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Block of solid propellant for measuring the speed of combustion of the propellant, comprises an ultrasonic device fixed via a coupling element for measuring the speed of combustion, where the coupling element is made of polyurethane matrix
Block of solid propellant for measuring the speed of combustion of the propellant, comprises an ultrasonic device fixed via a coupling element for measuring the speed of combustion, where the coupling element is made of polyurethane matrix
The block (4) of solid propellant comprises an ultrasonic device fixed via a coupling element for measuring the speed of combustion of the solid propellant. The coupling element: is made of a polyurethane matrix and free of air bubbles; has a Shore D hardness of greater than 80; and contains mineral charges (35-45 mass%) of adequate quantity for providing an acoustic impedance of 3.2x 10 6kgm 2/s at a frequency of 1 MHz equal to the solid propellant and plasticizer and/or degassing agent. The mineral charges include metal sulfate and/or alkaline-earth sulfate. The block of solid propellant comprises an ultrasonic device fixed via a coupling element for measuring the speed of combustion of the solid propellant. The coupling element: is made of a polyurethane matrix and free of air bubbles; has a Shore D hardness of greater than 80; and contains mineral charges (35-45 mass%) of adequate quantity for providing an acoustic impedance of 3.2x 10 6kgm 2/s at a frequency of 1 MHz equal to the solid propellant and plasticizer and/or degassing agent. The mineral charges include metal sulfate, alkaline-earth sulfate, metal oxide, alkaline-earth oxide and/or mixture of charges, and have a density of greater than 4. Independent claims are included for: (1) a process for the elaboration of a block of solid propellant with a coupling element; and (2) a process for measuring the speed of combustion of the solid propellant.
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机译：固体推进剂块（4）包括通过耦合元件固定的超声装置，用于测量固体推进剂的燃烧速度。耦合元件：由聚氨酯基体制成，无气泡;肖氏D硬度大于80;并包含足够数量的矿物质电荷（35-45质量％），以在等于固体推进剂和增塑剂和/或除气剂的1 MHz频率下提供3.2x 10 6> kg m 2> / s的声阻抗。矿物质包括金属硫酸盐和/或碱土金属硫酸盐。固体推进剂块包括通过耦合元件固定的超声装置，用于测量固体推进剂的燃烧速度。耦合元件：由聚氨酯基体制成，无气泡;肖氏D硬度大于80;并包含足够数量的矿物质电荷（35-45质量％），以在等于固体推进剂和增塑剂和/或除气剂的1 MHz频率下提供3.2x 10 6> kg m 2> / s的声阻抗。矿物装料包括金属硫酸盐，碱土金属硫酸盐，金属氧化物，碱土金属氧化物和/或装料混合物，并且密度大于4。包括以下独立权利要求：（1）精制矿物的方法。具有耦合元件的固体推进剂块; （2）测量固体推进剂燃烧速度的方法。
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