Model experiments were conducted to investigate the seakeeping characteristics of a heavily loaded (55,000 lb.) Landing Vehicle Assault (LVA) planing hull. The vehicle under consideration has a flat-bottomed, zero deadrise angle planing surface with an adjustable full span transom stern flap and optional chine flaps. Experiments on the free-running 1/12 scale model, both with and without chine flaps were conducted at various speeds in simulated oblique irregular sea and coastal swell conditions. The intent of the investigation was to determine the craft habitability and safety of personnel as well as craft controllability. This information is presented herein in terms of wave induced craft vertical accelerations in standard one-third octave frequency bands. Additional plots are given for pitch, heave and roll accelerations. Vehicle responses to a 10 second period (full scale) swell are given in tabular form as acceleration transfer functions. Vertical acceleration levels at the bow and LCG were compared with MIL standards for maintaining personnel proficiency for one-hour. The results generally indicate the LVA accelerations to be within or at least marginally within acceptable levels. Some exceptions, particularly at the craft's bow, were noted in head and bow waves. (Author)


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Landing Vehicle Assault (LVA) Motion Characteristics in Oblique Seas and Coastal Swells


    Contributors:
    R. Stahl (author)

    Publication date :

    1978


    Size :

    53 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Landing Vehicle Assault (LVA)

    O'Neill, Edwin B. | SAE Technical Papers | 1977


    Landing Vehicle Assault (LVA)

    O Neill,E.B. / David W.Taylor Nav.Ship Res.and Dev.Cent.,US | Automotive engineering | 1977


    Assault landing ship

    Fearless, H.M.S. | Engineering Index Backfile | 1966


    Seakeeping Characteristics of the Amphibious Assault Landing Craft

    Alien H. Magnuson / Richard F. Messalle | AIAA | 1977