Nitramine propellant powder ablation property calculation method

A calculation method and propellant technology, which is applied in the field of ablative calculation of nitramine propellant, achieves the effects of shortening the development cycle, reducing research and development costs, and high calculation accuracy

Active Publication Date: 2020-07-17
XIAN MODERN CHEM RES INST
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Problems solved by technology

[0004] The present invention proposes a method for calculating the ablative properties of nitramine propellants to solve the technical problem of how to accurately calculate the ablative properties of nitramine propellants

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  • Nitramine propellant powder ablation property calculation method
  • Nitramine propellant powder ablation property calculation method
  • Nitramine propellant powder ablation property calculation method

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Embodiment Construction

[0033] In order to make the purpose, contents and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the examples.

[0034] This embodiment proposes a method that can calculate the ablative properties of the nitramine propellant within a certain composition range according to the formula composition of the nitramine propellant, the temperature of the reaction gas and the material characteristics of the ablation tube. The method includes the following steps:

[0035] S1. The combustion products of nitramine propellants mainly include redox products and cleavable free radical products, including CO 2 , CO, H 2 O, H 2 , N 2 and R, where R is the general designation of free species such as OH, H, O, N, NO, etc., to determine the amount of CO in the combustion products of nitramine propellants 2 , CO, H 2 O, H 2 , N 2 and the amount of substance of R are respec...

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Abstract

The invention belongs to the technical filed of nitramine propellant powder ablation calculation and particularly relates to a method for calculating the ablation effect of nitramine propellant powder, in a preset formula, in a certain pressure range. The method includes: determining the molar weight of the combustion product components in the nitramine propellant powder; calculating the ablationcoefficients of the combustion products; determining the change rule of the pressure of a reaction chamber relative to the relative quality of combusted propellant powder; calculating the relative quality of the combusted propellant powder; determining the relationship between relative combusted thickness and the pressure; determining a heat conduction model in the radial direction of an ablationtube; calculating the ablation effect of the nitramine propellant powder. Herein, based on the factors of thermal, chemistry and metallurgy, estimation on the ablation effect of high-energy nitraminepropellant powders in different formulas can be carried out.

Description

technical field [0001] The invention belongs to the technical field of calculating the ablative properties of nitramine propellants, and relates to a method for calculating the ablative properties of nitramine propellants, in particular to a method suitable for forming nitramine propellants with a given formula within a certain pressure range. The method of calculating erosion. Background technique [0002] As a key component of barrel weapons such as artillery, the barrel has an important impact on the life of the barrel weapon, directly affecting the economy of the barrel weapon in service and the effective performance of the overall performance. The high-energy nitramine propellant composed of RDX as a high-energy additive is the highest-energy propellant that has been used so far, but the existence of a large number of high-energy components in the formula makes the ablation problem of the propellant more serious. Due to the diversity of formulations, a comprehensive an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C10/00
CPCG16C10/00Y02T90/00
Inventor 韦丁靳建伟严文荣张江波刘毅周敬
Owner XIAN MODERN CHEM RES INST
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