Dahlgren on Shrapnel, part 2: “these results are only to be considered as general terms”

As discussed earlier, while working on a system of boat howitzers to equip the US Navy, John Dahlgren conducted a detailed study of the behavior of shrapnel.  He identified three factors which governed the performance of shrapnel, from a target point of view, and thus would provide the requirements for the practice of fire forContinue reading “Dahlgren on Shrapnel, part 2: “these results are only to be considered as general terms””

Dahlgren on shrapnel (case shot): “… even a tolerable approximation … not likely to be undervalued…”

As I’ve opened the ball here, I feel bound to continue the discussion about the practice of case shot… and in particular how this was related to those training to man the guns.  Let me say again for emphasis – the conundrum here is that very little is offered in the manuals (US manuals, butContinue reading “Dahlgren on shrapnel (case shot): “… even a tolerable approximation … not likely to be undervalued…””

Case shot and practice of fire: A conundrum?

Consider this figure: This particular figure appeared in “Elementary Lectures on artillery: Prepared for the use of the gentlemen cadets of the Royal Military Academy” by Captains Charles Henry Owen and Thomas Longworth Dames, published in 1861.  And as “Royal” implied, these were English officers and not Americans.  Still, the technology was the same andContinue reading “Case shot and practice of fire: A conundrum?”