Simulation of Unsteady Aerdynamic Load for Rigid Coaxial Rotor in Forward Flight with Vortex Particle Method [PDF]
, 2017 Co-axial rotor systems are frequently used for high-speed helicopters. Nevertheless, issues related to rotor-head drag,\ud aerodynamic performance and vibration should also be considered. Simulating the unsteady aerodynamic loads for a rigid\ud coaxial rotor, including the aerodynamic interactions between rotors and rotor blades, is an essential part ...
Tan, Jianfeng +2 more
openaire +3 more sources
Numerical Analysis of the Influence of Rotor Wake on Hub Drag for a Coaxial Rigid Rotor [PDF]
Proceedings of the Advances in Materials, Machinery, Electrical Engineering (AMMEE 2017), 2017 Long He +3 more
exaly +2 more sources
Unraveling the Folding Dynamics of DNA Origami Structures. [PDF]
SmallDNA origami folding behavior is analyzed to understand the thermodynamic factors governing nanostructure self‐assembly. Key design parameters influencing assembly yield, kinetics, and cooperativity are identified. Building on these insights, a focused thermal ramp is suggested to improve yield and reduce assembly time.
Mohammadi-Zerankeshi M +4 more
europepmc +2 more sources
A minimal thrust vectoring rotor with six degree of freedom: Design and analysis
IET Cyber-systems and Robotics, 2021 This article presents a minimal thrust vectoring rotor (mTVR) with 6‐DoF motion ability. The mTVR is equipped with only three tiltable thrust units that deploy the coaxial counter‐propellers design for generating pure thrusts.
Wei Qiu, Chao Xu
doaj +1 more source
Interactional aerodynamics and acoustics of a hingeless coaxial helicopter with an auxiliary propeller in forward flight [PDF]
, 2008 The aerodynamics and acoustics of a generic coaxial helicopter with a stiff main rotor system and a tail- mounted propulsor are investigated using Brown's Vorticity Transport Model.
Brown, R.E. +3 more
core +3 more sources
A comparison of coaxial and conventional rotor performance [PDF]
, 2009 The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Brown, Kim, Landgrebe, Newman
core +1 more source
Aluminium Feeds for Reflector for NadirSAR [PDF]
, 2018 With the long term aim of developing a NadirSAR quadrotor UAV system specialized for monitoring broad acre grain fields, a large aperture load bearing antenna to use as the main structural element was sort.
Gray, Derek, Le Kernec, Julien
core +1 more source
Vibration and Performance Analyses Using Individual Blade Pitch Controls for Lift-Offset Rotors
International Journal of Aerospace Engineering, 2019 This work attempts to reduce the hub vibratory loads of a lift-offset rotor using IBC (individual blade pitch control) in high-speed forward flight. As a lift-offset rotor for the present study, the rigid coaxial rotor of a XH-59A compound helicopter is ...
Jae-Sang Park +4 more
doaj +1 more source
Performance and Vibration Analyses of Lift-Offset Helicopters
International Journal of Aerospace Engineering, 2017 A validation study on the performance and vibration analyses of the XH-59A compound helicopter is conducted to establish techniques for the comprehensive analysis of lift-offset compound helicopters.
Jeong-In Go, Do-Hyung Kim, Jae-Sang Park
doaj +1 more source
Rotary-wing MAV Modeling & Control for indoor scenarios [PDF]
, 2010 This paper is about modeling and control of Miniature Aerial Vehicles ¿MAVs for indoor scenarios, specially using, micro coaxial and quadrotor systems.
Barrientos Cruz, Antonio +3 more
core +1 more source