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روش طراحی سیستمی سامانه مدیریت پیشرانه (PMD) در شرایط جاذبه صفر

نویسندگان
حسن ناصح 1
علی عالیپور 2
1 پژوهشگاه هوافضا
2 کارشناسی ارشد مهندسی هوافضا
چکیده
هدف از ارائه مقاله، روش طراحی سیستمی سامانه مدیریت پیشرانه یا PMD مخزن حامل سوخت هیدرازین برای استفاده در شرایط جاذبه ناچیز (صفر) می‌‌باشد. برای این منظور، روندنمای طراحی سیستمی پیشنهادی برای طراحی سامانه مدیریت پیشرانه، دارای سه مرحله اصلی می‌‌باشد که عبارتنداز : مرحله اول، طراحی و مدل‌سازی مخزن؛ مرحله دوم، طراحی و مدل‌سازی سامانه مدیریت پیشرانه و شبیه‌سازی و مرحله سوم، تحلیل رفتار سوخت درون مخزن. در این روندنما با توجه به ورودی‌های ماموریتی مربوط به سامانه، طراحی مخزن، سامانه مدیریت پیشرانه و تحلیل رفتار سوخت درون مخزن به صورت جامع پرداخته شده‌است به گونه‌ای که در هر گام در صورتیکه نتایج تایید نشود، با تغییر پارامترهای مرتبط، شرایط مطلوب احراز می ‌شود. مدل‌سازی اولیه مخزن و سامانه مدیریت پیشرانه در نرم افزار سالیدورک صورت پذیرفته‌است. شبیه-سازی‌های عددی به منظور بررسی عملکرد PMD و اثبات پدیده مویینگی برای سوخت‌رسانی پایدار در شرایط بی‌وزنی انجام شده‌است. از روش‌های عددی برای تحلیل مخزن و رفتار سوخت درون مخزن به همراه PMD برای بهینه‌سازی پارامترهای طراحی سامانه استفاده شده‌است. بدینصورت که، برای بررسی رفتار سوخت، سامانه مدیریت پیشرانه با استفاده از روش حجم سیال (VOF) در نرم افزار انسیس مدل‌سازی، شبکه‌بندی و تحلیل شده‌‌است. پارامترهای بهینه‌سازی PMD با هدف دست‌یابی به بیشترین مقادیر دبی جرمی و نرخ حجمی جریان صورت می‌‌پذیرد. به عبارت دیگر، هدف دستیابی به بیشترین مقادیر سوخت ورودی به PMD می‌‌باشد. در نهایت، صحه‌گذاری نتایج (عملکرد سامانه مدیریت پیشرانه) با مقایسه با نتایج تجربی و نمونه موجود موجود صورت ‌پذیرفته‌است.
کلیدواژه‌ها
طراحی سیستمی
سامانه مدیریت پیشرانه (PMD)
تحلیل عددی
هیدرازین
مخزن سوخت

عنوان مقاله English

Propellant Management Device (PMD) System Design Methodology in Zero Gravity Condition

نویسنده English

Ali Alipour 2
2 Aerospace Engineering M.Sc. graduate
چکیده English

The purpose of this article is to system design methodology of Propellant Management Device (PMD) for hydrazine fuel tank which used in low (zero) gravity conditions. To this end, the suggestion system design flowchart has three main steps that concluded: step one, Tank design and modeling; step two, PMD design and modeling and step three, stored fuel treatment simulation and analysis. In the design flowchart has performed the result of each step based on mission inputs. Therefore, rejected results in each step led to vary the related parameters. Thus Solid Works software is used to primary PMD and tank modeling. Then, numerical simulation is performed to consider PMD's performance and to illustrate the capillary phenomenon for continues fuel transferring in zero-gravity conditions.Also, numerical methods are used to analysis of the tank and the fuel behavior inside the tank with PMD to optimize system design parameters. Hence, Ansys software used to finalize modelling, analysis, meshing and consideration of fuel behavior in PMD by utilizing the Volume Of Fluid (VOF) method. The optimal system parameters related to specifications of PMD with maximum performance of mass and volume flow rates in zero gravity. In conclusion, by comparing the results (PMD performance) with experimental and existing results will be verified.

کلیدواژه‌ها English

System design
Propellant management Device (PMD)
Numerical analysis
Hydrazine
Fuel tank
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مهندسی مکانیک مدرس
دوره 18، شماره 2
اردیبهشت 1397
صفحه 84-94