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- W3042092017 abstract "N experimental survey of the flowfield induced by secondary gas injection into a supersonic conical nozzle is presented. The aim is to clarify the structure of the flowfield and to supply the necessary information for making a model of it. Two different types of pressure probes, Pitot tube and cone-surface pressure tube (cone probe), were used to deduce flow properties over a cross section. Wall pressure distribution was also measured. The results of the measurement indicate that the flowfield downstream of the injection port was composed of some elementary parts which were discerned due to their physical features. The effect of injection pressure on the structure of the flowfield was investigated at one axial location in the symmetrical plane of the flow. The test nozzle was conical with 9.6° half-angle and had a 26.0-mm-diam. throat. The secondary injector was a singleport-type converging nozzle and was drilled normal to the main nozzle wall. The injector port diameter, di9 was 4.0 mm. Both the main stream and the secondary jet were supplied by the same high-pressure air reservoir. Mach number and Reynolds number of the main stream at the injection location without injection were 2.1 and 8.7xl0 6, respectively. The cone probe had a 10° half-angle conical nose tip. It was considerably sensitive to probe angulation, especially at a high Mach number. Therefore we measured the flow direction at first and then set the cone probe axis in this direction and measured the cone surface pressure, pc. The Mach number, M, and the ratio of pc to Pitot pressure, pp, were correlated as M = 0.1612 (p c /p p )-°- 6541 f or 0.1<G0 C //?„)< 0.4" @default.
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- W3042092017 date "1976-06-01" @default.
- W3042092017 modified "2023-10-04" @default.
- W3042092017 title "Secondary gas injection into a supersonic conical nozzle" @default.
- W3042092017 hasPublicationYear "1976" @default.
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