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Study on Stabilization of Supersonic Combustion Using Ram Accelerator

Research Project

Project/Area Number 12450394
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Aerospace engineering
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

TAKI Shiro  Hiroshima University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (20020240)

Co-Investigator(Kenkyū-buntansha) ISHIZUKA Satoru  Hiroshima University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (70129162)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥14,800,000 (Direct Cost: ¥14,800,000)
Fiscal Year 2002: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2001: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2000: ¥11,100,000 (Direct Cost: ¥11,100,000)
KeywordsRam Accelerator / Supersonic Combustion / Shock Waves / Detonation / 超音速年少
Research Abstract

The main objects of the present research are to find the properties on the stability of the flame holding in supersonic flows of the combustible gas mixtures, as well as to show that the ram accelerator works as a powerful device to study the supersonic combustion. The ram accelerator we have developed in Hiroshima University is designed as a tool to make fundamental studies on the interactions of combustion with the shock waves, the boundary layer, and so on, so that tube has a rectangular cross section where parallel glass windows are mounted for optical observations. Then, we have got pictures of the flames in the supersonic flows, and the burning flow fields are made clear for various conditions. Flame holding properties are investigated for the different wedge angles and shapes of the side bodies of the projectile, or for the effects of boundary layer thickness. It is also shown that the back-step of the projectile is the most important part as a flame holder. A shock wave is always formed in front of the leading flame, which means the flame exists only in the subsonic region. The flow fields are so complicated that the numerical simulations are necessary to study the supersonic combustion. The computer program is also developed including full kinetic reactions of the CH_4-O_2-CO_2 mixtures, comparable to the experimental observations. Because of the practical necessary, CH_4-O_2-N_2 mixture system is to be used in experiments and the numerical simulations. The ram accelerator is working with the sub-detonative speed of the projectile, though super-detonative mode is also important. The properties of the detonations are also recently studied as a new propulsive device as a pulse detonation engine.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Yatsufusa, T.: "Visualization of Burning Flow around a Ram Accelerator Projectile by Coaxial Simultaneous Shadow/Direct Photography"Shock Waves. Vol.12. 235-240 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 滝 史郎: "ラム加速器における飛翔体周りの高速燃焼流"日本航空宇宙学会誌. 第50巻 第581号. 119-123 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 滝 史郎: "パルスデトネーションエンジン作動の数値シミュレーション"日本火薬学会誌. 第63巻. 14-18 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 八房 智顕: "ラム加速器の熱閉塞モードにおける不始動の形態"日本航空宇宙学会論文集. 第49巻 第573号. 354-359 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 八房 智顕: "ラム加速器の熱閉塞モード燃焼流れ場に及ぼす飛翔体速度の影響"日本機械学会論文集B編. 第67巻 第656号. 1065-1072 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 森本 洋平: "イメージインテンシファィアを用いた渦輪中の伝播火炎の観察"日本機械学会論文集B編. 第67巻 第653号. 219-225 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Zhang, C: "Numerical Study of Shock Induced Ignition and Combustion of CH4-O2-CO2 Mixtures in a Two-Dimensional Ram Accelerator"J.Phys. IV France. Vol.10. 155-164 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yatsufusa, T.: "Visualization of Burning Flow around a Ram Accelerator Projectile by Coaxial Simultaneous Shadow/Direct Photography"Shock 'Waves. Vol.12. 235-240 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Taki, S.: "Burning High-Speed Flow Fields around the Projectile in Ram Accelerator (in Japanese)"Aeronautical and Space Sciences Japan. Vol.50. 119-123 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Taki, S.: "Numerical Simulation of the Works of Pulse Detonation Engine (in Japanese)"Kayaku Gakkaishi. Vol.63,No.1. 14-18 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yatsufusa, T.: "Unstart Problem of Ram Accelerator in Thermal Choking Mode (in Japanese)"Journal of the Japan Society for Aeronautical and Space Science. Vol.49,No.573. 354-359 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yatsufusa, T.: "Effects of the Projectile Velocity to the Burning Flow Field of the Ram Accelerator Operating in Thermal Choking Mode (in Japanese)"Transactions of the Japan Society of Mechanical Engineers, Ser. B.. Vol.67,No.656. 1065-1072 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Morimoto, Y.: "Observations of the Propagating Flames in Vortex Rings Using an Image Intensifire (in Japanese)"Transactions of the Japan Society of Mechanical Engineers. Vol.67,No.653. 219-225 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Zhang, C.: "Numerical Study of Shock Induced Ignition and Combustion of CH4-O2-C02 Mixtures in a Two-Dimensional Ram Accelerator"J. Phys. IV France. Vol.10. 155-164 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yatsufusa, T: "Visualization of Burning Flow around a Ram Accelerator Projectile by Coaxial Simultaneous Shadow/Direct Photography"Shock Waves. Vol.12. 235-240 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 滝 史郎: "パルスデトネーション作動の数値シミュレーション"日本火薬学会誌. 第63巻. 14-18 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 滝 史郎: "ラム加速器における飛翔体周りの高速燃焼流"日本航空宇宙学会誌. 第50巻 第581号. 119-123 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 八房 智顕: "ラム加速器の熱閉塞モードにおける不始動の形態"日本航空宇宙学会論文集. 49-573. 354-359 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 八房 智顕: "ラム加速器の熱閉塞モード燃焼流れ場に及ぼす飛翔体速度の影響"日本機械学会論文集B編. 67-656. 1065-1072 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 森本 洋平: "イメージインテンシファイアうぃ用いた渦輪中の伝播火炎の観察"日本機械学会論文集B編. 67-653. 219-225 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 八房: "ラム加速器の熱閉塞モード燃焼流れ場に及ぼす飛翔体速度の影響"日本機械学会論文集(B編). Vol.67(掲載決定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 森本: "イメージインテンシファイアを用いた伝播火炎の観察"日本機械学会論文集(B編). 67-653. 219-225 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 滝: "ラム加速器の飛翔体周りの燃焼流れ場の可視化"可視化情報学会誌. 20-79. 309-314 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Zhang,C.: "Numerical study of shock induced ignition and combustion of CH4-O2-CO2 mixtures in a two-dimensional ram accelerator"Journal de Physique IV. Vol.10. 155-164 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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