Interesting. Thanks for posting it.
Just to be clear. A 6M RuM is a rangefinder with a 6 m. basis, correct?
Search found 13 matches
- Sun Nov 10, 2013 9:00 pm
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
- Sat Nov 09, 2013 2:30 pm
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
Re: British Fire-control and time of flight
The above was an RN test. The problem with combat reports is that the gun is also being used as an RF, through the use of spotting corrections. From von Hase Kiel and Jutland page 132: “ the Bg. Officer will report the change of range per minute calculated from the difference of the range-finder re...
- Fri Nov 08, 2013 11:29 am
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
Re: British Fire-control and time of flight
So that represents about 7500 recorded observations for each RF (two stereo, two CI) and this was just one of 4 different trials. The number of recorded observations is a moot point. The design of the test is such, that we can learn nothing of the capability of the German wartime rangefinder system...
- Thu Nov 07, 2013 1:47 pm
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
Re: British Fire-control and time of flight
See: http://www.admirals.org.uk/records/adm/ ... 86-259.pdf , P.125 (P.49). That document tells us very little, if anything, about the capabilities of the German rangefinder system during the war. Firstly, though the stereoscopic range takers at the trial are described as having two years’ experien...
- Tue Nov 05, 2013 7:43 pm
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
Re: British Fire-control and time of flight
As to the Dreyer table having problems calculating the range rate, a good deal of that was due to the too narrow based range finders in British service and the poor visibility during the battle which made it difficult to obtain reliable range readings in the first place. Regarding the narrow base o...
- Thu Oct 31, 2013 2:52 pm
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
Re: British Fire-control and time of flight
According to the Handbook on Minor Fire Control Instruments, the Dumaresq instruments in fire control positions incorporated a deflection drum to give gun deflection without having to consult a table; this automatically allowed for times of flight and rotational drift. Thank you, I did not know tha...
- Wed Oct 30, 2013 7:04 pm
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
Re: British Fire-control and time of flight
Thanks for taking the time to respond to my question. one would use the Dumaresq calculator to obtain range rate or rate of change and gun order deflection from a built in range drum. The Vickers Range clock would be fed with range estimates from range finders, enemy course and speed estimates, own ...
- Tue Oct 29, 2013 5:29 pm
- Forum: Naval Technology
- Topic: British Fire-control and time of flight
- Replies: 35
- Views: 28008
British Fire-control and time of flight
Hello I have a question that I hope someone can help me with. How did the British fire control system handle the time-of-flight of the grenade? Time of flight is probably the most important reason why gun range and clock range differ. But how did the British introduce time of flight into their syste...
- Sat Mar 17, 2012 6:06 pm
- Forum: Naval Technology
- Topic: British v German rangefinders
- Replies: 82
- Views: 71303
Re: British v German rangefinders
Hi Regarding the accuracy of german v. british rangefinders it could be interesting to compare what degre of error was allowed to pass the british and german rangefinder courses. According to: Naval Staff Intelligence Department, German Gunnery Information Derived from the Interirogation of Prisoner...
- Sat Jan 14, 2012 12:54 pm
- Forum: Naval Technology
- Topic: German rangefinders WWI
- Replies: 26
- Views: 78475
Re: German rangefinders WWI
Thanks Nillson and Wahl, very helpful references. Generally I think it is less complicated to establish the number and type of rangefinders on the later ships (Bayern class, Hindenburg) than the earlier classes, because they didn´t change so much doing the war. In the coming week I will order some g...
- Wed Jan 11, 2012 11:13 pm
- Forum: Naval Technology
- Topic: German rangefinders WWI
- Replies: 26
- Views: 78475
Re: German rangefinders WWI
Hi Delcyros Thanks for your answer. I had not thought of that. I am danish and my german could be better so it is possible that I have misunderstod something. Turret RF of 28cm turrets in ww1 were typically 3m devices (possible exceptions are the battlecruisers), the GCT devices were 3m for these sh...
- Wed Jan 11, 2012 10:58 pm
- Forum: Naval Technology
- Topic: German rangefinders WWI
- Replies: 26
- Views: 78475
Re: German rangefinders WWI
Thanks for answering Buron Angel. I agree that at least the Helgoland class the recieved larger rangefinders during the war. But from the photos I would say that even the new ones wouldn´t have a base-length of more than 4 m. Do you know of any sources that list which ships recieved longer rangefind...
- Tue Jan 10, 2012 11:07 pm
- Forum: Naval Technology
- Topic: German rangefinders WWI
- Replies: 26
- Views: 78475
German rangefinders WWI
Hi I have been doing some research on german naval artillery and fire control from 1906-1918. Since this is a subject with very little english littearture, I hope you would like to discuss some dissimilarities I have found with me, concerning german rangefinders, there size (base-length) and numbers...