Numerical Investigation to Enhance the Thrust Vector of a Scramjet Nozzle

Meiss, Jan-Hendrik; Schröder, Wolfgang; Meinke, Matthias

doi:10.2514/6.2011-2346

Cited by 5 publications

(1 citation statement)

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“…Previous research on jet control for hypersonic vehicles was by way of using, secondary injection thrust vector control (SITVC) technique in single expansion ramp nozzle (SERN). [20][21][22] Both numerical and experimental investigations were carried out in these papers. However in 1990's Cavelleri and his coworkers proposed use of a solid probe instead of secondary injection for thrust vector control for rocket 3nozzles and the results of their findings can be found in Ref.…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation on the use of a rectangular strut in a scramjet thruster for thrust vector control

Rose

Sridhar

2020

Proceedings of the Institution of Mechanical Engineers, Part G:

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An experimental investigation was carried out to find the effect of a strut spanning across the width of a single expansion ramp of a laboratory model scramjet thruster as a thrust vector control device. Cold flow tests were conducted with operating total pressures ranging from 4 bar to 10 bar and the thruster exhaust was to ambient atmosphere. The mass flow rate varied from 0.105 kg/s to 0.263 kg/s. Experiments were conducted by varying the strut height at different operational total pressures to find if any thrust vector control could be achieved to supplement the maneuverability of hypersonic vehicle with aerodynamic control. The laboratory model consisted of an isolator, a divergent combustor followed by a single expansion ramp. Except the side walls, the thruster was fabricated with stainless steel. A high quality acrylic sheet was used for internal flow visualization by a schilieren system. The wall pressure was recorded at different locations from the combustor inlet to ramp trailing edge. Shock pattern was studied from the schilieren images and it was observed that an increase in strut height caused a downward deflection of the exhaust. From the wall pressure distribution, two dimensional side force coefficient and pitching moment coefficient were calculated and the effect of strut height variation on the above coefficients was plotted. Results from experiments indicated that the presence of the strut yielded noticeable changes in side force and pitching moment. The increase in strut height provided exhaust stream directional changes which may be useful in maneuvering the vehicles employing scramjet propulsion system.

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Section: Introductionmentioning

confidence: 99%