Test stands for measuring the average diameter of the fuel aerosol drops by diffraction method

Measuring stands enabling practical implementation of the diffraction method for measuring the drop sizes of the fuel aerosol stream are presented. The construction of the diffractometer is described in which the recording of the light intensity distribution is made by scanning the image plane with a detecting system adjusted to the specificity of the image. A stand for measuring the average drop diameter in aerosols produced by fuel injectors of airplane turbine engines are presented and examples of the examination results are shown.