Results 51 to 60 of about 16,873 (217)
Tuning of ADRC for QTR in Transition Process Based on NBPO Hybrid Algorithm
IEEE Access, 2019 The quad tilt rotor (QTR) has complex dynamics characteristics, and the environmental factors have a great influence on it. This increases the difficulty of its control especially in transition mode.
Zhigang Wang +3 more
doaj +1 more source
Aerodynamic effect analysis of rotor downwash on wings of composite high-speed helicopter
Hangkong gongcheng jinzhan, 2023 The analysis of the aerodynamic interference of the downwash on wings under different intensities on both sides of the rotor of the composite high-speed helicopter, can provide a certain reference for the design and optimization of the aerodynamic shape ...
LIU Chaofan, ZHU Qinghua, LIU Jia
doaj +1 more source
Hybrid‐Electric Aeroengines: Strategic Technical Pathways and Environmental Implications
Advanced Energy and Sustainability Research, Volume 7, Issue 8, August 2026.Hybrid‐electric propulsion systems represent a transformative frontier in aerospace engineering, critical for achieving sustainable aviation. This review synthesizes recent breakthroughs in hybrid‐energy aero‐engine design, critically evaluating key technological pillars.
Yankun Wang, Mingkui Wang
wiley +1 more source
Attitude Active Disturbance Rejection Control of the Quadrotor and Its Parameter Tuning
International Journal of Aerospace Engineering, 2020 The internal uncertainty and external disturbance of the quadrotor will have a significant impact on flight control. Therefore, to improve the control system’s dynamic performance and robustness, the attitude active disturbance rejection controller (ADRC)
Suiyuan Shen, Jinfa Xu
doaj +1 more source
Dynamics of a Rod Attached to a Rotating Hinge
Macromolecular Symposia, Volume 415, Issue 4, August 2026.ABSTRACT The dynamics of a rod attached to a rotating hinge, also interpreted as a physical pendulum in a rotating frame, provide a valuable mechanical model for analyzing the complex oscillatory behavior of helicopter rotor blades. This simplified system captures essential features of blade flapping and in‐plane motions influenced by inertial and ...
Gheorghe Floroiu +2 more
wiley +1 more source
GARTEUR Helicopter Cooperative Research [PDF]
, 2010 This paper starts with an overview about the general structure of the Group for Aeronautical Research and Technology in EURope (GARTEUR). The focus is on the activities related to rotorcraft which are managed in the GARTEUR Helicopter Group of ...
Pahlke, Klausdieter
core
Modelling the aerodynamics of coaxial helicopters : from an isolated rotor to a complete aircraft [PDF]
, 2008 This paper provides an overview of recent research on the aerodynamics of coaxial rotors at the Rotorcraft Aeromechanics Laboratory of the Glasgow University Rotorcraft Laboratories.
Brown, Richard E., Kim, Hyo Won
core +3 more sources
Martian Proton Albedo as Signature of Near‐Surface Water
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract Understanding the Martian soil water budget is crucial not only for in situ resource utilization in future human missions to Mars, but also for reconstructing the geological and climatic history of the planet, as well as to assess the potential of ancient or even present microbial life.
Jan Leo Löwe +13 more
wiley +1 more source
International Journal for Numerical Methods in Engineering, Volume 127, Issue 7, 15 April 2026.ABSTRACT In time‐marching dynamical simulations, treatment of contact forces in deformable bodies represented by finite element meshes requires a compromise between simulation fidelity and computational costs. External forces directly evaluated at the mesh nodes offer better computational performance at the cost of modelling fidelity.
Alexander R. Schock +2 more
wiley +1 more source
Ecological Applications, Volume 36, Issue 3, April 2026.Abstract Globally, bird and aircraft collisions are a major safety hazard and monetary expense for the aviation industry. Empirical evidence suggests that the behavioral response of an animal within close proximity of an approaching vehicle is a critical factor in determining whether a collision occurs.
Ryan B. Lunn +2 more
wiley +1 more source