Onera - return on innovation
Ligne orange

FRANÇAIS


Search Results

 
TiAl

Our main pages on this subject:

1.No title
 AKA PSCR-Method (P.S Vassilevski, 1984) Resembles closely the par tial fraction variant of classical cyclic reduction by R.A Sweet, 1988 ;...
 
2.Regularization modeling of turbulence
 Iner tial range, e.g., Bardina ij [ L, ij ] (u) = u i u j - u i u j Mixed models ? mij = Bardina + Cd Smagorinsky Cd via dynamic Germano-Lilly procedure...
 
3.Similar and Dissimilar Joining : Brazing System Development - Onera's Technological Offer
 Brazed TiAl / N75 joint....
 
4.Development of new high temperature bulk materials : superalloys for turbine disks and blades - ONERA / DMSM-EN
 Optimisation of chemical compositions and characterisation of TiAl alloys with high strength at elevated temperature, processed by casting and hot forming.... Study of strain-hardening and cyclic damage of TiAl alloys processed by the powder metallurgy route.... Development of an anti-corrosion and anti-oxidation coating for TiAl alloys....
 
5.Turbomachines (TURB3)
 Elaboration of TiAl intermetallics in a plasma furnace... Elaboration of a TiAl ingot in a plasma furnace... TiAl lingot (diameter 95mm ; height 320mm)... In particular, TiAl (titanium - aluminium alloy) is stiffer and lighter than conventional titanium alloys.... An economical way for the production of casings and blades is foundry ; so, TiAl-based alloys which are the more suitable for this process are searched for....
 
6.Turbomachines (TURB3)
 Lighter and lighterElaboration of TiAl intermetallics in a plasma furnace. Elaboration of a TiAl ingot in a plasma furnace. Similar activities.
 
7.Porq.dvi
 In tial equation : that case, an applied magnetic field can strongly affect the fluid's motion but there is practically (x, t) + (u ·)(x, t) = (x, t) (1) no retroaction of the flow on the applied field. t This regime of magnetohydrodynamics is governed by the so-called quasi-static approximation (or inductionless approximation) 1(see below). where is the scalar quantity, u the velocity field The main effects of an applied magnetic field and the diffusion coefficient....
 
8.- Turbulence and Interactions IGESA
 Rotating turbulence · Wave-turbulence with a " singular " zero-frequency mode e a ik·x u (x, t) = N eik t + a-1 N e-ik t + 1) A new set of " slow " variables : a±1 (k, t)) Anisotropic dispersion frequency of iner tial waves : k k = 2· k · Rewriting governing equations in terms of a±1 : -) triadic resonance condition k ± p ± q = 0 · Rewriting any spectral closure (e.g. Lin) : e + 2 k 2e = T (e) (k, t) t...
 
9.No title
 Par tial list of references :... Par tial list of references :...
 


© ONERA 2007 - Terms of use