Proceedings ArticleDOI
Analytical Formulation Of Heave-Yaw Modes For A Coaxial Rotor Micro Aerial Vehicle
Puneet Singh,Comandur Venkatesan +1 more
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TLDR
A technique for control mixing is proposed for the ease of pilot control and also closed loop design of coaxial rotor helicopters at the Micro Air Vehicle scale based on the aerodynamic interaction of the two rotors.Abstract:
Coaxial rotor helicopters at the Micro Air Vehicle scale are becoming widely accepted as an easy to fly and stable configuration. This study models the heave and yaw modes of the vehicles dynamics, based on the aerodynamic interaction of the two rotors. The linearized model is represented in state space with a closed form solution. It is then evaluated for its stability and control response. The coupling between the height and heading transient response is evaluated. Based on these characteristics, a technique for control mixing is proposed for the ease of pilot control and also closed loop design. The steady state values of the model are validated using typical parameters of a commercially available vehicle. The predicted thrust sharing between the rotors is found to match with that reported in experiments. The effect of the interaction between the two coaxial rotors on the system performance and stability is analyzed.read more
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Proceedings ArticleDOI
Comprehensive Modeling and Analysis of an Unmanned Coaxial Helicopter
Xiaming Yuan,Jihong Zhu +1 more
TL;DR: A complete dynamic model for an unmanned coaxial helicopter is established which is proven accurate but simple enough for dynamic analysis and real time simulation.
References
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Book
Modern control engineering
TL;DR: This comprehensive treatment of the analysis and design of continuous-time control systems provides a gradual development of control theory and shows how to solve all computational problems with MATLAB.
A Survey of Theoretical and Experimental Coaxial Rotor Aerodynamic Research
TL;DR: In this paper, the aerodynamic issues peculiar to coaxial rotors were surveyed by surveying American, Russian, Japanese, British, and German research, including the effects of having no tail rotor.
Journal ArticleDOI
Airfoil Section Characteristics at a Low Reynolds Number
TL;DR: In this paper, the aerodynamic characteristics of airfoils operating at Re = 4 X 10 3 were examined, varying the parameters related to the airfoil shape such as thickness, camber, and roughness.
Journal ArticleDOI
Design, Analysis and Hover Performance of a Rotary Wing Micro Air Vehicle
TL;DR: Results from this initial feasibility study suggest that it is possible to develop a small scale coaxial micro rotorcraft weighing approximately 100 grams, and that available moments are appropriate for roll, yaw and lateral control.
MonographDOI
Introduction to the design of fixed-wing micro air vehicles : including three case studies
TL;DR: In this paper, the authors present an overview of the development of micro-air vehicles with in-flight adaptive wing and their integration into the MITE-RIGID-WAV.