This letter analytically considers the motion of projectile in the traveling liquid charge accelerator to obtain mathematical criterion among parameters of both propellant and accelerator. And it is understood from this criterion that a liquid propellant is the key tool to realize hypervelocity of order more than 10 kms-1, provided that the explosion of traveling liquid charge is securely choked by a certain means. An example of a structure of this accelerator is also pictured from this criterion with a little exaggeration.
このレターは液体移動装薬加速器内の飛翔体の運動を解析的に熟慮して加速器のパラメーターと装薬の特性指数間の数式上の基準を求める。この基準は適正なる燃焼時間と出力を持つ液体発射薬が 10km/s の超高速を発現する基本的道具である事を示す。そして、この基準による加速器の概略図を少し誇張を加えて示す。