نوع مقاله : علمی- ترویجی

نویسندگان

1 دانشیار، گـروه مهندسـی شیمی، دانشکده و پژوهشـکده فنـی و مهندسـی،دانشگاه جامع امام حسین (ع)،تهران، ایران

2 دانشجوی کارشناسی ارشد، گروه مهندسی شیمی، دانشکده و پژوهشکده فنی و مهندسی، دانشگاه جامع امام حسین(ع)،تهران، ایران

چکیده

نرخ سوزش در تعیین رفتار بالستیکی و عملکردی پیشرانه‌های راکت جامد نقش بسیار مهمی ایفا می‌کند. در این مقاله تأثیر عوامل مختلفی از جمله فشار محفظه‌ی احتراق، دمای اولیه گرین پیشرانه، نسبت سوخت به اکسیدکننده، ترکیب درصد اجزای پیشرانه، اندازه ذرات اکسیدکننده، اندازه‌ی راکت موتور و اندازه‌ی گرین بر نرخ سوزش بررسی شده است. برای این بررسی، از فناوری‌ها، روش‌ها و تجهیزات آزمایشگاهی مختلفی استفاده می‌شود که از مهمترین آن‌ها می‌توان به روش‌های (کراوفورد، Closed Vessel، اندازه‌گیری فراصوت، مایکروویو، پرتونگاری اشعه‌ی ایکس، اندازه‌گیری ظرفیت الکتریکی پلاسما، تکنیک‌های نوری، سیستم‌های انتشار صوتی) اشاره نمود. کلیه روش‌های مذکور، روش‌هایی است که در کشورهای پیشرو برای اندازه‌گیری نرخ سوزش پیشرانه‌ها استفاده شده است. با مقایسه مزایا و معایب هر کدام از این فناوری‌ها، تجهیزات و روش‌ها در تعیین نرخ سوزش پیشرانه‌های جامد، می‌توان تجهیزات و روش مطلوب را با در نظرگرفتن جوانب کلی اعم از (مسائل عملیاتی، اقتصادی، کاربردی بودن، ایمنی و ...) انتخاب نمود.

کلیدواژه‌ها

عنوان مقاله [English]

Technologies and New Methods for Determining the Burning Rate of Solid Propellants

نویسندگان [English]

  • Mohammad Ali Dehnavi 1
  • Reza Emami 2

1 Associate Professor, Department of Chemical Engineering, Faculty of Engineering, Imam Hossein University, Tehran, Iran

2 M. Sc. Student, Department of Chemical Engineering, Faculty of Engineering, Imam Hossein University, Tehran, Iran

چکیده [English]

The burning rate plays animportant role in determining the performanceandballistic behavior of solid rocket propellant. In this paper, the effect of various factorson burning rate, such as combustion chamber pressure, poropellant grain initial temperature, fuel/oxidizer ratio, composition of the components propellant, oxidizer particle size, motor rocket size, and grain size have been investigated.For this purpose, technologies, methods, and various laboratory equipment are used, the most important of which are the methods such as Crawford, Closed Vessel, Ultrasound Measurement, Microwave, X-Ray X-ray, Plasma Electrical Capacity Measurement, Optical Techniques, Audio Publishing Systems. All of these methods are used in leading countries to measurethe propellants burning rate.Consequently, the appropriate method andequipmentconsidering general aspects (operational, economic, functional, safety, etc.) can be selected, comparing the advantages and disadvantages of each above-mentioned technologies, equipment and methods forthedetermination ofthe burning rate of solid propellants.

کلیدواژه‌ها [English]

  • Burning rate
  • Solid Propellant
  • Crawford Bomb
  • Subscale Motor
  • Propellant Grain
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