Search found 3095 matches

by Dave Saxton
Sun Feb 20, 2005 5:22 am
Forum: Naval Technology
Topic: About TDS
Replies: 31
Views: 10962

When HMS Prince Of Wales was sunk on Dec 10, 1941 the starboard voids were all flooded in compensation to the heavy list to port. Four torpedos later struck the starboard side. The British determined the effects of the later torpedos extended much deeper into the ship, because the TDS on the starboa...
by Dave Saxton
Wed Feb 16, 2005 12:22 am
Forum: Naval Technology
Topic: Tirpitz plate results...
Replies: 63
Views: 30942

I don't know for certain what the tempature of the plates would become during a magazine fire. However, the critical transition tempatures for armour plates are not that high. I calculated using a computor program, that a material like Ww would have a martensite start temp, of only about 270* C, and...
by Dave Saxton
Mon Feb 14, 2005 10:04 pm
Forum: Naval Technology
Topic: Tirpitz plate results...
Replies: 63
Views: 30942

.....I'm not sure I read anything in either report about the methodology used to cut the plates. But along these same lines, I wonder if some of the plates in the various firing trials were damaged as a result of the hits by the 12,000-lbs Tall-Boys, or the subsequent magazine explosions. Any chanc...
by Dave Saxton
Mon Feb 14, 2005 12:00 am
Forum: Naval Technology
Topic: Tirpitz plate results...
Replies: 63
Views: 30942

....I have never come across any sort of official lab report or testing doctrine from say Aberdeen, Dahlgren or NPL that would seemingly corroborate any of the above. .... . The 330mm set back rule for 75mm projectiles that was used for this ballistic weld trial, seems to be Aberdeen's rule. This t...
by Dave Saxton
Fri Feb 11, 2005 4:16 am
Forum: Naval Technology
Topic: Tirpitz plate results...
Replies: 63
Views: 30942

While reading about American armor welding today, I read something that may be related to the original question pertaining to this thread. It was about ballistic testing of welds on 38mm thick armor plates. Basically, two plates were butt welded together, and the weld seam was hit by a 75mm projecti...
by Dave Saxton
Mon Feb 07, 2005 3:10 pm
Forum: Naval Technology
Topic: Tirpitz plate results...
Replies: 63
Views: 30942

What are these homogenious plates reffered to? Do we know when these plates were made, or much about their history? Is there any data such as the chemical composition? Is there any indication how the trials on these plates went?
by Dave Saxton
Mon Feb 07, 2005 1:20 am
Forum: Naval Technology
Topic: Metallurgical Study Of Enemy Ordnance
Replies: 44
Views: 34740

Hi Marty, I must offer an apology for my late reply once again. I had started to write a few times but ran out of time. I had wanted to include more detailed data from documents I have recently encountered, but I only have limited time. The title of the peice is Metalurgical Study Of Enemy Ordnance....
by Dave Saxton
Sun Jan 09, 2005 6:22 pm
Forum: Bismarck General Discussion
Topic: Stern section of the Bismarck - question
Replies: 116
Views: 53254

Some of the problems shared by those who began to replace riveting with welding for warship construction during this period are: *Joint design. Engineers still had an affection for overlap joints during this period, indicating a lack in faith of butt welds. This led to the overuse of weaker fillet w...
by Dave Saxton
Sun Jan 09, 2005 5:28 am
Forum: Bismarck General Discussion
Topic: Stern section of the Bismarck - question
Replies: 116
Views: 53254

I wouldn't mind a more general discussion of warship welding, circa WWII, not necassarly centered around the Bismarck's stern. It's such a lightning rod for pointless argument. There are many aspects and systemic problems to warship welding, worldwide, during this period, that are not well understoo...
by Dave Saxton
Sat Jan 08, 2005 11:29 pm
Forum: Bismarck General Discussion
Topic: Stern section of the Bismarck - question
Replies: 116
Views: 53254

Okay, I missunderstood the context of your comment. Is your comment in the context of US warships only, or also US commercial ships, and is it in the context of structrual design, and/or joint design, or welding execution? May I inquire to what the strong evidences against a systemic problem involvi...
by Dave Saxton
Sat Jan 08, 2005 11:05 pm
Forum: Bismarck General Discussion
Topic: Stern section of the Bismarck - question
Replies: 116
Views: 53254

Re: More storm damage reports.

Tiornu wrote:This is strong evidence that there was no systemic problem with USN hulls.
Does this imply that the problems encountered by others were systemic?
by Dave Saxton
Sat Jan 08, 2005 10:55 pm
Forum: Bismarck General Discussion
Topic: Stern section of the Bismarck - question
Replies: 116
Views: 53254

Re: A storm damaging a BB shaft...

No idea about what caused fault here with Iowa: December 17-18 At Ulithi for replenishment and maintenance. Lost plane - washed over the side during typhoon. Damage to shaft caused by storm required USS IOWA to return to the United States for overhaul at Hunters Point Shipyard, San Francisco.  As ...
by Dave Saxton
Mon Jan 03, 2005 8:29 am
Forum: Bismarck General Discussion
Topic: A few observations about of Bismarck's failed stern section
Replies: 7
Views: 4839

A few observations about of Bismarck's failed stern section

Since I don't want to get involved in the exchanges taking place on that other thread, I thought I would post some mainly technical observations about the weld designs and weld execution to the detached stern section. The implied conclusion of much of the recent posts, and many secondary, and tertia...
by Dave Saxton
Mon Jan 03, 2005 6:47 am
Forum: Bismarck General Discussion
Topic: Torpedo and splinter bulkheads
Replies: 6
Views: 4589

Re: George Elder

...... Dave Saxton is the expert here, and he has found much information on this subject. George I'm certianly no "expert" when it comes any of this stuff! I'm doing what I can to educate myself better, and I do try to share what I learn with others, as well as share some of what I have observed in...
by Dave Saxton
Mon Jan 03, 2005 6:05 am
Forum: Naval Technology
Topic: Metallurgical Study Of Enemy Ordnance
Replies: 44
Views: 34740

Hi, I havn't had the opprotunity to spend much time on line recently, so I apologize for not responding to your question earlier. No, it doesn't give specific mathmatical velocity data on ballistic limits. The report was done by US metalurgy experts, and it reports the typical metalurgy data such as...