Experimental Study on Supersonic and Hypersonic Flows Around Models with On-Board Plasma Generators PDF Download

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In this report, the results of experiments on the contract SPC-97-4042 in the wind tunnel T-113 of TsAGI at Mach number M = 4 and static pressure equal 29 torr are presented. The tests were carried out with three types of axisymmetical models. Two of them were equipped by plasma generators and had the different form of the nose part. In front of the bluntness, these models had the needle. Besides, the nose parts of them were produced of two different isolator materials. The plasma generators were supplied by energy either from the alternating current source of electric power or from the capacity storage. The third type of the model was the body contour of which was close the optimal one for M = 4 and did not have any generator. The models equipped by plasma generators were produced by MTC, the model of the third type was made by TsAGI. In all runs, the balance measurements and schlieren photo registrations were carried out. In the experiments with the models equipped by plasma generators, the spectroscopic diagnostic of the discharges by MSU (to the end of determination of rotation and vibration temperatures) and ordinary photography were also fulfilled. Full results of the aerodynamic experiments and significant results of other investigations will be further presented. In these experiments, the effect of the drag decrease at the discharge presence did not exceed 14 % and the model of the optimal form had the drag coefficient less than the models with working plasma generators.