双断级滑行艇静水阻力性能影响因素

摘要

A systematic analysis of the factors affecting the resistance of a double-stepped planning craft at high speed is carried out based on the data for small serial model tests. The factors include displacement (△) ,longitude position of the center of gravity (XCGP) ,step angle (α) and overall length of the steps (L0). It is concluded that in calm water,the factors will have an obvious influence on resistance performance when Fn(△) >4. 0; the value of Rt/△ will be reduced to improve the efficiency by moving the center of gravity backward or increasing △>α and L0; when Fn(△) =3. 0~4. 0 and Rt/△ is around the valley point,those factors will have less influence on resistance performance.%基于双断级滑行艇小系列阻力模型试验数据,分析了高速时排水量、重心纵向位置、断级角度以及断级总长度对艇阻力性能的影响规律.结果表明:在静水中,当Fn▽＞4.0时,各因素对阻力性能影响较为明显,后移重心或增加排水量、断级角度和断级总长,可降低单位排水量阻力Rt/△,提高效费比；当Fn▽ =3.0～4.0时,断级艇处于阻力谷点附近,此时各因素对阻力性能影响很小.