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http://dx.doi.org/10.5139/JKSAS.2017.45.10.844

Research Trends of an E-D Nozzle for Altitude Compensation  

Moon, Taeseok (Department of Aerospace Engineering, Graduate School of Chungnam National University)
Park, Sanghyeon (Department of Aerospace Engineering, Graduate School of Chungnam National University)
Choi, Junsub (Department of Aerospace Engineering, Graduate School of Chungnam National University)
Huh, Hwanil (Department of Aerospace Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.45, no.10, 2017 , pp. 844-854 More about this Journal
Abstract
The Expansion-Deflection(E-D) nozzle is a nozzle that has a performance gain through the altitude compensation effect by changing the effective area within the nozzle according to the altitude. An E-D nozzle has been known to reduce the length of the nozzle and achieve the payload gain of the launch vehicle. Due to the potential advantages of an E-D nozzle, related research has been carried out in the United Kingdom, Germany, Australia and Europe etc. In the UK, the flow characteristics of the E-D nozzle and the performance comparison with the dual-bell nozzle which is altitude compensation nozzle were studied. In order to understand the transition characteristics of the E-D nozzle in DLR, the transition characteristics according to the nozzle pressure ratio change were analyzed. In Europe, numerical study using the E-D nozzle concept on upper stage of the launch vehicle Ariane 5 ESC-B was carried out to confirm the possibility of payload gain according to the nozzle length reduction. In this paper, research trends of an E-D nozzle performed outside the country are classified and analyzed according to their characteristics and utilized as basic data of E-D nozzle research in the future.
Keywords
Expansion-Deflection Nozzle; Altitude Compensation; Geometric Design Parameters; Research Trends;
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Times Cited By KSCI : 2  (Citation Analysis)
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