7.5 Visualisation by Optical Imaging
175
Fig. 7.14 Coloured shadowgraph performed in the S3MA wind tunnel of the ONERA ModaneAvrieux centre (© ONERA)
Fig. 7.15 Principle of a Schlieren setup
scale of the image. The vertical or horizontal orientation of the knife edge makes it
possible to resolve the direction of the density variation.
Figure 7.16 shows a short exposure time Schlieren picture of the flow produced
by an aerospike type nozzle placed in a supersonic flow at Mach 2 in the S8Ch wind
tunnel of the ONERA, Meudon.
175
Fig. 7.14 Coloured shadowgraph performed in the S3MA wind tunnel of the ONERA ModaneAvrieux centre (© ONERA)
Fig. 7.15 Principle of a Schlieren setup
scale of the image. The vertical or horizontal orientation of the knife edge makes it
possible to resolve the direction of the density variation.
Figure 7.16 shows a short exposure time Schlieren picture of the flow produced
by an aerospike type nozzle placed in a supersonic flow at Mach 2 in the S8Ch wind
tunnel of the ONERA, Meudon.