## A 50-megawatt arc heater: scaling parameters and performance predictionAF Flight Dynamics Laboratory, Research and Technology Division, Air Force systems Command, 1964 - Technology & Engineering - 53 pages The Air Force Flight Dynamics Laboratory 50-Megawatt Electrogasdynamics Test Facility is a continuous flow, electric arc heated, hypersonic, wind tunnel for re-entry heat transfer and aerodynamic testing in air. A brief description of arc wind tunnel work at the Laboratory is presented. Arc heater test data up to 5 megawatts of power are presented and problems associated with highpressure operation of these high-voltage heaters are discussed. The 50-Megawatt Arc Heater design is discussed along with the expected performance of the heater and facility. (Author). |

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4-MW Arc Heated 50-Megawatt Arc Heater 50-Megawatt Facility aerodynamic testing air enthalpy air flow rate Amps Figure anode Arc Air Heater arc chamber stagnation arc current Arc Heated Hypersonic arc heater Figures Arc Length arc voltage argon BTU/lb Bulk Stagnation Enthalpy cathode chamber pressure conical nozzle Constant Throat Sizes copper Current of 2100 Current Summary Curve Curve for Constant Curve for Current Diameter Summary Curve direct arc heater electrical insulation exit diameter Figure 35 Flight Dynamics Laboratory gal/min High-Voltage Arc Air high-voltage arc heater Hypersonic Wind Tunnel Inches lb/sec Linde Company MACH NUMBER mass flow megawatts N=2 heater N=7 ARC HEATER N=7 Stagnation Pressure N=7 Voltage nozzle constriction operation percent power supply Prototype Hypersonic Tunnel psia R. T. Smith ring sealed Scaled N=7 Data Schematic stagnation point stagnation temperature swirl chamber Swirl Probe test section thermal insulators Throat Diameter Summary velocity volts water flow rate water-cooled