مروری بر روند آزمایش‌های پروازی فلاتر

نوع مقاله : علمی- ترویجی

نویسنده

استادیار دانشکده فنی و مهندسی دانشگاه آزاد اسلامی واحد نجف آباد

چکیده

فلاتر یک پدیده ناخواستة ناشی از برهم‌کنش نیروهای آیرودینامیک، الاستیک و اینرسی است. این پدیده باعث به‌وجود آمدن نوسانات ناپایدار سازه‌ای می‌شود که اغلب منجر به شکست سازه خواهد شد. اغلب هواپیماهای پرسرعت و یا الاستیک از نظر فلاتر حساسیت بالایی دارند. در این پژوهش روش‌های گسترش یافته در چند دهة اخیر در زمینة آزمایش پروازی فلاتر مرور خواهد شد. سیستم‌های تحریک سازه، سیستم‌های اندازه‌گیری، پردازش دیجیتال داده‌ها و روش‌های استخراج پارامترهای فرکانسی و میرایی مورد بررسی قرار خواهند گرفت. همچنین، تجربه‌های عملی انجام شده در این راستا ذکر و وضعیت کنونی این زمینه بیان خواهد شد.

کلیدواژه‌ها


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