Stability of Parameters of Long Capillary Fuel Intake Devices Made of Combined Porous Mesh Metals

The article deals with the issue of stability of the basic parameters of a long capillary intake device (CID) made of combined porous mesh metal (CPMM), which was first used to reduce residual liquid fuel in the additional fuel tank of the Briz-M upper stage. The authors analyze the variation range of the CPMM structural parameters, namely the maxi mal pore size that defines the main functional parameter — capillary holding capacity (CHC), and the medium pore size that characterizes the fuel flow capacity of CPMM and CID as a whole. The results of routine tests performed on more than 6500 delivered components (99 sets) agree with the calculated values of the CPMM parameters. The high stability of the CPMM phase separator parameters is determined by the structure of the porous permeable material as well as the applied technologies. The high quality of connections within the CPMM is achieved by the use of the engineered laser beam welding machine that guarantees consistent repetition of the weld seam. The achieved quality of the CPMM connections is demonstrated both in single products and in batches when the manufacturing equipment is used at continuous workload. The high quality of CPMM products promotes wide industrial application of the achievements by Professor V.M. Polyaev scientific school.

References

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