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Velocity measurements

Our main pages on this subject:

1.	News Releases - Onera
	Velocity measurements using high-repetition-rate stereoscopic PIV make it possible to observe the large scale dynamics of jet turbulence in a wind tunne, opening the way to progress in the understanding of jet noise generation....

2.	Metrology - Understanding the Turbulence that Causes Jet Noise - Onera
	Velocity measurements using high-repetition-rate stereoscopic PIV make it possible to observe the large scale dynamics of jet turbulence in a wind tunne, opening the way to progress in the understanding of jet noise generation....

3.	Doopler Global Velocimetry - ONERA's Science Pictures
	The laser system for DGV in the wind tunnel : several beams are produced, to calibrate the transmission curve for the iodine cell and also to generate three laser light sheets for a three component velocity measurement....

4.	GRAVES Space Surveillance System - ONERA's Science Pictures
	Based on this brand-new concept, the GRAVES radar network provides angular and radial velocity measurements....

5.	Optical diagnostics in hypersonic flows and in the upper atmosphere - ONERA / DMPH-EN
	Temperatures and velocity measurements using Coherent Anti-Stokes Raman Scattering (CARS) and Optical Parametric Oscillator (OPO)...

6.	Diagnostics by Electron Beam Fluorescence (EBF) in Hypersonics - ONERA / DMPH-EN
	Velocity measurements can also be performed through Doppler shift of the radiative emission or by a time of flight method....

7.	Supersonic Aircraft (ASUP1)
	The airfoil shapes designed for the future supersonic aircraft project are tested under these flight conditions by numerical simulation on powerful computers.The computations are validated in the wind tunnel on models where the vortex structures are analysed by detailed velocity measurements using laser technology..

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