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http://dx.doi.org/10.5139/JKSAS.2011.39.5.416

A Study on Operation Characteristics of Co-flow Fluidic Thrust Vector Control under Over-expanded Jet Condition  

Heo, Jun-Young (한국항공대학교 항공우주및기계공학과)
Jeon, Dong-Hyun (한국항공대학교 항공우주및기계공학과)
Lee, Yeol (한국항공대학교 항공우주및기계공학부)
Sung, Hong-Gye (한국항공대학교 항공우주및기계공학부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.5, 2011 , pp. 416-423 More about this Journal
Abstract
The purpose of this research is to investigate the operation characteristics of fluidic thrust vector control using injection of the control flow parallel to the main jet direction; Co-flow injection. The technique bases on the Coanda effect of flow. Both numerical and experimental studies were conducted to investigate operation parameters; flow structure, the jet deflection angle, and shock effects near the nozzle exit. While the total pressure of main jet is the range of 300 to 790 kPa, the total pressure of control flow varies from 120 to 200 kPa. The jet deflection angle and thrust coefficient have linear relation with the pressure ratio(PR) of main jet to control flow in 0.15 < PR < 0.4 but show their limit above PR = 0.4.
Keywords
Fluidic Thrust Vector Control; Operation Characteristics; Jet Deflection Angle; Coanda Effect;
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