The official statement
MDV 601 Heft 13 Operationen von Flottenstreitkräften im Nordpolarmeer im Jahre 1942
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- Fri Jan 21, 2011 8:29 pm
- Forum: Naval History (1922-1945)
- Topic: Tirpitz AA Fire
- Replies: 23
- Views: 5592
- Fri Jan 21, 2011 8:16 pm
- Forum: Naval History (1922-1945)
- Topic: Battleship Vittorio Veneto
- Replies: 100
- Views: 29753
Re: Battleship Vittorio Veneto
According Unterlagen zu Bestimmung Hauptkampfentfernung bla bla bla :wink: theoretical hit probability for batteryshootings of SK 38 at a target 30m wide at 25 km 15,5%, flight time 43 sec, 50% zone 120 m lenght ~25m breadth 30 km 11,1%, flight time 55 sec, 50% zone 140 m length ~30m breadth 35 km 8...
- Wed Jan 12, 2011 8:17 am
- Forum: Naval History (1922-1945)
- Topic: Battleship Vittorio Veneto
- Replies: 100
- Views: 29753
Re: Battleship Vittorio Veneto
As far as I can see the origin document RobertsonN is referring to, is ADM 281/31 The Ballistic performance of Spaced Armour Assemblies and the effect od varying the Arrangement of plate thickness but this report deals with decapping effects of plate arrangements and their comparative performances u...
- Fri Jan 07, 2011 9:03 pm
- Forum: Naval Weapons
- Topic: Terminal Velocity of Bombs
- Replies: 26
- Views: 16788
Re: Terminal Velocity of Bombs
No problem
Falltimes of Fritz X at drop height
36,8 sec at 6000 m
40,0 sec at 7000 m
according Besprechungsniederschrift from March 20th 1943)
Falltimes of Fritz X at drop height
36,8 sec at 6000 m
40,0 sec at 7000 m
according Besprechungsniederschrift from March 20th 1943)
- Fri Jan 07, 2011 6:43 pm
- Forum: Naval Weapons
- Topic: Terminal Velocity of Bombs
- Replies: 26
- Views: 16788
Re: Terminal Velocity of Bombs
Seems to me the speed must be somthing wrong maybe 1.100ft/secTallboy had a terminal velocity of ~1,100 m/sec which would require a drop from over 5,500 m.
terminal velocity of 1,100m/s requires roughly 110 sec of free fall, even if we neglect air resistance
v=a*t
1100m/s~9,81m/s²*110s
- Wed Jan 05, 2011 8:22 pm
- Forum: Naval Technology
- Topic: Elongation of Homogeneous Armor
- Replies: 38
- Views: 13651
Re: Elongation of Homogeneous Armor
main link to warships-forum
http://warships1discussionboards.yuku.com/
or indirekt via
http://www.navweaps.com/
there is a link "Discussion Boards"
http://warships1discussionboards.yuku.com/
or indirekt via
http://www.navweaps.com/
there is a link "Discussion Boards"
- Wed Jan 05, 2011 5:01 pm
- Forum: Naval Technology
- Topic: Elongation of Homogeneous Armor
- Replies: 38
- Views: 13651
Re: Elongation of Homogeneous Armor
My name at navweaps is Thoddy.
in my eyes it is necessary to clarify technical meanings, before a certain discussion on the material properties get started.
The "elongation problem" is central part of any discussion on german armor properties, as it has been used to assume some inferiority.
in my eyes it is necessary to clarify technical meanings, before a certain discussion on the material properties get started.
The "elongation problem" is central part of any discussion on german armor properties, as it has been used to assume some inferiority.
- Thu Dec 23, 2010 5:54 pm
- Forum: Naval Technology
- Topic: Barr & Stroud Dreyer vs. German Zeiss
- Replies: 27
- Views: 14408
Re: Barr & Stroud Dreyer vs. German Zeiss
seems to me its an pointerror, probably 4300 m, even the Kriegsmarine is not free of errors
- Wed Dec 22, 2010 8:52 pm
- Forum: Naval Technology
- Topic: Barr & Stroud Dreyer vs. German Zeiss
- Replies: 27
- Views: 14408
Re: Barr & Stroud Dreyer vs. German Zeiss
hires
hint each line is representing the result from measurement series of 30 or so individual measurements
10 U... 10m Basisgerät
6 U ... 6m Basisgerät
3 U ... 3m Basisgerät
as you can see they also conduct long range as well as short range training
and a exercise
hint each line is representing the result from measurement series of 30 or so individual measurements
10 U... 10m Basisgerät
6 U ... 6m Basisgerät
3 U ... 3m Basisgerät
as you can see they also conduct long range as well as short range training
and a exercise
- Tue Dec 21, 2010 6:09 pm
- Forum: Naval Technology
- Topic: Barr & Stroud Dreyer vs. German Zeiss
- Replies: 27
- Views: 14408
Re: Barr & Stroud Dreyer vs. German Zeiss
Very old thread but here is some useful information on the accuracy of optical rangefinding
achieved results of Panzerschiff Deutschlöand during 1st half 1937
achieved results of Panzerschiff Deutschlöand during 1st half 1937
- Thu Dec 16, 2010 7:49 pm
- Forum: Bismarck General Discussion
- Topic: Total number of shells fired by Bismarck and straddles
- Replies: 103
- Views: 24721
Re: Total number of shells fired by Bismarck and straddles
the director layer firing on the up roll instead of using the gyro-stabilized firing circuit in the fire control center, rapid roll might have caused the shells to leave the muzzles just very slightly late, bearing in mind there is a finite time between closing the firing circuit and the instant th...
- Tue Dec 14, 2010 8:21 pm
- Forum: Hypothetical Naval Scenarios
- Topic: KGv class with different guns
- Replies: 145
- Views: 19049
Re: KGv class with different guns
possibly yes
- Mon Dec 13, 2010 4:52 pm
- Forum: Hypothetical Naval Scenarios
- Topic: KGv class with different guns
- Replies: 145
- Views: 19049
Re: KGv class with different guns
I couldnt find the origin until now.
- Mon Dec 13, 2010 4:38 pm
- Forum: Naval History (1922-1945)
- Topic: Battleship Vittorio Veneto
- Replies: 100
- Views: 29753
Re: Battleship Vittorio Veneto
Just looking at the vertical component of the velocity and the mass of the SD 1400, wrong velocity of fall is independent from mass. But ther is a limit of velocity somewhere dependent on the air resistance of the falling bomb. Where does the knowledge comes from, that a projectile moving supersoni...
- Mon Dec 13, 2010 3:14 pm
- Forum: Bismarck General Discussion
- Topic: Total number of shells fired by Bismarck and straddles
- Replies: 103
- Views: 24721
Re: Total number of shells fired by Bismarck and straddles
Bismarck, in theory, had a functioning radar ranging system capable of generating very accurate ranges and range rates and yet she never landed a single round with the potential to enter PoW's citadel. and thus the range had to be within a few hundreds yds of the range indicated on PoW's track char...