International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 06 | Jun 2025
p-ISSN: 2395-0072
www.irjet.net
Design of Cyclorotor Propeller with Out runner Ring gear Mechanism Amit Patil1, Siddhesh Pawar1, Priyanshu Randive1, Prashil Rangari1, Sushank Sisodiya2, Dr. Priya Gajjal3 1Undergraduate Student, AISSMS College of Engineering, Pune-01, Maharashtra, India. 2Graduate Student,
3Professor, Dept. of Mechanical Engineering, AISSMS college of Engineering Pune-01, Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - This abstract introduces a novel design
pitch control has posed significant engineering challenges, often leading to increased weight and mechanical complexity. This innovative design concept directly addresses these hurdles by integrating an outrunner rotor mechanism, where the entire outer rotating structure of the cyclorotor becomes the primary moving component. This outer structure is integral with, or directly driven by, a large ring gear, which then efficiently transfers power and directly houses or actuates the intricate blade pitching kinematics. This revolutionary approach profoundly simplifies the mechanical power transmission and blade control systems compared to traditional internal drives, leading to a substantial reduction in overall weight and a marked increase in efficiency due to fewer moving parts and minimized friction. The result is a more robust, compact, and reliable propulsion unit, poised to unlock the full potential of cyclorotor technology for a new generation of advanced aerial and marine applications demanding unparalleled agility and performance.
methodology for cyclorotor propellers, focusing on the integration of an innovative outrunner ring gear mechanism. Traditional cyclorotor designs often face challenges related to the complexity, weight, and efficiency of their internal blade pitching and power transmission systems. This proposed design process specifically addresses these limitations by leveraging an outrunner configuration where the ring gear, typically an internal component, acts as the primary rotating element, encapsulating the blade pitching kinematics. This unique approach simplifies the mechanical linkage, potentially reducing overall mass and enhancing structural integrity. The methodology emphasizes a holistic design approach, coupling aerodynamic performance optimization with the mechanical integration of the outrunner ring gear to achieve superior thrust vectoring capabilities, improved power-to-thrust ratios, and enhanced control authority across diverse operational envelopes. The development of this new design process aims to significantly advance cyclorotor technology, paving the way for more compact, efficient, and reliable propulsion systems in various aerospace and maritime applications.
1.1 Problem Statement The Problem statement of this paper is to provide a method to design outrunner based cyclorotor mechanism for industrial, Aerospace or in marine sciences or any field requiring small modular cyclorotor propellers.
Key Words: cyclorotor propellers, outrunner, ring gear, Aerodynamic, performance, optimization
1.INTRODUCTION
1.2 METHODOLOGY
Cyclorotor propellers stand apart as exceptionally versatile propulsion devices, fundamentally generating thrust through an array of blades that rotate around a central axis, oriented parallel to it. What makes them truly remarkable is their ability to cyclically vary the pitch angle of these individual blades as they revolve, enabling instantaneous 360° thrust vectoring. This unparalleled capability provides exceptional maneuverability, allowing for precise control and rapid changes in direction, which is critical for applications like high-performance drones, urban air mobility vehicles, and agile marine vessels. Furthermore, their inherent design often results in significantly lower noise emissions compared to conventional propellers, making them ideal for urban environments or stealth applications. Traditionally, the complex mechanical linkages required for both power transmission and precise blade
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The process of designing a cyclorotor consists of three main fields, Aerodynamics and Kinematics. So, in this paper we will try to solve those same and derive other mathematic required. In this paper we will not discuss about dynamics and vibrations.
2. CALCULATION The following calculation is will tell us about dimensions and other important information required for designing a outrunner-link cyclorotor propeller mechanism using ring gear.
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