Results of testing the AEDC 5-MW segmented arc heater

The results of testing a nominal 5-MW segmented (constrictor channel type) arc heater are presented. The heater was operated at chamber pressures up to 104 atm with power inputs to nearly 3 MW using air as the test gas. Bulk enthalpies ranged from about 7000 Btu/lb at 26 atm to 4500 Btu/lb at 102 atm. The nozzle exit flow was surveyed with null-point calorimeters and pressure and enthalpy probes. Performance comparisons are made between the segmented and Linde-type arc heaters. Detailed test and data summaries are presented. All testing was performed at the Arnold Engineering Development Center.