Preliminary Hydrodynamic Model Tests of Several LVA Planing Hull Concepts

Abstract

Exploratory hydrodynamic model tests were conducted to investigate the resistance and seakeeping character of two possible LVA planing hull forms. Additional studies were made to evaluate the effects on hydrodynamic performance of adjustable transom flaps and fixed chine flaps. For a 55,000 lb. gross weight, the planing inception speed was between 10 and 25 knots. The impact accelerations and motions in a head sea state 2 are comparable with those observed for well-designed planing hulls and appear to be within the requirements for maintaining proficiency as defined by MIL-STD 1472-A. The added resistance in a head sea is larger than for conventional planing hulls. Bow form improvements are recommended to reduce the resistance and accelerations in a seaway. Computed and measured values of EHP and trim for zero flap deflection are in good agreement.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1975
Accession Number
ADA016798

Entities

People

  • Daniel Savitsky
  • Edward Numata
  • Michael Chiocco

Organizations

  • Stevens Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Agreements
  • Center Of Gravity
  • Contracts
  • Frequency
  • Horsepower
  • Hulls (Marine)
  • Impact Acceleration
  • Impact Loads
  • Military Research
  • Model Tests
  • Seakeeping
  • Security
  • Ship Design
  • Spectra
  • Standards
  • Test Facilities
  • Trim Angle

Readers

  • Marine Hydrodynamics