Blast Response of 35 ft Fibreglass Whip Antenna - Event Dice Throw,
Abstract
The blast response of 35 ft fibreglass Whip Antennas was investigated in a free-field blast trial and in numerical simulation experiments. The antennas satisfactorily withstood the air blast loading at nominal 7.0, 10.0 and 12.2 psi peak overpressure locations in Event Dice Throw. The numerical model predictions for the natural frequencies are in excellent agreement with results obtained experimentally, however the corresponding predictions for the transient strain using drag coefficients based on previous trials were approximately double the values obtained experimentally. Subsequent revised numerical predictions for the transient strains using experimental drag coefficients obtained independently in the blast trial itself have produced results in more reasonable agreement with the experimental transient strains. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1977
- Accession Number
- ADA048357
Entities
People
- C. G. Coffey
- G. V. Price
Organizations
- Defence Research and Development Canada