Modifications to the DLR High Enthalpy Shock Tunnel HEGfor Measurements on Supersonic Combustion
2001
World-wide interest in attaining cheaper
access to space by developing technologies
such as supersonic combustion (SCRAMJET)
engines, coupled with the degree of activity in
ground-testing of the pertinent physical
phenomena, have led to a decision to modify
the existing DLR High Enthalpy Shock Tunnel
(HEG) to provide full simulation conditions for
flight at Mach 8 at an altitude of 27 kilometers.
A design study has shown that a new shorter
contoured nozzle will be needed, leading also
to modifications in the existing test section and
optical diagnostics placement. The new tunnel
run parameters (piston trajectory) and the new
low enthalpy (-3 MJ kg'1) conditions will also
need to be calibrated.
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