As of May 2026, is listed as an active, "Controlled Distribution" document, having last been reviewed and validated on February 9, 2023.
The principles of MIL-STD-167-2A are applied in real-world engineering and testing scenarios.
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Prevents equipment failure during critical wartime scenarios or severe sea states. mil-std-167-2a pdf
Main propulsion shafting components and heavy reciprocating pistons.
is a Department of Defense standard specifically covering mechanical vibrations of shipboard equipment, focusing on reciprocating machinery and propulsion systems. It is the companion to the more common MIL-STD-167-1A , which focuses on environmental and internally excited vibrations for general equipment. 🛠️ Core Purpose
Prevents catastrophic mechanical failures that could compromise the ship's operational capabilities or endanger the crew. As of May 2026, is listed as an
Subjecting the equipment to prolonged vibration at its most severe resonant frequencies to test structural integrity. Who Needs a MIL-STD-167-2A PDF?
Compliance with MIL-STD-167-2A involves a structured verification process. Engineering teams must follow these key steps:
You can locate, view, and download the document directly through the DLA ASSIST QuickSearch portal, which serves as the official Department of Defense index for military specifications and standards. Why Compliance Matters As of May 2026
These sections are critical for ensuring that propellers and shafting systems do not fail due to resonant conditions.
For Type I (Environmental) and Type II (Internally Excited) vibration.
Procedures for measuring the torsional and lateral vibration of the main propulsion shafting.
The equipment is outfitted with sensors and monitored during actual operation or simulated stress environments to verify that the mathematical models match real-world performance. Where to Find an Official MIL-STD-167-2A PDF