Results 31 to 40 of about 123 (110)

Investigations on Trimming Strategy and Unsteady Aerodynamic Characteristics of Tiltrotor in Conversion Procedure

Aerospace
Numerical simulations were conducted to analyze the unsteady aerodynamic characteristics of a tiltrotor aircraft with different conversion strategies.
Guoqing Zhao, Zhuangzhuang Cui, Qijun Zhao, Xi Chen, Peng Li   +4 more
doaj   +1 more source

Dynamic Electromagnetic Scattering Simulation of Tilt-Rotor Aircraft in Multiple Modes

Sensors, 2023
To study the electromagnetic scattering of tilt-rotor aircraft during multi-mode continuous flight, a dynamic simulation approach is presented. A time-varying mesh method is established to characterize the dynamic rotation and tilting of tilt-rotor ...
Zhongyang Fei, Yan Yang, Xiangwen Jiang, Qijun Zhao, Xi Chen   +4 more
doaj   +1 more source

Tilting rotor aerodynamic performance prediction based on vortex particle method coupled with large eddy simulation [PDF]

AIP Advances
Tiltrotors are crucial in a low-altitude economy, combining the advantages of fixed-wing aircraft and rotorcraft. However, traditional numerical simulation methods are not accurate enough when simulating the transition state of a tiltrotor, especially ...
Yaolong Liu, Xue Chen, Jiechao Zhang, Xuanyu Yao, Yunkun Man, Yao Zheng   +5 more
doaj   +1 more source

PairTilt: Design and Control of an Active Tilt‐Rotor Quadcopter for Improved Efficiency and Agility

Advanced Intelligent Systems, Volume 7, Issue 7, July 2025.
PairTilt is an actuated tilt‐rotor unmanned aerial vehicle capable of active shape reconfiguration, balancing simplicity, efficiency, and agility. Its H‐shaped frame incorporates pairwise tiltable rotors, which reduce gyroscopic torque and decouple key dynamics, enhancing maneuverability and reducing drag.
Jerry Tang, Mark W. Mueller
wiley   +1 more source

Transition Process Control of Tiltrotor Aircraft Based on Fractional-Order Model Reference Adaptive Control

Machines
To address the critical challenge of controlling tiltrotor aircraft during transition mode, this paper proposes a fractional-order model reference adaptive control (FO-MRAC) method based on the unique modeling of the tiltrotor aircraft. A nonlinear model
Junkai Liang, Hui Ye, Yaohua Shen, Dawei Wu   +3 more
doaj   +1 more source

A Review of Modeling and Control Techniques for Unmanned Aerial Vehicles

Engineering Reports, Volume 7, Issue 6, June 2025.
By systematically classifying UAV modeling techniques and comparing control methods, this paper addresses a notable gap in the current literature. Furthermore, it highlights emerging trends and challenges in UAV control systems, providing valuable insights to guide future research toward enhancing the stability, efficiency, and adaptability of ...
Elisabeth Andarge Gedefaw, Nardos Belay Abera, Chala Merga Abdissa   +2 more
wiley   +1 more source

The key technologies of tiltrotor pylon conversion actuator

Hangkong gongcheng jinzhan
Tiltrotor which combines the advantages of helicopters and fixed wing aircraft，is a key direction for future aviation equipment development. The key component of tiltrotor-pylon conversion actuator is focused.
LI Hailin, SI Jun, DANG Kexin, ZHANG Wei, LIU Longfei, WANG Xudong   +5 more
doaj   +1 more source

Interactional Aerodynamics Analysis of a Multirotor Energy Kite

Wind Energy, Volume 28, Issue 1, January 2025.
ABSTRACT Airborne wind energy (AWE) technology aspires to provide increased options for wind energy harvesting at a lower cost than conventional turbines. As AWE technology is still in its infancy, there is relatively little published information concerning its aerodynamic details.
Judd Mehr, Eduardo J. Alvarez, Andrew Ning   +2 more
wiley   +1 more source

Electric VTOL design exploration and configurations comparison for urban air mobility

Aerospace Research Communications
The development of Urban Air Mobility (UAM) has led to the introduction of various electric vertical takeoff and landing (eVTOL) aircraft configurations, which plays a crucial role in determining performance.
Xue Chen, Xuanyu Yao, Yunkun Man, Yaolong Liu, Yao Zheng   +4 more
doaj   +1 more source

Residual based tilt tri‐rotor UAV actuator fault detection using TSK fuzzy model

IET Control Theory &Applications, Volume 19, Issue 1, January/December 2025.
This article proposes a residual‐based fault detection algorithm to address actuator failures in tilt tri‐rotor UAVs. Using the TSK fuzzy model and kernel principal component analysis (KPCA) for enhanced accuracy, the method is validated through simulations and real flight data, achieving high accuracy and real‐time performance with a response time of ...
Guang He, Yi Bao, Liang Xin, Zhiqiang Long   +3 more
wiley   +1 more source