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May 25 17 1:04 AM
May 25 17 5:38 AM
The Woolwich explosion of 1903 was thought to have been caused by metal picrate formation while filling a shell (although no one was entirely sure how that might have happened), they were entirely alive to the dangers and would not have allowed suspect shell on board ship.
May 25 17 8:39 AM
May 25 17 11:25 AM
MarkLBailey wrote:these shells did not display excessive sensitivity at first but developed it later. I'd like to know what else explains this except some kind of chemical deterioration in the Lyddite over time.
May 25 17 1:21 PM
May 25 17 3:49 PM
May 28 17 2:17 PM
Blutarski wrote:Hi Mike - Cannot speak to picrates issue, but Lyddite definitely had a high sensitivity to impact shock, which would often cause a premature detonation before the fuze had time to act.
May 28 17 7:04 PM
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May 30 17 1:36 AM
Phil Gollin wrote:.
Well I found three references for the WW1 "Shell Committee" ;ADM 186/167 Shell Committee : interim report - 1917ADM 186/168 Shell Committee : second interim report - 1918ADM 186/169 Shell Committee : reports 1917 and 1918 - 1918
May 31 17 6:14 AM
May 31 17 11:36 AM
May 31 17 3:03 PM
MarkLBailey wrote:Thanks Phil, I do appreciate the response. I am in early stages of planning another raid on Kew, and I will look to photograph these files. Absolutely fascinating.
I appreciate that it's a fair amount of work to did into your references.
I believe this starts to offer a partial explanation as to why the 6" fire from Good Hope and Monmouth was so ineffective at Coronel. We know that they hit S&G much more often than is normally believed, because the Germans only reported as hits those which caused damage. Sensible approach IMHO. The 4" dud from Glasgow gets a mention as it was rolling about on the deck.
There was (really) just one hit which caused significant damage, but later observers noted a lot more evidence of strikes on the ships where shells had burst on impact and done little more than scar the paint.
I think that you will find the Final Report of the President of the Projectile Commission [Sep 1917] especially interesting. It contains a number of photographs which, for example, show the dramatic differences in fragmentation behavior of AP lyddite versus CPC black powder filled. The conclusion of the report was that, pending development and provision of an improved AP projectile to the fleet, CPC was the best projectile for use against capital ship targets at prevailing combat ranges; use of the pre-war AP lyddite was recommended only at ranges </= 8,000 yards against targets on a parallel course .... where striking obliquity would be minimized.
Re your study of Coronel, I think it might be profitable to determine (if indeed possible) what the ammunition outfits of the British ships were. A lot of old ammunition was still on hand and these were old ships with old pattern guns. They might have had old cast steel black-powder filled common shell.
May 31 17 9:53 PM
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