Hydraulic Ram Repair
Problem: Many vital shipboard control systems, such as
rudders and diving planes, are driven by hydraulic rams. When these rams are scored or
damaged, they must be removed, repaired ashore and then returned and re-installed on the
Solution: Electrospark deposition (ESD) shows promise
as being an acceptable way to perform onboard ship repairs of these large, critical
devices. MTTC and NSWC/CD will perform this effort.
Minimum 15 Year:
While damage to hydraulic rams may not be
preventable, repair using ESD could save as much as 75% of the current
time used to repair ashore. It also avoids additional damage caused
while moving the rams around.
laboratory process verification test had to be conducted on a fleet
asset diving plane rod. Therefore, the process had to be approved
prior to testing since the rod would eventually be issued to the
fleet. This caused a change in the program plan since approval must
proceed test instead of using testing to obtain process approval. Full
approval must be obtained before the ESD system is used onboard a
Ship and Submarine hydraulic rams used in all applications.