Сравнение на методи

	Теория на ивиците за мореходни качества	Теория на опорната линия на гребен винт
Област	Аерокосмическа техника	Аерокосмическа техника
Семейство	Process / pipeline	Process / pipeline
Година на възникване	1970	1929
Създател	Salvesen, Tuck, Faltinsen	Sydney Goldstein
Тип	Analysis method	Design theory
Основополагащ източник	Salvesen, N., Tuck, E. O., & Faltinsen, O. (1970). Ship motions and sea loads. Journal of the Society of Naval Architects and Marine Engineers, 78(4), 250–287.	Goldstein, S. (1929). On the vortex theory of screw propellers. Proceedings of the Royal Society of London. Series A, 123(792), 440–465.
Други названия	strip theory, 2D strip method, seakeeping prediction	lifting line theory, propeller design method, Goldstein method
Свързани	3	3
Резюме	Seakeeping strip theory is a method for predicting the dynamic motion of a ship in regular and irregular waves by decomposing the hull into two-dimensional transverse sections (strips) and computing the hydrodynamic forces on each strip. Developed by Salvesen, Tuck, and Faltinsen in 1970, the method efficiently estimates ship heave, pitch, and roll motions, accelerations, and loads without resorting to expensive three-dimensional computational fluid dynamics. Seakeeping analysis using strip theory is standard in ship design and operational planning.	Propeller lifting line theory is a mathematical framework for analyzing and designing ship propellers by modeling each blade as a lifting line with circulation distribution. Developed by Sydney Goldstein in 1929 and refined by Kerwin and others, the method accounts for blade loading, wake effects, and propeller interactions. Lifting line theory provides efficient predictions of propeller thrust, torque, and efficiency and remains standard in preliminary propeller design and optimization.