1997 Fiscal Year Final Research Report Summary
Investigation of Radiation-cooled Arc Heater
| Project/Area Number |
07555607
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Aerospace engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
NISHIDA Michio Dept.of Aeronautics & Astronautics, Kyushu Univ.Professor, 工学部, 教授 (10025968)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Masashi Research Institute, Ishikawajima-Harima Heavy Industries Co.Ltd.Research Enginee, 技術研究所, 研究員
KIHARA Hisashi Dept.of Aeronautics & Astronautics, Kyushu Univ.Assistant, 工学部, 助手 (60243911)
ASO Shigeru Dept.of Aeronautics & Astronautics, Kyushu Univ.Associate Prof., 工学部, 助教授 (40150495)
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| Project Period (FY) |
1995 – 1997
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| Keywords | Arc Heater / High Temperature Gas Dynamics / Arc-heated Wind Tunnel / Ionized Gas |
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| Research Abstract |
During atmospheric entry, a maximun flight Mach number is over 25 and a very strong shock wave is generated ahead of a nose and wings. Air temperature behind such a strong shock wave becomes over 10,000K and as a result nitrogen and oxygen molecules dissociated and ionized. In addition Nitric oxide is also produced due to the combination of dissociated molecules. An arc-heated wind tunnel can be considered as one of ground test facilities to similate the atmospheric entry conditions, that is to say, a high speed flow of dissociated and ionized air. A conventional arc heater is water-cooled but this water cooling system is considerable complex and sometimes an accident of water occurs. Therfore, in the present study, a radiation-cooled arc heated is proposed instead of a water-cooled arc heater. It is the present aim to develop such a radiation-cooled arc heater and to apply it to studies of high-enthalpy flows needed for the reeentry aerodynamic heating experiments
The following items have been done in 1997 :
(1) perforamnce test of a arc-heated wind tunnel
・arc current-arc voltage characteristics
・test gas flow rate-arc current characteristics
・arc current-stagnation enthalpy characteristics
(2) thermal characterics test
・stagnation heat flux measurements
・estimation of stagnation enthalpy
・estimation of heating efficiency
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