Quote:
Originally Posted by twgin
Magic1111 thanks for the tip about Hsie's option selector. I think reordering the mods I have installed brought torpedo performance back to a more realistic failure rate. Again, I have no explanation for this other than a case of dueling mods; I'll stick with this for a bit and see if I can rack up a few Iron Crosses !
Makman, thank you for the kind words. So I understand that my sequence should be set up the dials, turn on the TDC, and only then lock the scope/uzo on the target. I understand also that in manual targeting any course/speed changes by either my sub or the target will screw up the firing solution.
A few further questions; my technique has been to (all in manual targeting) use the plotting tools to set up a 90 degree attack from a predetermined position. This allows me to predict relative bearing, AOB, range and so on and reduces my problems to determining target speed and getting my sub to the predetermined position at about the same time the target reaches my selected value for relative bearing. What I have been doing is locking on when the target is at a 20 degree relative bearing to the sub (or 340) and then firing when the target had moved to between 10 and 0 degree relative bearing (to minimize gyro angle).
But if the range is in fact not updating in the TDC my predetermined solution at 20 deg relative bearing is wrong at the firing point of 10 deg relative bearing (not really too much range change at these angles...). Is this the case or is the TDC updating the range "inside the box" and just not updating the dial ? Does range even affect gyro angle ?
I am reminded of every sub movie ever made where the captain goes up scope, takes one final set of range/bearings, yells "mark !" and then "fire tube 1!".
So I guess the question is, in manual targeting is the TDC only good for an instantaneous solution (put in the numbers, green light on, lock scope, fire) or will it hold on to a solution over (a short span of) time.
One final question, kind of related, in choppy seas with the scope set low, target lock will be lost as waves lap over the scope. Is this a problem, i.e when scope lock goes away does the TDC grind to a halt or produce an erroneous gyro angle ? Or is it that scope lock just gives the TDC a starting relative bearing value and it will output a continuous good gyro angle as long as courses/speeds remain the same ?
Thanks !
Terry
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hi Terry,
no ,your speed is not effecting anything at firing solution ...only your course must be constant . look at TDC dials...there are four of them . the Bearing and the AoB dials are determine the angle between both courses (yours and target) thats why you or target must not change course . the third dial is target's Speed (thats why target must not change speed) and the last one is the Range's dial which must be adjusted last and yes ,one moment before firing. (so,as you can see, there is nowhere your speed involved)
when you are preparing the dials (at very first stage) you must set a range which must be as accurate as possible (no need at this stage to be very accurate...just a good aproximation is needed.you will fining the range at several times as target is getting closer) in order to get an 'idea' of the gyroangle .as you fining the range...you fining the gyroangle too !
of course you must have done a good 'job' on determing target's course and speed (especially target's speed is the most critical value ! and if your shot is from less than 1 km i can tell you that ONLY a good estimation of target's speed is needed and just an aproximation to its course and you will get him down. )
yes , the TDC is for 'constant' shots thats why you need this 'one moment before firing' range value and yes range is
always important for the firing solution and is important also for straight shots (gyro=0) but ,at this case, has less effection to solution thats why is mostly used.