A system and method for simulating and testing the expansion pressure of projectile explosive charge

Abstract

The invention discloses a thermal expansion pressure simulation test system and method for simulating warhead projectile explosive charge. The system comprises a charge simulation chamber, an expansion pressure sensor assembly, a sealing compaction nut, an explosive member, a constant temperature system, a temperature compensating fiber grating, a fiber demodulation system and a measurement control system. Projectile body explosive charge and semisolid state explosive thermal expansion pressure can be directly measured. An explosive test piece is arranged in a simulation chamber cylinder, theexplosive test piece is compacted by the expansion pressure sensor assembly, sealing compaction is exerted onto the expansion pressure sensor assembly, the simulation chamber cylinder is further sealed to form a simulation test projectile, the simulation test projectile is disposed in the constant temperature system, and projectile explosive charge thermal expansion pressure change is measured. The system is advantaged in that operation is simple, the measurement scope is large, measurement accuracy is high, good safety is realized, and a technical problem of direct measurement of projectile body explosive charge and semisolid state explosive thermal expansion pressure is solved.

Description

technical field [0001] The invention belongs to the field of propellant and explosive performance testing, and mainly relates to an explosive charge expansion pressure measurement system, in particular to a thermal expansion pressure test system suitable for simulating warhead projectile explosive charge and based on optical fiber sensing technology. Background technique [0002] Explosives are high-energy substances used by ammunition warheads to achieve target damage. Generally, explosives are loaded in the body of the warhead according to a specific process to form an explosive charge. Expansion pressure of projectile explosive charge refers to the static pressure generated by the explosive charge on the constrained projectile under the condition that the expansion of the explosive charge is restrained. Usually, the body of the warhead is a steel cylinder with a charging port. When high-energy explosives are loaded into the body chamber from the charging port by pressing...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that when characterizing and evaluating the thermal expansion effect of projectile explosive charge and semi-solid state propellant and explosive, the existing expansion test technology for solid propellant and explosive cannot meet the requirements of projectile explosive charge and semi-solid state propellant. Accurate measurement of explosive expansion characteristics lacks test systems and methods for characterization and measurement of thermal expansion effects of projectile explosive charges and semi-solid state explosives

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