Results 201 to 210 of about 3,220 (257)

Analysis and Compensation of Lorentz Force Magnetic Bearing Magnetic Flux Density Uniformity Error. [PDF]

Sensors (Basel)
Yu C, Cai Y, Wang W, Han W, Yin Z, Han W.   +5 more
europepmc   +1 more source

Nonlinear controller design for unmanned helicopter flight platform. [PDF]

Sci Rep
Ruchun W.
europepmc   +1 more source

Structural basis for co-translational assembly of homo-oligomeric proteins

Koubek J, Filbeck S, Kopetschke S, Schmitt J, Pfeffer S, Kramer G, Bukau B.   +6 more
europepmc   +1 more source

Dynamic Performance Investigation for Tilt-rotor Aircraft [PDF]

Proceedings of the Vertical Flight Society 76th Annual Forum, 2020
The tiltrotor aircraft has the capability to extend its performance characteristics compared to the conventional helicopter. However, the performance features, namely the maximum flight duration and flight range, are determined by a series of factors, such as the nacelle angle, the aerodynamic interference, and the effect of the fuel ...
Yuan, Ye, Thomson, Douglas, Anderson, David   +2 more
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Study on the effect of tilting-rotor structure on the lift of small tilt rotor aircraft

2017 2nd International Conference on Advanced Robotics and Mechatronics (ICARM), 2017
In this paper, the influence of the tilting-rotor structure parameters on the aerodynamic characteristics of a small tilt rotor unmanned aerial vehicle (UAV) is studied. The simplified model of tilt rotor unmanned aerial vehicle (UAV) is established by using SolidWorks software, and the model is divided into unstructured grid by ICEM software. Finally,
Xiang Zhang, Weiqing Xu, Yan Shi 0003, Maolin Cai, Fengyun Li   +4 more
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Control of a PVTOL with tilting rotors

2019 International Conference on Unmanned Aircraft Systems (ICUAS), 2019
This paper introduces the modeling and control of a Planar Vertical Take Off and Landing (PVTOL) aircraft with tilting rotors. The mathematical model is obtained step by step using the Newton-Euler methodology. Its nonlinear dynamics of this aircraft are analyzed and controlled using a nonlinear and a linear algorithm. The controllers were validated in
A. Offermann, P. Castillo, J. De Miras
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Modeling and control of an interactive tilt-rotor MAV

2017 Workshop on Research, Education and Development of Unmanned Aerial Systems (RED-UAS), 2017
The main goal of this paper is to model and control a tilt-rotor aerial robot for interactive operations via a 1DOF robotic manipulator. The modeling is derived by means of the Euler-Lagrange formulation, providing couplings between the robotic manipulator and the rotorcraft. The aerial robot is fully actuated and features thrust vector control, having
Nieto Hernandez, David, Escareno, Juan Antonio, Mendes-Barrios, Fernando, Boussaada, Islam, Langarica Córdoba, Diego   +4 more
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A tilt-rotor actuator

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2009
A ballscrew actuator for tilt-rotor and pitch trim applications is described that provides structural and operational redundancy in respect of any single failure mode. It is powered by two hydraulic motors, operated separately. Configuration layout, dual-path constructions, and component details are illustrated.
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