A QUICK AND SIMPLE PROCEDURE FOR CALCULATING THE BRAKING OF A SHIP, DURING LAUNCHING, BY CHAIN DRAGS OF VARIABLE WEIGHT

It is mentioned that one objective of the work described was to demonstrate the advantages of computers in shipbuilding studies in general. The Author discuss the braking of ships during launching from inclined ways into rivers or other confined waters; the Empresa Nacional Bazan yard at San Fernando, where the ship's run is restricted to 210 metres to avoid grounding, provides an example of such launching conditions. The development of the sub-routine RASUC, as part of a general computer-program for launching-calculations, is described; its purpose is to provide a quick and easy way of calculating the checking effect when variable-weight chain-drags (i.e., chain-drags arranged so that the total weight of the drags in action increases progressively) are used in combination with hydrodynamic braking devices. The paper is presented under the main headings: (1) Introduction; (2) Brief Explanation of the General Iterative Procedure for Calculating Launching Speeds; (3) Calculation Procedure for Braking with Variable-Weight Drags; (4) RASUC Sub-Routine; and (5) Example of an Application of RASUC. Order from BSRA as No. 49,265.

  • Supplemental Notes:
    • This paper was presented at the 15th Sesiones Tecnicas de Ingenieria Naval, held in Palma de Mallorca in June 1977.
  • Corporate Authors:

    Asociacion de Ingenieros Navales

    Apdo Correos 457
    Madrid,   Spain 
  • Authors:
    • Romero, J V
  • Publication Date: 1978-4

Language

  • Spanish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00188146
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Feb 27 1979 12:00AM