Results 251 to 260 of about 25,565 (312)
Green mycosynthesis of ZnO nanoparticles enhances antifungal defense against Fusarium equiseti through metabolic and gene expression modulation. [PDF]
Discov NanoEl-Morsy EM, Elmalahy YS, Hafez EE.
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Structural basis for co-translational assembly of homo-oligomeric proteins
Koubek J +6 more
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Interrogating a single light-driven rotary molecular motor with force
Duwez A +5 more
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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 +2 more
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Volume 3: Vibration in Mechanical Systems; Modeling and Validation; Dynamic Systems and Control Education; Vibrations and Control of Systems; Modeling and Estimation for Vehicle Safety and Integrity; Modeling and Control of IC Engines and Aftertreatment Systems; Unmanned Aerial Vehicles (UAVs) and Their Applications; Dynamics and Control of Renewable Energy Systems; Energy Harvesting; Control of Smart Buildings and Microgrids; Energy Systems, 2017
In this paper, the control maneuvering, and performance analysis of a tilting-rotor quadcopter during autonomous flight is presented. Unlike traditional quadcopters, a tilting-rotor quadcopter provides additional actuated controls as the propeller motors are actuated for tilt which can be utilized to improve efficiency of the aerial vehicle during ...
Rumit Kumar +4 more
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In this paper, the control maneuvering, and performance analysis of a tilting-rotor quadcopter during autonomous flight is presented. Unlike traditional quadcopters, a tilting-rotor quadcopter provides additional actuated controls as the propeller motors are actuated for tilt which can be utilized to improve efficiency of the aerial vehicle during ...
Rumit Kumar +4 more
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Tilting Curve Design of a Novel Tilt-rotor UAV Based on Rotor/Wing Interference Model
2020 Chinese Automation Congress (CAC), 2020This paper describes a method of designing and optimizing the tilting curve based on the rotor/wing interference model. Considering the interference between the rotors and wings, the slip theory is used to build the aerodynamic model in the transition mode.
Huaping Huang +3 more
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Tilt Rotor Broadband Hover Aeroacoustics
Journal of Fluids Engineering, 1993To improve the acoustic characteristics of tilt rotor aircraft, the dominant noise mechanisms must be understood. Toward this goal, a method was developed to identify and predict the dominant broadband noise mechanism of a hovering tilt rotor. Predictions are presented for a range of azimuthal observer locations and polar observer angles and are ...
C. D. Coffen, A. R. George
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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. Comparison is made with earlier designs
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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. Comparison is made with earlier designs
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SAE Technical Paper Series, 1983
<div class="htmlview paragraph">This paper provides an overview of the results of on-going research investigations associated with the XV-15 program. The XV-15 data and an understanding of the technological elements that go into tilt rotor design can provide a series of benchmark points from which to proceed with new design.
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<div class="htmlview paragraph">This paper provides an overview of the results of on-going research investigations associated with the XV-15 program. The XV-15 data and an understanding of the technological elements that go into tilt rotor design can provide a series of benchmark points from which to proceed with new design.
openaire +1 more source