The starting point of the fine yarn on the jet loom has no inertia moment impact force, and the weight of the fine yarn at the starting point is extremely light, which can be ignored compared to the weight of the thick shuttle on the shuttle loom. Therefore, the absence of inertia moment is easy to talk about, and it cannot cause impact force when obstructed, which can easily cause the weft to stop. Therefore, it is required that the opening of the yarn tube be as clear as possible. If v and t respectively indicate the speed change and common time of the fine yarn head encountering obstruction up, down, left, and right, and m and F respectively indicate the mass of the yarn head and the impact force caused by the speed change of the yarn head, then the following relationship exists between them:

Due to the majority of yarn quality being zero, the impact force is mostly zero. The fine yarn ends are blocked before weaving into administrative unit vehicles. On shuttle looms, the mass of the shuttle is thousands of times that of the fine yarn head on air-jet looms. When it encounters resistance, it can cause significant impact force, and when it encounters one or two tube yarns with unclear openings, it can be rushed through. That's why most of the cotton fabrics on air-jet looms do not have the three jump disadvantages such as star jump, parallel jump, and flower jump, while cotton fabrics on shuttle looms have the three jump disadvantage. That is to say, air-jet looms convert all three jump disadvantages into weaving machine warp stop.