Results 21 to 30 of about 6,732 (195)

Flight Mechanics and Control of Tilt Rotor/Tilt Wing Unmanned Aerial Vehicles: A Review [PDF]

open access: yesAUT Journal of Modeling and Simulation, 2021
A literature review of the Tilt Rotor/Tilt Wing (TR/TW) Unmanned Aerial Vehicles (UAVs) is presented in this paper from the flight mechanics and control points of view. Firstly, the advantages as well as the challenges of the TR/TW UAVs are studied, from
Seyed Amin Bagherzadeh   +2 more
doaj   +1 more source

Influence of tilt angle and the number of guide vane blades towards the Savonius rotor performance

open access: yesEnergy Reports, 2021
Additional guide vane (GV) to the Savonius rotor is used to overcome the low rotor efficiency. This study is experimentally carried out to know the influence of guide vane in improving two blades Savonius rotor performance.
Waled Yahya   +5 more
doaj   +1 more source

Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem

open access: yesDrones, 2022
This article presents the four-dimensional surfaces that guide the gait plan for a tilt-rotor. The previous gaits analyzed in the tilt-rotor research are inspired by animals; no theoretical base backs the robustness of these gaits.
Zhe Shen, Yudong Ma, Takeshi Tsuchiya
doaj   +1 more source

Tiltrotor CFD part I: validation [PDF]

open access: yes, 2017
This paper presents performance analyses of the model-scale ERICA and TILTAERO tiltrotors and of the full-scale XV-15 rotor with high-fidelity computational fluids dynamics.
Barakos, George N.   +2 more
core   +1 more source

Hurdle-Hop Simulation of Tilt-Rotor Aircraft Based on Optimal Control Theory

open access: yesXibei Gongye Daxue Xuebao, 2020
Aiming at simulating the hurdle-hop of tilt-rotor aircraft in forward flight near the ground, two models of numerical simulation and analysis based on optimal control theory were proposed.

doaj   +1 more source

Numerical calculation and analysis of aero-acoustic characteristics of tilt rotor in different tilt angles

open access: yesXibei Gongye Daxue Xuebao
The numerical calculation model for the aero-acoustic analysis of a tilt rotor was established by combining the free wake method and the FW-H (Ffowcs Williams-Hawkings) equation.
YUAN Mingchuan   +4 more
doaj   +1 more source

Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method

open access: yesPhotonics, 2021
To study the radar characteristics of the tiltrotor aircraft when considering rotor rotation and tilting actions, a dynamic calculation method (DCM) based on physical optics and physical theory of diffraction is presented. The results show that the radar
Zeyang Zhou   +3 more
doaj   +1 more source

Experimental Investigation of Aerodynamic Interaction in Non-Parallel Tandem Dual-Rotor Systems for Tiltrotor UAV

open access: yesDrones
The distributed electric tilt-rotor Unmanned Aerial Vehicle (UAV) combines the vertical take-off and landing (VTOL) capability of helicopters with the high-speed cruise performance of fixed-wing aircraft, offering a transformative solution for Urban Air ...
He Zhu   +4 more
doaj   +1 more source

EXPERIMENTAL VALIDATION OF TILT-ROTOR AERODYNAMIC PREDICTIONS

open access: yes, 2014
A comparison of experimental data with several numerical predictions of the aerodynamic loads on the ERICA model is presented. The calculations are carried out by several Partners of the NICETRIP consortium, with different codes, turbulence models and grids, with the objective of validating the predictive capability of the CFD tools.
J. Decours   +5 more
openaire   +4 more sources

Control and flight test of a tilt-rotor unmanned aerial vehicle

open access: yesInternational Journal of Advanced Robotic Systems, 2017
Tilt-rotor unmanned aerial vehicles have attracted increasing attention due to their ability to perform vertical take-off and landing and their high-speed cruising abilities, thereby presenting broad application prospects.
Chao Chen   +3 more
doaj   +1 more source

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