نوع مقاله : علمی- ترویجی

نویسندگان

1 دانشیار ، مجتمع دانشگاهی هوافضا، دانشگاه صنعتی مالک اشتر، تهران، ایران.

2 دانشجوی کارشناسی ارشد، ،مجتمع دانشگاهی هوافضا،دانشگاه صنعتی مالک اشتر، تهران، ایران.

چکیده

پپرنده‌های بدون سرنشین (کوادکوپتر، هگزاکوپتر، اوکتاکوپتر و غیره) می‌توانند منبع تولیدکننده سرو صدای شدید باشند. سرو صدای تولیدی زیاد این پرنده‌ها آن‌ها را برای مناطق با جمعیت بالا به ویژه در شرایط بلند شدن از زمین و فرود آمدن یا پرواز در سطوح پایین نامناسب می‌کند. این پژوهش به بررسی روش‌ها و ارائه راهکارهایی جهت کاهش یا از بین بردن سرو صدای تولیدی پهپادها می‌پردازد. برای کاهش سرو صدای تولیدی هر دو روش فعال و غیرفعال در نظر گرفته شده است. راهکارهایی همچون صدا خفه‌کن برای موتورهای پیستونی، پروانه از نوع Q-tip، افزایش تعداد پره‌های پروانه، مرزهای جاذب و بازتاب‌دهنده، پره‌های داکت شده، داکت‌های جاذب صوت، همگام سازی، کاهش نویز چند کاناله فعال به همراه سیستم ثانویه تعبیه شده به صورت مدور در اطراف پروانه و سیستم‌های با پروانه‌های مغناطیسی معرفی شده‌اند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Methods for Attenuation of Unmanned Aerial Vehicle Noise

نویسندگان [English]

  • Mostafa Mahmoodi 1
  • Ali Moradi 2

1 Associet Professor, Aerospace University Complex, Malek Ashtar University, Tehran, Iran.

2 M.SC student. Aerospace University Complex, MalekAshtar University, Tehran, Iran.

چکیده [English]

Unmanned aerial vehicles (UAVs) like drones (quadcopters, hexacopters, octocopters, etc.) can be a source of significant acoustic noise. High noise makes them less suitable for use in densely populated urban areas, particularly during take-off, landing, and low-level flight, due to the noise annoyance. This paper reviews the methods and proposes some concepts for the attenuation of UAV noise. Both passive and active solutions are considered. Solutions with piston engine silencer, Q-tip propeller, more propeller blades, absorptive and reflective barrier, ducted propeller, sound absorbing ducts, synchrophaser, multichannel active noise cancellation (ANC) system with secondary sources circularly arranged around the propeller and the system with magnetically excited propeller blades are mentioneds

کلیدواژه‌ها [English]

  • Unmanned Aerial Vehicle
  • Noise
  • Propeller
  • Sound Absorption
  • Active Noise Control
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