Device for testing transfiguration burning rate of gun propellant

Abstract

The invention discloses a device for testing the transfiguration burning rate of gun propellant, belonging to the field of performance test of gun propellant. The device comprises a body assembly having a body and a piston, an ignition assembly, two pressure sensors and a data collecting and processing system. The body is provided with a combustion chamber and a piston working cavity to form a closed space through a corresponding end cap; the piston is glidingly matched with the piston working cavity; an igniting powder package in the ignition assembly is located in the combustion chamber and is connected with an igniter outside the body through an electrode and a lead. During a test, the tested gun propellant combusts in the combustion chamber and pushes the piston to move; the two pressure sensors respectively record the pressure curves p1-t and p2-t of the combustion chamber and the piston working cavity in the test process; after combustion of the tested gun propellant, the data collecting and processing system collects the curve p1-t and the curve p2-t and performs a series of calculating and processing to finally obtain the burning rate pressure coefficient and burning rate pressure index of the tested gun propellant. The invention solves the problem for testing the transfiguration burning rate of gun propellant.

Description

technical field [0001] The invention belongs to the field of propellant performance testing, and mainly relates to a propellant combustion performance test device, in particular to a device capable of testing the burning rate of barrel weapon propellant under the condition of airtight variable capacity. Background technique [0002] The propellant is the power source for the barrel weapon to complete the projectile launch. Its combustion performance directly determines the initial velocity of the projectile, the life of the weapon barrel and the stability of the barrel weapon launch. In the development process of gunpowder for body-tube weapons, the burning rate of propellant is generally tested by the closed detonator test method to evaluate the combustion performance of propellant. Since the airtight detonator used in the test is a constant volume test device, there are generally 100ml, 200ml, 500ml and 800ml models, these different types of airtight detonators can test th...

AI Technical Summary

Problems solved by technology

Therefore, there are following problems in testing the burning speed of propellant with the explosive device test method: (1) the propellant burns under the state of constant volume, which is too different from the variable volume process in the actual application process; (2) when the propellant burns, Basically keep a static state, which is inconsistent with the actual application of the propellant burning at a certain speed

From the technical information retrieved so far, there is no public report on the burning rate test of the propellant under the condition of airtight variable volume

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