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Design and fabrication of coaxial micro helicopter [PDF]
, 2012 In this thesis the design of a coaxial micro helicopter is presented and based on the design, a model is fabricated. The thesis starts with the introduction on the previous models of micro helicopters like the Coax and the Epson.
Mishra, Pratik
core
Aerodynamic Layout Design of a Compound Conventional Rotor High-Speed Unmanned Helicopter
DronesHigh-speed capability is a defining feature of next-generation helicopters, enabling time-sensitive missions. This paper compares three high-speed configurations: tiltrotor, coaxial rigid rotor, and compound conventional rotor.
Long He +5 more
doaj +1 more source
Научный вестник МГТУ ГАThe vortex ring states are observed when the rotor is flowed at positive angles of attack. For the main rotor, these conditions are realized during a steep descent of the helicopter at low speeds.
P. V. Makeev +3 more
doaj +1 more source
Vibration and Performance Analyses Using Individual Blade Pitch Controls for Lift-Offset Rotors
International Journal of Aerospace Engineering, 2019 This work attempts to reduce the hub vibratory loads of a lift-offset rotor using IBC (individual blade pitch control) in high-speed forward flight. As a lift-offset rotor for the present study, the rigid coaxial rotor of a XH-59A compound helicopter is ...
Jae-Sang Park +4 more
doaj +1 more source
A Vectoring Thrust Coaxial Rotor for Micro Air Vehicle: Modeling, Design and Analysis [PDF]
, 2013 The growing interest of rotary wing UAVs, for military and civilian applications, has encouraged designers to consider miniaturized configurations, more efficient in terms of endurance, payload capability and maneuverability. The purpose of this paper is
Moschetta, Jean-Marc, Prothin, Sebastien
core +2 more sources
AerospaceThis paper proposes an advanced model predictive control (MPC) scheme for the attitude tracking of coaxial drones under wind disturbances. Unlike most existing MPC setups, this scheme embeds steady-input, steady-output, and steady-state conditions into ...
Zhi Chen, Xiangyu Lin, Wanyue Jiang
doaj +1 more source
Analysis of Flapping Motion of Rotors of Small Coaxial Helicopter
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 2006 We analyzed a small coaxial helicopter developed for entertainment in 2002. The upper and lower rotors are rigid rotors. The upper rotor is connected to a stabilizer bar. The cyclic pitch of the upper rotor is controlled by the stabilizer bar when the attitude of the helicopter is varied. The angle between the upper rotor and the stabilizer bar is 41°.
Shigeru SUNADA +3 more
openaire +2 more sources
Dynamic modeling and analysis of the rotor-stator coupling system of a coaxial contra-rotating gearbox. [PDF]
Sci Rep, 2023 Zhang D, Cui J, Zhu R, Li M.
europepmc +1 more source
A Dynamic RCS and Noise Prediction and Reduction Method of Coaxial Tilt-Rotor Aircraft Based on Phase Modulation. [PDF]
Sensors (Basel), 2022 Wang Z, Huang J, Yi M, Lu S.
europepmc +1 more source