SHIPBOARD LATTICE ANTENNA MASTS UNDER BLAST LOADING. PART 1: STRAINS IN MODEL MASTS IN OPERATION PRAIRIE FLAT AND EVENT DIAL PACK

Authors
  1. Walkinshaw, D.S.
  2. Laidlaw, B.G.
  3. Long, B.R.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
Experimental strains are presented for the response of one 15 feet high and two 30 feet high lattice mast structures subjected to air blast loads in the 500 ton TNT explosions, Operation PRAIRIE FLAT and Event DIAL PACK. The tubular aluminum space frame masts, each with an eccentric side antenna, responded in their elastic and elastic-plastic ranges under field pressures ranging from 8.5 to 20 psi. No severe permanent deformations were observed for any of the tests. The results indicate that the effective loading on these drag targets varied as the square of the free field blast overpressure.
Keywords
Aerial explosions
Report Number
TP-402 —
Date of publication
15 May 1973
Number of Pages
68
DSTKIM No
73-06278
CANDIS No
20694
Format(s):
Originator's fiche received by DSIS

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