The shape of a propeller hub cap was selected as a divergent shape, and the divergent angle was determined by the DOE.
This is due to the strong expansion wave generated at the entrance of the isolator, and when the divergent angle of the isolator is sufficiently large, namely 1.5°, a zone of negative pressure is formed just ahead of the leading edge of the shock wave train.
It is found that combustion apparently is well organized with smaller divergent angle.
Two critical parameters of configuration, cavity location and the divergent angle, were changed during experiments.
The geometric parameters under investigation included the area ratio (AR) of chimney exit over entrance, the divergent angle (DA) of chimney wall and the size of system.
On increasing the divergent angle of the scramjet isolator, the static pressure along the central symmetrical line of the isolator decreases sharply.
The effects of the divergent angle and the back pressure on the shock wave transition and the location of the leading edge of the shock wave train have been estimated and discussed.
Other pin factors that add to fixator rigidity are increased pin spread (length of the fractured bone involved in fixation), increased pin numbers and levels and lastly, increased pin divergent angle in the axial plane [7, 11, 21, 22, 23, 24, 25].
Optimization of various constructional parameters including selection and location of source, prism and detector, position of source, angular position and height of source from prism plane, divergent angle of source, refractive index of prism, size of prism, the location of detector to pickup the optimum reflected light, refractive index of sample, critical angle, choice of suitable prism.
Hence, the gantry was rotated according to the beam divergent angle to make the matching field edges aligned.
