군수지원함의 추진체계별 연료 소비량에 관한 연구

Abstract

Last March 26, 2010, at sea near Baengnyeongdo in Republic of Korea, Patrol corvett Cheonan(PCC-772) which had been belonged to the Republic of Korea Navy 2nd fleet at that time was hit and sank during performing the duties. This was the case in the Republic of Korea Navy sailors 40 people died, 6 people were missed. The Government of the Republic of Korea was composed of civil and military joint investigation team to investigate the caused of sinking Cheonan. Investigators from five countries, Australia, the USA, Sweden, UK including the Republic of Korea experts consisting of more than 20 people, announced May 20, 2010, that the Cheonan sank under the torpedo attack by a North Korean submarine. After the incident, the Republic of Korea Navy has been provided a way to improve the ability of anti-submarine naval vessels to prepare for North Korean submarine attack, so a plan to mount an electric motor that can reduce underwater radiated noise significantly compared to internal combustion engine had been discussing as a way to prepare such submarine attack, that hybrid propulsion system will be installed on next term FFX BATCH-II frigates and AOE-II combat support ship.

Meanwhile, the US Navy has conducted a lot of research in order to cut the fuel consumption of a large formation of warships in accordance with a fluctuation of international oil price and reduction of the national defense budgets. For example, they had developed HED(Hybrid Electric Drive) system which were installed on the DDG-51 Arleigh Burke-class mechanically propelled destroyer with four gas turbines in the last early 1990s. Using the HED system, an example of hybrid propulsion system, is shown as having a high fuel efficiency to reduce the fuel consumption compared to conventional propulsion system using olny gas turbines because it operates electric motors instead of gas turbines which are features of bad efficiency during lower speed range of warship.

Also as electrical, electronic and communication technology are developed rapidly, aspects of war are being turned conventional warfare oriented naval guns into electronic warfare. Therefore linked antisubmarine, antisurface and antiair warfare are required simultaneously, so initial maximum power capacity of next term warship should be designed much bigger than conventional vessel with mechanical propulsion system. This is because RADR weapons system such as AESA(Active Electronically Scanned Array) and PESA(Passive Electronically Scanned Array) RADAR require much electric power And in order to install and operate LaWS(Laser Weapon System) such as rail gun, the maximum power capacity must be considered. Thus, improving quietness of warship to prevent submarine attack is that reforming survivability of warship, and extending cruising range by making energy efficiency high is that improving military action and ability of achievement in case of warship. Accordingly, in this paper, we set up any virtual navy vessel based on the actual navy vessel that is operating in the Republic of Korea Navy, with the assumption that the mechanical and hybrid propulsion systems that virtual navy vessel was to be simulated the annual fuel consumption that occur during certain operating profile.