The invention discloses a test method of a liquid
propellant test
bed, and relates to the technical field of large liquid
propellant test piece ground tests, the test
bed and a tested piece are subjected to three-
dimensional modeling, and the three-dimensional model of the tested piece is assembled on the three-dimensional model of the test
bed; and a
propellant supply connecting pipeline and a propellant
discharge connecting pipeline are drawn according to the three-dimensional model, and then a
solid pipe fitting is machined. According to the method, the test process is optimized, design and
processing of a propellant supply connecting pipeline and a propellant
discharge connecting pipeline are preposed, firstly, a tested piece is assembled on a test bed on a computer, and secondly, the propellant supply connecting pipeline and the propellant
discharge connecting pipeline between corresponding
pipe orifices between the test bed and the tested piece are designed;
processing the pipeline according to the design; after a tested piece is placed on the platform, the propellant supply connecting pipeline and the propellant discharge connecting pipeline are assembled to corresponding positions, so that the test period is shortened, material statistics is facilitated, and work such as structure and
fluid simulation can be carried out in advance.