BLADE-VORTEX INTERACTIONFLIGHT TESTSROTARY WINGSHELICOPTERSROTOR AERODYNAMICSTRANSONIC FLOWVORTICESAirloads measured on a two-bladed helicopter rotor in flight during the Ames' Tip Aerodynamic and Acoustic Test are compared with calculations from a comprehensive helicopter analysis (CAMRAD/JA), and the ...
Verona, Italy 27. 03. 2018 - Agusta Bell AB-212 two blade helicopter of italian police landing on airport. High quality 4k footage Author credit line ID215688387 ©Ruggero Piccoli | Dreamstime.com Image keywords 4k Footage Quality 4k
The PIV/PTV two-phase flow measurement is employed to study the "brownout" two-phase flow induced by a near-ground hovering helicopter rotor. The deflection of the rotor tip vortex trajectory and the merging progress of vortex pairs are characterized through Γ2 vortex core identification and mo...
The rotary-wing aircraft with two rotors has one (78) in the form of a conventional fixed-blade propeller, the other (124) in the form of a helicopter rotor. The former is directly driven, the latter through reduction gearing (54) embodying a freewheeling device, and a friction clutch,...
An overview of the small unmanned helicopter equipped with both the developed and reference airspeed sensors is depicted in Fig.1. The helicopter, an Impaction E12S by Quest Corporation, served as the platform for the flight experiments. The main rotor rotates clockwise when viewed from above, wi...
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Large-Scale Simulations of a Non-generic Helicopter Engine Nozzle and a Ducted Axial Fan Large-eddy simulations (LESs) of a helicopter engine jet and an axial fan are performed by using locally refined Cartesian hierarchical meshes. For the computations a high-fidelity, massively parallelized solver...
KNOW-BLADE Task-2 report: Aerodynamic accessories Firstly, the potential of applying active flow control by means of a pulsating jet placed at the leading edge in order to enhance mean lift. The ... S Kang - Physics of Fluids - PHYS FLUIDS 被引量: 15发表: 2004年 The Effect of Varying...
A New Single-blade Based Hybrid CFD Method for Hovering and Forward-flight Rotor Computation A hybrid Euler/full potential/Lagrangian wake method, based on single-blade simulation, for predicting unsteady aerodynamic flow around helicopter rotors i... Y Shi,Q Zhao,F Fan,... - 《Chinese Journal...
Still in the context of the provisions put forward by the present invention, and by way of example, it should also be considered that the first calculation parameter is a physicochemical parameter characteristic of the ambient air outside the helicopter, in particular its density or its temperatur...