CUVX Design Report - the AOE home page - Virginia Tech

CUVX Design – VT Team 2 Page 67Fuel and lube oil purifiers are sized relative to the fuel and oil consumption of each engine. There are twopurifiers per Main Machinery Room. One is for normal use and the other is for redundancySix distillers are used to produce potable water from seawater. Reverse osmosis distillers are used. They arelocated in the MMRs. They are sized based on 0.24 m 3 of water per man per day requirement. For CUVX HI3’s900 man crew, six 40 m 3 per day distillers were needed. Potable water pumps are used to pump water from thedistillers to the potable water tanks.Six air conditioning plants and two refrigeration plants are required for CUVX HI3. The air conditioning plantsare sized based on crew size and arrangeable area, with 6 a/c plants at 450 tons each. The refrigeration plants aresized at 10 tons per 200 crew, so two refrigeration plants at 25 tons each were needed with 2 additional plants forredundancy. JP-5 pumps and filters are located in the JP-5 pump rooms located in MMR1 and MMR24.5.3 Ship Service Electrical DistributionCUVX HI3 has an integrated power system (IPS) in which the ship service power is distributed from any of thefive propulsion buses or SSDG’s via a zonal bus, as shown in Figure 59. Power Control Modules (PCMs) arelocated in each zone to convert ship service power as required, provide circuit protection and automaticreconfiguration. They are able to convert AC to DC and DC to AC as required. Electric power may be taken fromany of the 3 propulsion switchboards, one in each main machinery room or 2 ship service switchboards. Power fromthe main switchboards is converted from 4,160 volt, 3-phase, 60 Hz to ship service 480 volt, 3-phase, 60 Hz bypower conversion modules supplying also the port and starboard ship service zonal buses. The SSDG buses areconnected to the zonal buses but supply 480 volt, 3-phase, 60 Hz directly and do not need power conversionmodules. Figure 59 shows the power takeoff from the zonal ship service buses to the vital and non-vital ship loads.The ship is divided into 10 CPS and Electrical Distribution Zones (Hangar Decks are a zone and AEM is anotherzone not pictured). Electric power is taken from the zonal buses in each zone through the power conversionmodules. If there is a vital system in a zone it draws power from both the port and starboard buses through a powerconversion module and an ABT which is an automated switch to either bus in case of power loss of one of the zonalbuses.Zonal systems are also used for the ship’s fire system and Collective Protection System. Fire mains are locatedon the Damage Control Deck and fire pumps in each zone. CPS zones are separated by air locks with airlocks on allexternal accesses. The hangar decks are within CPS zones. Aircraft Elevators 1 and 3 both have external covers withthe space between elevator and cover acting as an airlock and aircraft decontamination station. The unmannedlaunch deck serves as one large airlock with an external access door and internal door/jet blast deflector.4.6 Aircraft Systems4.6.1 AircraftThere are 28 UCAVs carried on CUVX-HI3. The UCAVs chosen for this ship are designed by the VirginiaTech UCAV-N Design Team as described in Section 3.2.5.1. When the wings and tail of the UCAV are folded ithas the dimensions of 9.2 m wingspan x 9.7 m long x 4.4 m high. The wings and tail are unfolded only when theplane is ready to launch. When the wings and tail are unfolded the wingspan increases to 13.7 m and length to 10.7m. The aircraft has a weight of 12 MT. The maintenance facilities for these planes are located on Hangar Deck 3with the ability to service two planes at a time. These aircraft are launched using the EMALS and recovered on therecovery deck. Fueling and weapons load-out take place on Hangar Deck 1.CUVX-HI3 carries 18 UAVs. The UAVs selected for use on this ship are the Shadow 400. The Shadow 400was selected because it a proven aircraft already in military use. These UAVs are stored in individual boxes withdimensions 3 m long x 1.5 m wide x 2 m high. When they are assembled these aircraft have the dimensions 3.8 mlong x 5.1 m high x 2 m high. The assembly process for these aircraft will take place next to their storage areas onHanger Deck 2. These aircraft will be fueled at the same fueling stations used for the UCAVs and launched usingeither of the EMALS. If for some reason the EMALS are down these aircraft have a compatible portable launchingsystem approximately the size of a shipping container that can be used. These aircraft are recovered on the recoverydeck in the same fashion as the UCAVs. This aircraft is shown in Figure 60.