Numéro : 1974 - Year : 1984
Hydrodynamic behaviour of PLAZ, an autonomous shuttle developed for the feasibility studies of polymetallic nodules mining in 6000 m water depth
P. BARDEY, Société Principia recherche développement
P. GUEVEL, Société Principia recherche développement
P. MARCHAL, Commissariat à l'Energie Atomique (IPSN.DPT.STEP.ARMOR)
J. F. COUCHOURON, Centre Océanologique de Bretagne
Collecting deep sea polymetallic nodules leads to numerous theoretical and technological problems.
Feasability studies of the hydraulic lift option as well as the shuttles operations are under the responsibility of the GIP* GEMONOD.
The PLAZ shuttle, designed and built by the CEA, can be considered as a testing platform for the behaviour of locomotion and dredging devices. The project is presented separately by ARMOR, the CEA team in charge of its completion.
This transaction is devoted to the necessary hydrodynamic studies done curing the first phase of the project to predict the flight and landing characteristics of an autonomous underwater shuttle including :
-Explicit form of NEWTON governing equations for the PLAZ
-Numerical determination of some hydrodynamic coefficients (added mass 8nd
coupling coefficient given by the inviscid fluid theory)
-Experimental determination of the hydrodynamic coefficients of viscous origin
-Free flight experimental validation for an instrumented 1/5 scale model in a deep pool at COB facilities and comparison of the results obtained through an on-board data acquisition system developed by the CEA-LETI and the acoustic trajectometry system of the COB pool
-Recording of the flight characteristics of the model at sea for numerical calibration.
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