试验研究表明,由于湿软土壤与船体钢板间的粘附作用,船式拖拉机静止船体的起步阻力随船体停置时间的延长而增大,其值可达正常滑行阻力的五六倍以上。为了降低起步阻力,在试验室内对模型船体进行了气幕减阻试验。结果表明,利用气幕效应可使静置船体的起步阻力降低20～25％。 Experimental studies show that the initial resistance of a hull tractor to a stationary hull increases with the stoppage time of the hull because of the adhesion between the wet and soft soils and the steel plate of the hull, which can reach more than five or six times the normal sliding resistance. In order to reduce the starting resistance, the airframe drag reduction test was carried out on the model hull in the laboratory. The results show that the air curtain effect can reduce the starting resistance of the standing hull by 20% to 25%.