Design criterion of the dual-bell nozzle contour

Hirotaka Otsu, Masafumi Miyazawa, Yasunori Nagata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

In this study, we performed a CFD analysis to determine the optimum dual-bell nozzle contour. Especially, we investigated the effect of the deflection angle at the wall inflection on the separation point transition. Based on our present analysis, we found that the deflection angle at the wall inflection should be larger than the angle determined by a simple Prandtl-Meyer expansion. Also, the time to accomplish the separation point transition from the wall inflection to the extension nozzle exit is estimated to be less than 10 ms when our design criterion of the dual-bell nozzle contour is applied to the booster engine of H-2A launch vehicle. This time interval is considered to be essentially instant from the practical point of view of the safe nozzle operation.

Original languageEnglish
Title of host publicationInternational Astronautical Federation - 56th International Astronautical Congress 2005
Pages4491-4496
Number of pages6
Volume7
Publication statusPublished - 2005
Externally publishedYes
EventInternational Astronautical Federation - 56th International Astronautical Congress 2005 - Fukuoka, Japan
Duration: Oct 17 2005Oct 21 2005

Other

OtherInternational Astronautical Federation - 56th International Astronautical Congress 2005
CountryJapan
CityFukuoka
Period10/17/0510/21/05

Fingerprint

bells
nozzles
Nozzles
deflection
transition points
Prandtl-Meyer expansion
boosters
launch vehicles
Launch vehicles
engine
charge flow devices
engines
Computational fluid dynamics
Engines
intervals
analysis

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Otsu, H., Miyazawa, M., & Nagata, Y. (2005). Design criterion of the dual-bell nozzle contour. In International Astronautical Federation - 56th International Astronautical Congress 2005 (Vol. 7, pp. 4491-4496)

Design criterion of the dual-bell nozzle contour. / Otsu, Hirotaka; Miyazawa, Masafumi; Nagata, Yasunori.

International Astronautical Federation - 56th International Astronautical Congress 2005. Vol. 7 2005. p. 4491-4496.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Otsu, H, Miyazawa, M & Nagata, Y 2005, Design criterion of the dual-bell nozzle contour. in International Astronautical Federation - 56th International Astronautical Congress 2005. vol. 7, pp. 4491-4496, International Astronautical Federation - 56th International Astronautical Congress 2005, Fukuoka, Japan, 10/17/05.
Otsu H, Miyazawa M, Nagata Y. Design criterion of the dual-bell nozzle contour. In International Astronautical Federation - 56th International Astronautical Congress 2005. Vol. 7. 2005. p. 4491-4496
Otsu, Hirotaka ; Miyazawa, Masafumi ; Nagata, Yasunori. / Design criterion of the dual-bell nozzle contour. International Astronautical Federation - 56th International Astronautical Congress 2005. Vol. 7 2005. pp. 4491-4496
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