A laboratory measurements program has been performed in the JF-10 high enthalpy shock tunnel, which provides the aerodynamic and aerothermal conditions wherein plasma environment issues can be quantitatively examined. Electron number density is measured by using a swept-voltage electrostatic probe placed on a 10 degree wedge model. Dual-cable method is explored in order to reduce the induced noise due to the RC characteristic of coaxial cables when a high frequency swept voltage is applied to the probe. Results show that electron density in the boundary layer of the model can be effectively acquired and the dual-cable method turns out to be an effective way for electron density measurement in the short duration test facilities.
; 赵伟
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