Analyzes the "back-and-forth" motion along the axis of the propulsion system. Crucial for preventing thrust bearing failures.
Targets reciprocating machinery (like diesel engines) and propulsion shafting. mil-std-167-2a pdf
It specifically covers the vibration environmental requirements for shipboard machinery, equipment, and systems on surface ships and submarines. The "2A" revision is the current active version, superseding the original MIL-STD-167-2. Analyzes the "back-and-forth" motion along the axis of