日本航空宇宙学会論文集
Online ISSN : 2432-3691
Print ISSN : 1344-6460
ISSN-L : 1344-6460
風洞内残留ラジカルとそのエンジン試験への影響
八並 知実三谷 徹小林 完升谷 五郎
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ジャーナル フリー

2000 年 48 巻 563 号 p. 411-417

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Scramjet engines are tested by using the RamJet engine Test Facility (RJTF) under Mach 4 to 8 conditions, where a storage heater (S mode) and a combustion air heater (vitiation: V mode) are used to raise the air temperature. The effects of air heating methods on scramjet engine performance were investigated using a chemical kinetic code, LSENSAt first, dependence of dissociation time of O2 was investigated to evaluate the amounts of radicals supplied to scramjet engines in test facilities. Residual radicals in the S mode, the V mode, shock tunnels, were evaluated for the various nozzles. Then, autoignition criteria with radicals and H2O addition were calculated for a scramjet flow. Then the possibility of autoignition in boundary layers was examined for M 6 and M 8 conditions. No differences in the S and V modes were found in chemical and flow fields in the engine tests in the RJTF.

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© The Japan Society for Aeronautical and Space Sciences
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