scholarly journals Effects of Gyroscopic Coupling and Countertorque in a Fixed-Wing Nano Air Vehicle

2018 ◽  
Vol 55 (1) ◽  
pp. 239-250 ◽  
Author(s):  
Jinraj V. Pushpangathan ◽  
M. Seetharama Bhat ◽  
K. Harikumar
Keyword(s):  
Air Vehicle ◽  
Gyroscopic Coupling ◽  
Nano Air Vehicle

From falling to flying: the path to powered flight of a robotic samara nano air vehicle

2010 ◽  
Vol 5 (4) ◽  
pp. 045009 ◽  
Author(s):  
Evan R Ulrich ◽  
Darryll J Pines ◽  
J Sean Humbert
Keyword(s):  
Air Vehicle ◽  
Nano Air Vehicle

scholarly journals 75-mm Wingspan Fixed-Wing Nano Air Vehicle With a Novel Aircraft Configuration

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 74521-74535 ◽  
Author(s):  
Jinraj V. Pushpangathan ◽  
Harikumar Kandath ◽  
M. Seetharama Bhat
Keyword(s):  
Air Vehicle ◽  
Nano Air Vehicle

scholarly journals Development of a meso-scale cycloidal-rotor aircraft for micro air vehicle application

2017 ◽  
Vol 9 (3) ◽  
pp. 218-231 ◽  
Author(s):  
Elena Shrestha ◽  
Derrick Yeo ◽  
Moble Benedict ◽  
Inderjit Chopra
Keyword(s):  
System Development ◽  
Weight Ratio ◽  
High Strength ◽  
Micro Air Vehicle ◽  
Aerodynamic Efficiency ◽  
Air Vehicle ◽  
Loop Feedback ◽  
Closed Loop Feedback ◽  
Gyroscopic Coupling ◽  
Meso Scale

This paper describes the design, controls system development, and hover testing of a 60 -g meso-scale cycloidal-rotor based (cyclocopter) micro air vehicle. The cycloidal rotor (cyclorotor) is a revolutionary vertical take-off and landing concept with a horizontal axis of rotation. The twin-cyclocopter utilizes two optimized cyclorotors and a horizontal tail rotor used to counteract the pitching moment generated by the cyclorotors. An innovative light-weight and high strength-to-weight ratio blade design significantly reduced cyclorotor weight and improved aerodynamic efficiency. In addition, increasing the virtual camber and incidence (by increasing chord-to-radius ratio) and using a symmetric pitching schedule with a maximum ± 45° pitching amplitude also improved rotor efficiency. Due to gyroscopic coupling and inherent instability of the cyclocopter, a closed-loop feedback control system was implemented using a custom autopilot weighing 1.5 g. The 60-g meso-scale twin-cyclocopter successfully demonstrated stable, sustained hover.

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