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~ Current Project Status ~

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April 2003

MTTC / Navy Fleet Maintenance Reduction Projects
Current Status As of 04/01/2003

Aircraft Carrier Elevator (ACE) Roller Guides: MTTC now has Technical Direction from the Navy and has commenced its technical search. Penn State University has been invited to participate. Several potential concepts have already been identified and are being explored further with the vendors.

Vibracon: Shock Testing has been completed at Hi-Test Laboratories. The Navy has determined that, initially, the shock will be approved for small applications such as motors and pumps. To that end, a shock extension letter is being drafted and will be promulgated in the near future. Additional uses will be evaluated as they arise.

DDG Valve Actuators: USS ARLEIGH BURKE (DDG-51) is the designated test ship. Three actuator models were installed in November-December 2002: Auma, Limitorque and Rotorque. Additionally, Bath Iron Works is installing actuators on two DDGs: Tri-Tec on USS HIGGINS (DDG-76) and Nutorque on USS GONZALEZ (DDG-66). At sea testing has commenced on these installations.

Variable Speed Drive: MTTC has awarded a contract to NAVSSES Philadelphia to develop and produce a VSD in the 18-22 HP/ft(3) power density range that meets military requirements. This effort is expected to take ten months.

Magnetic Couplings: Six couplings have been procured. Two have been installed on elevator hydraulic pumps on USS NIMITZ (CVN-68).Shortly, another coupling will be used on the Air Conditioning Chill Water Pump on a west coast CVN and three more applications on an east coast CVN.

Scullery Dishwashers: MTTC, using experienced commercial appliance engineering expertise, has visited a number of ships to observe the dishwasher in its operational environment and has developed a list of probable fixes for the problems noted. Currently, MTTC is modifying a used dishwasher to evaluate the proposed fixes and make recommendations for a MACHALT kit.

UNREP Phone/Distance Line: A change to NWP-4 that would permit the use of laser rangefinders during most UNREPs has been drafted and is in review. NAVSEA has purchased an updated laser/billboard station that will be validated at sea when test ships become available.

Distiller Anti-Scale: The prototype unit is ready for at-sea testing. Plans to install on a west coast ship have been delayed because the USS CARL VINSON (CVN-70) (Smart Ship) availability work package has been overloaded. NSWC/Philadelphia is now looking at the next available ships.

Vertical Package Conveyors: All shore-based testing has been completed at the NSWC/Philadelphia land-based test site. Prototype systems have been installed on USS CARL VINSON (CVN-70) and USS THEODORE ROOSEVELT (CVN 71). Feedback to date has been very positive.

CIWS Acutator Cam Pin: The Navy has completed testing on the cam pin and has approved it, with very minor modification, for retrofit into fleet systems. Fixtures and instructions are being developed by General Dynamics, Burlington VT and will be issues to Navy Intermediate Level Activities (IMAs) this year. The upgrade will be installed when an ammunition handling system is brought in for maintenance at the IMAs.

Speedwrap Insulation: The 12-month inspection onboard the USS THEODORE ROOSEVELT (CVN 71) was conducted on 25 November 2002. As in the May 2002 inspection, results were positive. The pads were holding up very well and the temperature reductions in spaces such as the laundry, dry cleaning space and CPO Berthing were confirmed. As soon as the results are formally reported, NAVSEA will make a utilization determination.

Electrospark Deposition (ESD): NAVSEA comments have been received on the draft instruction. The instruction is being revised. Another qualification plate will then be produced. After the procedure has been proofed, NSWC/Carderock will proceed with repairing the control rod in their lab.

Firezone Joiner Doors: There were an insufficient number of commercial responses to the NSWC/Philadelphia Sources Sought Announcement, issued February, 2003. As a result, special electronic inquiries were sent to marine door manufacturers in Europe. To date, only a few have responded. MTTC and the Navy are currently discussing future initiatives.

Hatch Gas Springs: Gas cylinders have been received by the manufacturer. Few installation problems have been noted with raised hatches. Because of the weight and design of the low profile (flush deck) hatch, NSWC/Philadelphia and the manufacturer are having to modify the gas cylinders and hinge arms to acount for the period of time when the hatch is opened greater than 90 degrees. Work is progressing.

Self-Cleaning Strainer: A test strainer has been procured and shipped to Noise Unlimited Laboratories (NU Labs) in Annandale, NJ. The shock, vibration and EMI test plan is under review by NSWC Philadelphia. Testing will commence in the next few months.

Please Give Us A Call

For additional news or information about opportunities involving Navy Fleet Maintenance Reduction, contact: Dick Gilbert [email protected]

Phone: (502) 452-1131 Ext. 307

Fax (502) 451-9665

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MTTC is a U.S. Navy Sponsored Center

Back Issues

MTTC Navy Projects

For more information how MTTC can help your company benefit from the Fleet MaintenanceReduction Program, contact Dick Gilbert: [email protected]   

(502) 452-1131.



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