Konstrukcija kontra-rotacijskega gonila za pogon radijsko vodenih letal

Mencin, Timotej (author), Nagode, Marko (mentor), Oman, Simon (comentor)

Ob vrtenju propelerja se pojavijo nezaželeni vplivi: učinek momenta propelerja, učinek vijačnice, žiroskopski učinek in drugi. Da olajšamo (ali celo izničimo) te stranske učinke, na isto os vgradimo dva propelerja, vrteča se vsak v svojo smer. To delo se ukvarja s konstrukcijo zobniškega gonila, ki to omogoča in bi ga lahko vgradili na radijsko vodeno akrobatsko letalo. Izbrali smo koncept rešitve z notranjo in zunanjo zobniško dvojico ter ga ovrednotili glede na motor, ki ga imamo na voljo. Ugotovili smo, da je naš dizajn možno izdelati, vendar so zastavljeni cilji (masa 850 g, cena pod 600 EUR, kompaktnost) težko dosegljivi z motorjem, ki ga imamo na voljo. Ocenili smo, da bi bilo z uporabo primernejšega motorja z manjšim številom vrtljajev zastavljene cilje bistveno lažje realizirati.

• Language: Slovenian
• Keywords: radijsko-vodena letala, propelerski pogoni, vrtenje propelerjev, notranja ozobja, poševna ozobja, profilni pomiki, zobniki, gredi, ležaji
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [T. Mencin]
• Year: 2019
• Number of pages: XV, 49 f.
• PID: 20.500.12556/RUL-107640
• UDC: 629.7:623.746(043.2)
• COBISS.SI-ID: 16608539
• Publication date in RUL: 09.05.2019

Secondary language

• Language: English
• Title: Construction of a contra-rotating drive for propulsion of radio controlled aircraft

Abstract

As a propeller spins, unwanted side effects can occur: propeller torque effect, corkscrew effect, gyroscopic effect, etc. To compensate (or maybe even eliminate) these side effects, two propellers can be mounted, each spinning in its own direction, on the same axis. This paper is dealing with a construction of a gear drive which enables this and could be mounted on an acrobatic radio-controlled aircraft. We chose a concept of solution with an internal and external gear pairing and evaluated it considering the motor we have available. We discovered that our design could be manufactured, but our set goals (mass 850g, price under 600 EUR, compact size) were difficult to achieve with the motor we have available. We concluded that we would have to take into account a more suitable motor with fewer revolutions per minute.

• Keywords: radio-controlled aircraft, propeller propulsions, propeller spinning, internal gearings, helical gearings, profile shifts, gears, shafts, bearings