نوع مقاله : علمی- ترویجی

نویسندگان

1 کارشـناس ارشـد، پژوهشکده مواد و انرژی، پژوهشگاه فضایی ایران، اصفهان، ایران

2 کارشــناس ارشــد، پژوهشکده مواد و انرژی، پژوهشگاه فضایی ایران، اصفهان، ایران

3 کارشـناس ارشـد، پژوهشکده مواد و انرژی، پژوهشگاه فضایی ایران ، اصفهان، ایران

4 کارشــناس ارشــد،پژوهشکده مواد و انرژی، پژوهشگاه فضایی ایران، اصفهان ، ایران

چکیده

در این مقاله، سامانه‌های میکروپیشرانش مبتنی بر فناوری میکروالکترومکانیکی (MEMS) که به منظور استفاده در ماهواره‌های کوچک طراحی شده‌اند، بررسی و مقایسه می‌شوند. میکروپیشرانش‌های مبتنی بر این فناوری نسبت به سیستم‌های پیشرانش متداول، دارای مزایای متعددی از جمله، اندازه کوچک، تجمیع بالا، تولید انبوه، مصرف توان ناچیز و قیمت پایین می‌باشند. به علاوه، میکروپیشرانش‌های MEMS می‌توانند نیروهای رانش بسیار دقیق، کوچک و تکرارپذیر مورد نیاز برای کنترل وضعیت میکرو و نانوماهواره‌ها را فراهم کنند. این سیستم‌ها شامل میکروپیشرانش گاز سرد،‌ سوخت مایع، سوخت جامد دیجیتالی، جت مقاومتی و الکترواسپری می‍باشند. در مقایسه عملکرد این سیستم‌های میکروپیشرانش مشاهده گردید که میکروپیشرانش سوخت جامد و مایع نسبت به سایر سیستم‌ها،‌ بالاترین نیروی رانش را دارند. همچنین بالاترین تکانة ویژه در میکرورانشگرهای الکترواسپری و کمترین تکانة ویژه در میکروپیشرانش‌های گاز سرد و جت‌ مقاومتی دیده می‌شود. با این حال، سطح بلوغ فناوری در این سامانه‍ها متفاوت است و در طراحی‌های انجام شده با استفاده از فناوری MEMS، چالش‌هایی وجود دارد که هنوز به تحقیقات بیشتر نیاز می‌باشد.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation and Comparison of MEMS-based Micro-propulsions for Small Satellites

نویسندگان [English]

  • Farkhondeh Saliminezhad 1
  • Hamed Sheikhbahaei 2
  • Saeed Hajialigol 3
  • Seyed Alireza Ghorashi 4

1 M.Sc., Materials and Energy Research Institutent, Iranian Space Research Center، Isfahan، Iran

2 M.Sc., Materials and Energy Research Institutent, Iranian Space Research Center, Isfahan, Iran

3 , M.Sc., Materials and Energy Research Institutent, Iranian Space Research Center, Isfahan, Iran

4 , M.Sc., Materials and Energy Research Institutent, Iranian Space Research Center Isfahan, Iran

چکیده [English]

 In this paper, MEMS-based micro-propulsions designed for small satellites are investigated and compared. Micro-propulsions based on this technology have many advantages over conventional systems, including small size, high integration, mass production, low power consumption and minimum cost. In addition, MEMS thrusters can produce very accurate, small, and repeatable thrusts required for controlling micro/nano satellites. These systems include cold gas, liquid propellant, digital solid propellant, resistojet, and electrospray micro thrusters. Solid and liquid propellant systems have the highest thrust among others. At the same time, electrospray microthrusters have the highest specific impulse, while cold gas and resistojet systems have the least. Finally, the technology readiness levels are different in these systems and there are some design challenges in using MEMS technology that still require further research.

کلیدواژه‌ها [English]

  • Micropropulsion
  • Microelectromechanical systems
  • Miniaturization
  • CubeSat
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