地面的投影为中心,以第一距离为半径在地面上周向布置一圈第一组测点;以发动机轴线在地面的投影线为第一基准线,与第一基准线平行且间距第二距离的地面上,布置一呈直线型的第二组测点;以发动机轴线为第二基准线,在飞机机身的内外表面构建与第二基准线平行且高度相同的第三组测点;以发动机的螺旋桨旋转平面为基准面,沿飞机机身径向在其内外表面布置第四组测点。本申请通过传声器测点的布置,能够高效、准确的获得螺旋桨发动机的噪声特性。


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    Titel :

    Propeller engine ground noise testing method


    Weitere Titelangaben:

    一种螺旋桨发动机地面噪声测试方法


    Beteiligte:
    GU JINTAO (Autor:in) / WANG MEIYAN (Autor:in) / GAO FEI (Autor:in) / XIAO QIAN (Autor:in) / HU CHENYING (Autor:in) / DUAN ZHUOYI (Autor:in) / ZHOU JIE (Autor:in)

    Erscheinungsdatum :

    2020-08-28


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / 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



    Propeller Aircraft Flyover Noise Testing

    Shreve, James C. | SAE Technical Papers | 1977





    Aircraft propeller noise

    Brouwer, H. H. / von Karman Institute for Fluid Dynamics | British Library Conference Proceedings | 1994