|Table of Contents|

Analysis of the aspiration drag in dual-bell nozzles during separation operating mode (PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2024年02期
Page:
88-97
Research Field:
目次
Publishing date:

Info

Title:
Analysis of the aspiration drag in dual-bell nozzles during separation operating mode
Author(s):
LIU Yazhou CAO Chen HU Haifeng YANG Jianwen
Science and Technology on Liquid Rocket Engine Laboratory,Xi'an Aerospace Propulsion Institute, Xi'an 710100, China
Keywords:
dual-bell nozzles aspiration drag flow separation mach reflection regular reflection
PACS:
V434
DOI:
10.3969/j.issn.1672-9374.2024.02.009
Abstract:
The performance of dual-bell nozzles is affected by the aspiration drag generated in the recirculation zone during low-altitude operation. Dual-bell nozzles with different design parameters were studied by simulation to gain the aspiration drag at various flight altitudes. Results show that the aspiration drag does not always decrease with the increasing flight altitude as existing research reported. The aspiration drag of dual-bell nozzles with negative wall pressure gradient extension decreases with increasing flight altitude, while the aspiration drag of dual-bell nozzles with zero and positive wall pressure gradient extensions firstly decreases and then increases with the increase of flight altitude, and the inflection altitude appears at 2 km. These phenomena are caused by opposite varying trends for the axial size of the recirculation zone and the difference between the ambient pressure and the wall pressure in the recirculation zone during the ascent of flight altitude 0-8 km. Moreover, the aspiration drag can be reduced by increasing the length and area ratio of the base section and decreasing these parameters of nozzle extensions, the reduction in drag coefficient is about 1%-2%.

References:

[1] FREY M, MAKOWKA K, AICHNER T. The TICTOP nozzle: a new nozzle contouring concept[J]. CEAS Space Journal, 2017, 9(2): 175-181.
[2]HOLLOWAY J, LIMERICK C. The challenge of reusable, single stage to orbit propulsion[C]//Aerospace Design Conference. Reston, Virginia: AIAA, 1993.
[3]刘昌国, 邱金莲, 陈明亮. 液体火箭发动机复合材料喷管延伸段研究进展[J]. 火箭推进, 2019, 45(4): 1-8.
LIU C G, QIU J L, CHEN M L. Research progress of composites nozzle extension for liquid rocket engine[J]. Journal of Rocket Propulsion, 2019, 45(4): 1-8.
[4]ÖSTLUND J, MUHAMMAD-KLINGMANN B. Supersonic flow separation with application to rocket engine nozzles[J]. Applied Mechanics Reviews, 2005, 58(3): 143.
[5]SHI J. Rocket engine nozzle side load transient analysis methodology: a practical approach[C]//46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston, Virginia: AIAA, 2005.
[6]STARK R H, GENIN C. Scaling effects on side load generation in subscale rocket nozzles[C]//52nd AIAA/SAE/ASEE Joint Propulsion Conference. Reston, Virginia: AIAA, 2016.
[7]WATANABE Y, SAKAZUME N, YONEZAWA K, et al. LE-7A engine nozzle flow separation phenomenon and the possibility of RSS suppression by the step inside the nozzle[C]//40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. Reston, Virginia: AIAA, 2004.
[8]HAGEMANN G, IMMICH H, VAN NGUYEN T, et al. Advanced rocket nozzles[J]. Journal of Propulsion and Power, 1998, 14(5): 620-634.
[9]杨建文, 付秀文, 刘亚洲, 等. 不同设计型面对双钟形喷管性能影响[J]. 火箭推进, 2021, 47(5): 14-21.
YANG J W, FU X W, LIU Y Z, et al. Influence on performance of dual-bell nozzle with different design contours[J]. Journal of Rocket Propulsion, 2021, 47(5): 14-21.
[10]MARTELLI E, NASUTI F, ONOFRI M. Numerical parametric analysis of dual-bell nozzle flows[J]. AIAA Journal, 2007, 45(3): 640-650.
[11]NASUTI F, ONOFRI M, MARTELLI E. Role of wall shape on the transition in axisymmetric dual-bell nozzles[J]. Journal of Propulsion and Power, 2005, 21(2): 243-250.
[12]KBAB H, SELLAM M, HAMITOUCHE T, et al. Design and performance evaluation of a dual bell nozzle[J]. Acta Astronautica, 2017, 130: 52-59.
[13]STARK R, GÉNIN C, SCHNEIDER D, et al. Ariane 5 performance optimization using dual-bell nozzle exten-sion[J]. Journal of Spacecraft and Rockets, 2016, 53(4): 743-750.
[14]FREY M, HAGEMANN G. Critical assessment of dual-bell nozzles[J]. Journal of Propulsion and Power, 1999, 15(1): 137-143.
[15]GENIN C, STARK R H, SCHNEIDER D. Transitional behavior of dual bell nozzles: contour optimization[C]//49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. Reston, Virginia: AIAA, 2013.
[16]VERMA S B, STARK R, NUERENBERGER-GENIN C, et al. Cold-gas experiments to study the flow separation characteristics of a dual-bell nozzle during its transition modes[J]. Shock Waves, 2010, 20(3): 191-203.
[17]HAGEMANN G, TERHARDT M, HAESELER D, et al. Experimental and analytical design verification of the dual-bell concept[J]. Journal of Propulsion and Power, 2002, 18(1): 116-122.
[18]刘亚洲, 李平, 陈宏玉, 等. 不同延伸段压力分布的双钟形喷管设计[J]. 航空动力学报, 2022, 37(2): 424-432.
LIU Y Z, LI P, CHEN H Y, et al. Design of dual-bell nozzles with different extension pressure distributions[J]. Journal of Aerospace Power, 2022, 37(2): 424-432.
[19]SCHNEIDER D, GÉNIN C. Numerical investigation of flow transition behavior in cold flow dual-bell rocket nozzles[J]. Journal of Propulsion and Power, 2016, 32(5): 1212-1219.
[20]SCHNEIDER D, STARK R, GÉNIN C, et al. Active control of dual-bell nozzle operation mode transition by film cooling and mixture ratio variation[J]. Journal of Propulsion and Power, 2019, 36(1): 47-58.
[21]GROSS A, WEILAND C. Numerical simulation of separated cold gas nozzle flows[J]. Journal of Propulsion and Power, 2004, 20(3): 509-519.

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