Results 91 to 100 of about 3,999 (214)

Influence of configuration effects on multiple burst simulation testing [PDF]

open access: yes
During the initial phase of a lightning strike attachment on an aircraft, fast current pulses (rise time approximately 100 ns, I(sub max) approximately few kA) were measured, which can create equipment upsets or disturbances.
Cantaloube, M., Emanuely, J. L.
core   +1 more source

Vorticity-transport and unstructured RANS investigation of rotor-fuselage interactions [PDF]

open access: yes, 2009
The prediction capabilities of unstructured primitive-variable and vorticity-transport-based Navier-Stokes solvers have been compared for rotorcraft-fuselage interaction.
Brown, Richard   +3 more
core  

Modeling and Simulation of Coaxial Helicopter Rotor Aerodynamics

open access: yes, 2009
A framework is developed for the computational fluid dynamics (CFD) analyses of a series of helicopter rotor flowfields in hover and in forward flight. The methodology is based on the unsteady solutions of the three-dimensional, compressible Navier-Stokes equations recast in a rotating frame of reference.
openaire   +2 more sources

Coaxial UAV helicopter control laboratory design

open access: yes2012 20th Mediterranean Conference on Control & Automation (MED), 2012
This paper describes the design of a low cost laboratory platform to perform control related exercises with an UAV (Unmanned Aerial Vehicle). All the elements this platform is made up of are very common laboratory instruments or of the shelf toys.
openaire   +2 more sources

Lightning induced currents in aircraft wiring using low level injection techniques [PDF]

open access: yes
Various techniques were studied to predict the transient current induced into aircraft wiring bundles as a result of an aircraft lightning strike. A series of aircraft measurements were carried out together with a theoretical analysis using computer ...
Jordan, D. T., Stevens, E. G.
core   +1 more source

Co-design Optimization of a Novel Multi-identity Drone Helicopter (MICOPTER). [PDF]

open access: yesJ Intell Robot Syst, 2022
Abedini A, Bataleblu AA, Roshanian J.
europepmc   +1 more source

Incursion at Howz-e Madad: An Afghanistan Vignette [PDF]

open access: yes, 2012
On 20 June 2007, Canadian and Afghan National Army forces supported by Dutch and American air forces conducted one of a series of incursions into the Zharey District west of Kandahar City.
Maloney, Sean M.
core   +1 more source

A theoretical analysis of the electromagnetic environment of the AS330 super Puma helicopter external and internal coupling [PDF]

open access: yes
Numerical techniques such as Finite Difference Time Domain (FDTD) computer programs, which were first developed to analyze the external electromagnetic environment of an aircraft during a wave illumination, a lightning event, or any kind of current ...
Flourens, F.   +3 more
core   +1 more source

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