نوع مقاله : مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسندگان

1 پژوهشگر، پژوهشگاه هوافضا، وزرات علوم، تحقیقات و فناوری، تهران، ایران

2 استادیار، گروه علوم فضایی، پژوهشکده سامان های فضانوردی، پژوهشگاه هوافضا، وزارت علوم، تحقیقات و فناوری، تهران، ایران

3 استادیار، گروه علوم فضایی، پژوهشکده سامانه های فضانوردی، پژوهشگاه هوافضا، وزارت علوم، تحقیقات و فناوری، تهران، ایران

4 استادیار، گروه علوم فضایی، پژوهشکده سامانه های فضانوردی، پژوهشگاه هوافضا، وزارت علوم، تحقیقات و فناوری ، تهران، ایران

چکیده

در این پژوهش طراحی و جانمایی انژکتور، محفظه تجزیه و نازل یک نمونه زمینی میکرورانشگر تک‌مولفه‌ای هیدرازینی 10 نیوتنی انجام شده است. انژکتور به عنوان اولین جزء میکرورانشگر، از نوع جریان مستقیم یا کاپیلاری به کمک نرم افزار Fluent طراحی گردید که توانایی تامین دبی جرمی مورد نیاز میکرورانشگر (5 گرم بر ثانیه) را دارا باشد. محفظه تجزیه جزء بعدی می-باشد که حاوی گرانول‌های کاتالیست است و ابعاد آن بر مبنای تجزیه کامل هیدرازین (تا مقدار حدی کسر جرمی) انتخاب گردید. نازل تخلیه به عنوان آخرین جزء میکرورانشگر، با استفاده از نرم‌افزار RPA طراحی شد. صحت طراحی با این نرم‌افزار توسط یک کد عددی مورد بررسی قرار گرفت. این کد توانایی محاسبه ابعاد محفظه تجزیه را بر اساس مقدار تجزیه هیدرازین داراست. بر همین اساس این نتیجه حاصل شد که نتایج هر دو روش طراحی با دقت بسیار بالایی با یکدیگر هم‌خوانی دارند. پس از اتمام طراحی، جانمایی تمام اجزاء انجام شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Design and Configuration of Ground Sample Components of Low Propulsion Monopropellant Thruster Using Some Engineering Software

نویسندگان [English]

  • Sajjad Davari 1
  • Hadiseh Karimaei 2
  • Mohammad Reza Salimi 3
  • Hassan Naseh 4

1 Researcher, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

2 Assistant Professor, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

3 Assistant Professor, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

4 Assistant Professor, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

چکیده [English]

Monopropellant thruster are used to inject a satellite into orbit or control its position on three axes in space missions. One of them is hydrazine thruster which is widely used. In this research, design of the injector, decomposition chamber and nozzle of a 10N hydrazine monopropellant thruster have been performed. The capillary injector was designed using Fluent software for this thruster which was able to supply the mass flow rate of the thruster (5 gr/sec). The decomposition chamber contains catalyst granules and its dimensions were selected based on the complete decomposition of hydrazine. The nozzle was designed by RPA software. The validation of the design with RPA software was checked by a numeric code. This code was able to calculate the dimensions of the decomposition chamber based on the amount of hydrazine decomposition. Accordingly, the results of both design methods are strongly consistent with each other. At the end of the design, the final thruster design and drawings were prepared.

کلیدواژه‌ها [English]

  • Hydrazine Monopropellant Thruster
  • Capillary Injector
  • Decomposition Chamber
  • Nozzle
  • Catalyst
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