MIL-STD-167-2A focuses on the heavy machinery that moves a ship, covering . It outlines the requirements for three specific vibration types crucial for propulsion system integrity:
Prevents equipment failure during critical wartime scenarios or severe sea states. mil-std-167-2a pdf
Machinery must be evaluated for vibrations occurring perpendicular (lateral) and parallel (longitudinal) to the main shaft axis. This section details how to identify critical speeds—ranges where the operating speed matches the natural frequency of the system, causing resonance. 3. Environmental Vibration Testing MIL-STD-167-2A focuses on the heavy machinery that moves
Requirements for minimizing internally induced vibration from rotating components. Summary Table: MIL-STD-167-1 vs. MIL-STD-167-2 Summary Table: MIL-STD-167-1 vs
The current standard is the result of decades of refinement.
MIL-STD-167-2A is a U.S. Department of Defense standard regulating mechanical vibrations specifically for shipboard propulsion systems and reciprocating machinery. The standard defines acceptance criteria, testing, and measurement methodologies to ensure equipment reliability under operational stress. For direct access to the document, search the ASSIST QuickSearch database . MIL-STD-167-2A CONT. DIST. - NAVY - Standards | GlobalSpec