The YS2000 program is a 72 meter length and 10.5 meter width all composite Corvette class vessel. It displaces 650 metric tons when fully equipped and drafts 2.5 meters. It is to be crewed by 18 officers and 25 enlisted men. It is a CODOG propulsion system supplied by Vericor Power Systems (VPS), with two MTU 16V 2000 M90 diesels and four TF50A gas turbine engines. Both the diesels and gas turbines are connected to a pair of MA-107 SBS gearboxes that run two 125 SII KaMeWa water jets. The Visby is designed to be difficult to detect by enemy using radar, infrared, hydro-acoustic monitoring or any other sensor system. The Visby has been in development in Sweden since 1999. To date, five craft have been constructed and sea trialed. Many refinements to the overall propulsion package and related supporting systems have been revisited and incorporated since the first “Visby” ship has been sea trialed and further entered in to service. This paper will focus on various areas of the entire gas turbine propulsion management system (GTPMS) that had earlier exhibited some operational issues and will review the challenges that had to be overcome in order to remedy them. The areas of interest will be related to one of the several TF50A turbine engines modifications, and then further review other key related supporting systems, to include the installation of the hydraulic engine starter and water wash system, combustor enclosure and the engines related exhaust and inlet systems issues, to include problems experienced as a result of some of the early initial designs. In conclusion this paper will update the subject topics the findings previously presented and again focus on some of the before and after results and attempt to detail some of the specific challenges that had to be overcome to make this one of the finest propulsion packages in this class of ship.

This content is only available via PDF.
You do not currently have access to this content.