如果火炮对称地固定在车体上方中间位置并且车体的长度近似于火炮长度的话,那么,为了提供火炮的高低和方向角度,在车体和火炮之间可能有各种不同的安装方式。已经采纳或建议了很多不同的火炮安装方法,归纳起来有三种发明将证明是最有用的,它们是:无炮塔式方案,顶置火炮式方案,火炮在座圈上方 If the artillery is symmetrically fixed in the middle of the body and the length of the body approximates the length of the artillery, then in order to provide artillery level and direction angles there may be a variety of different ways of mounting between the body and artillery. Many different artillery installations have been adopted or suggested and in summary there are three types of invention that will prove to be the most useful: turretless, overhead artillery, artillery over the seat