ارزیابی قابلیت اطمینان و طول عمر پیشرانه‌های پایه نیتروسلولز

fathollahi, manochehr; soleimani, fatemeh; baniasad, moslem; hosseini, sed mohammad javad

Volume 19, Issue 1 (3-2024) مواد پرانرژی 2024, 19(1): 43-52 | Back to browse issues page

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fathollahi M, soleimani F, baniasad M, hosseini S M J. ارزیابی قابلیت اطمینان و طول عمر پیشرانه‌های پایه نیتروسلولز. مواد پرانرژی 2024; 19 (1) :43-52
URL: http://isaem.ir/article-1-1494-en.html

ارزیابی قابلیت اطمینان و طول عمر پیشرانه‌های پایه نیتروسلولز

Manochehr Fathollahi ^*

, Fatemeh Soleimani

, Moslem Baniasad

, Sed mohammad javad Hosseini

Malek Ashtar University of Technology , fathollahimanoochehr@gmail.com

Abstract: (472 Views)

The lifetime of any system is a random variable that takes a value based on a probability model. Assuming that the probability model of the system lifetime is known, the probability of its operation can be calculated at any moment of time. Reliability is an important parameter in evaluating the quality, safety, performance and efficiency of the system. Accelerated ageing tests are one of the life reliability evaluation tools. These types of tests are used to finding and evaluated product failures. In this article, the reliability of single-base, double-base and triple-base propellants has been calculated using random life data, for this purpose, accelerated ageing test has been used to observe product failure. Changes in weight loss have been investigated as failure data up to 3%. To prove the failure of NC base propellant, Mass Loss methods, FTIR absorption of the tablet and solution, calorimetric technique and functional group absorption in UV technique was used. The chemical lifetime with a failure rate of less than 3% at 25 ℃ temperature was calculated using the data of the above methods for ageing samples and by using the Bertollet equation. Also, in this research, the life reliability was evaluated using the parametric statistical method using the sensor and failure data obtained from the mentioned tests by the Minitab software. The result showed that the NC base propellant is in conformance, with the Weibull distribution function. The reliability of the single-base propellants up to 24 years was evaluated as 98.9%, double-base propellants and triple-base propellants up to 19 years as 99%.

Keywords: Reliability, Life Time, Acclerated test, Propellant, Storage Life

Full-Text [PDF 1021 kb] (19 Downloads)

Type of Study: Research | Subject: ایمنی، حساسيت، آناليز خطر، نگهداری و حمل و نقل مواد پرانرزی
Published: 2024/11/16