ハイブリット型アークヒータの作動特性

Abstract

A high enthalpy wind tunnel, with Hybrid type 27kVA DC-arc heater, is constructed and its characteristics are studied. Measured quantities are the mass flow rate m, the stagnation pressure p_0, the discharge current I and the voltage V of the arc heated flow condition. The stagnation temperature T_0 Was not measured, however a method of estimating it from m and p_0 With the aid of the high temperature air tables, is proposed by assuming isentropic flow. K.Kindler's graph, for the electric resistance V/I versus the similarity parameter I^2/m are plotted from the present data for air, in addition another data of high power Huels or segmented type arc heaters is compared to the present data.