ラム加速器の熱閉塞モードにおける不始動の形態

概要

論文の詳細を見る
Failures of acceleration in thermally chocked ram accelerator are investigated using visualization by shadowgraph pictures. It is made clear in the present paper that not only the support from thermal choking pressure but also the flame holding in the boundary layer on the projectile surface has very important role for holding the combustion on the projectile afterbody. In the lower projectile velocity case, combustion behind the projectile is not so strong and falls off despite the good surface flame holding. Besides lower velocity also makes thermal choking easily at the projectile shoulder and wave unstart occurs. When the projectile velocity goes up to the 90% of CJ detonation velocity of the mixture, wave unstart occurs because combustion becomes too strong and thermal choking occurs at the projectile shoulder. If the heat release of the mixture is made lower to avoid this wave unstart, combustion region tends to falls off.
2001-10-05