| Abstract [eng] |
The analysis of steps of conceptual design of an autonomous (unmanned) surface vehicle (USV) purposed for measure and collecting bathymetric data according to IHO (International Hydrographic Organization) standards in ports, inland waters and open sea is presented in this paper. The attention in this paper focuses on optimization of USV autonomy (longer possibility to operate without renewing energetic resources) – characterising separate elements witch influence vehicle autonomy: effective energetic system and effective hull-propulsion complex. The unmanned surface vehicle purposed for bathymetric survey is preprogrammable in advance by hydrografer-operator by loading bathymetric survey area data, then vehicle are activated and launched for operation. USV autonomously proceeds to survey area, collects bathymetric survey data and sails back to initial or other point of destination. Collected bathymetric survey data can be downloaded and used for hydrography purposes. There is no systematic unmanned surface vehicle design methodology till these days. The unmanned surface vehicles usually are comparative small in size, unlike the conventional ships are equipped with different ship systems, and requirements for those vehicles depends by special characteristic of the main task. The design and construction of conventional ships, pleasure crafts and yachts are regulated by international and national rules and regulations, even automatic ship design software are provided with integrated regulation checking functions. The analysis for ship design methodology of foreign and Lithuanian authors was done in this paper and lack of systematic methodology for unmanned surface vehicles design was defined, therefore the feasibility analysis of USV design methodology and algorithm of methodology for unmanned surface vehicle design was presented, which was assessed in comparable analysis of USV design methodology. |
