Results 51 to 60 of about 19,013 (214)
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
Modeling Stiffness and Damping in Rotational Degrees of Freedom Using Multibond Graphs [PDF]
, 2013 A contribution is proposed for the modeling of mechanical systems using multibond graphs. When modeling a physical system, it may be needed to catch the dynamic behavior contribution of the joints between bodies of the system and therefore to ...
BARRE, Pierre-Jean +3 more
core +3 more sources
International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.In our work, an algorithm is presented for tilt‐rotor UAV clusters in an unknown complex environment, which addresses the challenge of navigating and positioning in complex unknown environments without external navigation and positioning information.
Liben Yang +4 more
wiley +1 more source
Research on Independent Reference Model–Based Anti‐Interference Control for Quadrotor
Journal of Control Science and Engineering, Volume 2026, Issue 1, 2026.The quadrotor is vulnerable to internal model parameters uncertainty and external airflow. In order to guarantee that the quadrotor tracks the reference signal quickly and smoothly under the influence of external airflow interferences and internal parameter uncertainties, an independent reference model–based anti‐interference control algorithm was ...
Jun Li +4 more
wiley +1 more source
NITROS An Innovative Training Program to Enhance Rotorcraft Safety [PDF]
, 2018 No abstract ...
Barakos, George +4 more
core +1 more source
Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.Abstract During the T119 bistatic radar (BSR) experiment, the Cassini spacecraft observed a collection of lakes in Titan's Northern Lake District. Specular reflections from liquid surfaces were clearly detected at X‐band ground‐based station DSS‐43 (Canberra), spaced out by sudden drops of power in correspondence to solid terrains.
Giancorrado Brighi +5 more
wiley +1 more source
A Double-Acting Piezoelectric Actuator for Helicopter Active Rotor
Actuators, 2021 An active rotor with trailing-edge flaps is an effective approach to alleviate vibrations and noise in helicopters. In this study, a compact piezoelectric actuator is proposed to drive trailing-edge flaps.
Jinlong Zhou, Linghua Dong, Weidong Yang
doaj +1 more source
Dynamic Stall Characteristics of Thick Wind Turbine Airfoils
Wind Energy, Volume 28, Issue 11, November 2025.ABSTRACT This paper studies the dynamic stall characteristics of thick flatback and nonflatback wind turbine airfoils. Two airfoils with a maximum thickness of 35%$$ 35\% $$ were studied, with trailing edge thicknesses of 2%$$ 2\% $$ and 10%$$ 10\% $$, respectively.
Mehdi Doosttalab +4 more
wiley +1 more source
Journal of Field Robotics, Volume 42, Issue 5, Page 2076-2094, August 2025.ABSTRACT This article presents the first ever fully autonomous UAV (Unmanned Aerial Vehicle) mission to perform gas measurements after a real blast in an underground mine. The demonstration mission was deployed around 40 min after the blast took place, and as such realistic gas levels were measured.
Samuel Nordström +6 more
wiley +1 more source
A New Actuator Surface Model with Improved Wake Model for CFD Simulations of Rotorcraft [PDF]
, 2017 Simulations of rotorcraft operating in unsteady flow-fields, manoeuvring flight, or with complex rotor configurations pose a significant challenge to current simulation methods.
Barakos, Geogre +3 more
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