2.75-Inch, Hydra 70, PA151, Rocket Pallet First Article Testing (FAT)

Abstract

The U.S. Army Defense Ammunition Center (DAC), Validation Engineering Division (SIOAC-DEV), was tasked by U.S. Army Armament Research, Development and Engineering Center (ARDEC) to conduct MIL-STD-1660, Design Criteria for Ammunition Unit Loads, First Article Testing (FAT) on the 2.75-inch, Hydra 70, PA151, rocket pallet produced by Delfasco of Tennessee, Greeneville, TN and Lockheed Martin, Burlington, VT. The MIL-STD-1660 testing revealed several design deficiencies that had to be corrected before the pallet would pass the MIL-STD-1660 test criteria. Modifications that were made to the pallet design included a larger pallet adapter aligning pin and strengthening plates under the pallet deck above the four comer pallet posts. After these modifications were made, the pallets were able to meet MIL-STD-1660 test criteria. Prior to discovering these problems, Delfasco and Lockheed Martin had fabricated and welded several hundred pallets and adapter sets. These pallets and adapters did not meet MIL-STD-1660 test criteria so they could not be accepted without modifications. Several attempts were made before an acceptable modification was found. The modification consisted of side reinforcers that were welded to the inside and outside of the four corner posts of the pallet. The modification did not eliminate all the cracking in the deck that occurred during the testing, but did prevent the pallet post from pushing through the deck in a potentially damaging fashion as occurred during the testing of the original pallet design. The modified pallets were approved for U.S. Army (USA)-wide use, but only as a means for utilizing those pallets that were already fabricated. All future pallet production was to use the strengthening plates under the deck above the four corner pallet posts.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1997
Accession Number
ADA353061

Entities

People

  • Quinn D. Hartman

Organizations

  • Defense Ammunition Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Ammunition
  • Deficiencies
  • Design Criteria
  • Drop Tests
  • Engineering
  • Frequency
  • Impact Tests
  • Industrial Engineering
  • Materials
  • Munitions
  • Pallets
  • Shock Tests
  • Standards
  • Tennessee
  • Validation
  • Vibration

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  • Logistics and Supply Chain Management.