Page 128 - Practical Design Ships and Floating Structures

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(4) It is efficient for WIG to reduce impact load by installing plate-ski near CG, there is no harm to the
performance of takeoff including resistance and longitudinal stability.
(5) It can be seen from the result of theoretical analysis that impact load reducing is limited because
plate-ski's breath is rather large and the distance between ski and hull bottom is too close, so it's
necessary to develop a new kind of ski with better performance of impact such as strut-type-ski.

Reference
[ 1 J H. Wagner. ( 1932). Z.Ang.Mach. 12,
[2] H.Wagner. (1934). Proceedings of the lvth Inter. Congr. For Applied Mech. Cambridge(Eng1and)
[3 ]R.J.Monahan M.A. and P.R.Crewe . M.A. (1 949). Formulae for Estimating the Forces in Seaplane
-Water Impacts without Rotation or Chine Immersion, NACA, RN 2804, January,
[4]Robert W.Miller, Theoretical Analysis of Hydrodynamic Impact of a Prismatic Float Having
Freedom in Trim, NACA, TN 2698
[5]Joseph L.Sim and Emanuel Schnitzer. (1952).A Theoretical Investigation of the Effect of Partial
Wing Lift on Hydrodynamic Landing Characteristics of V-Bottom Seaplane in Step Impacts, NACA
TN 2815
[6]Pabst , Willelm. (193 1). Landing Impact of Seaplanes, NACA, TM 624
[7]Steiner, Margaret F. (1 948). Analysis of Planing Data for Use in Predicting Hydrodynamic Impact
Loads, NACA, TN 1694
[SIEmanuel Schnitzer. (1952). Theory and Proceduer for Determing Loads and Motions in Chine-
Immersed Hydrodynamic Impacts of Prismatic Bodies,NACA, TN 2813,
[9]Lamb, Horace. (1932). Hydrodynamics, sixth ed. Cambridge Univ.
[ 101Robert F.Smiley. (1952). The Application of Planing Characteristics to the Caculation of the Water
-Landing Loads and Motions of Seaplanes of Arbitrary Constant Cross Section, NACA, TN 2814