The computing method of differential throttling and the analytical process of thrust vector of inner nozzle and plug were introduced. The generated moments of pitch were given.
介绍了差分流量调节的计算方法和内喷管与塞锥推力矢量变化的分析过程，计算产生的俯仰力矩。
2
While for the equipment structure, they were the sectional area of nozzle, the pitch between screw and its turnbuckle, clearance, rotate speed, and the depth of the whorl on the turnbuckle.
For commercial applications, CIJ printers with one nozzle, or a linear array of identical nozzles with a fixed pitch, are used. In both cases, the deflection field is kept constant.