تعیین میراگر پیچشی مناسب جهت کاهش دامنه ارتعاشات موتور هواپیماهای فوق سبک

نوع مقاله : مقاله علمی پژوهشی

نویسندگان

1 دکتری، مهندسی مکانیک، دانشگاه جامع امام حسین(علیه السلام)، تهران، ایران

2 دانشیار، گروه مهندسی مکانیک، دانشگاه جامع امام حسین(علیه السلام)، تهران، ایران

3 کارشناسی ارشد، مهندسی مکانیک، دانشگاه جامع امام حسین(علیه السلام)، تهران، ایران

چکیده

در این مقاله به تعیین میراگر پیچشی مناسب برای موتور هواپیماهای فوق سبک و میزان تأثیر آن‌ ها در کاهش ارتعاشات با ترکیب سه روش تجربی، تحلیل و عددی پرداخته ‌شده است. ابتدا با تحلیل دینامیکی و کد نویسی در نرم ‌افزار متلب، گشتاورهای سیستم و فشار گاز پیستون با کمتر از 2 درصد اختلاف با نتایج تجربی اعتبارسنجی شدند. سپس حداکثر میزان جابجایی زاویه ‌ای در بالاترین دور، از روش عددی و تحلیلی صحت ‌سنجی و فرکانس‌ های طبیعی به دست آمدند. در نهایت معادله‌ تعیین ضریب میرایی، استخراج شد. نتایج نشان داد که استفاده از میراگر تا 40 درصد از دامنه ارتعاشات سیستم می کاهد.

کلیدواژه‌ها

موضوعات


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