Auto TDC consistently misses (torps arrive late always)

[tommyk]

Originally Posted by Razman23

That is what I thought as well but as you can see by the images posted on this thread, the fish and line do not match. I even checked it on my pc to see what it does and its the same way.

I believe there is definatly something wrong with TDC and/or torpedo settings in SH4 but I dont know what it is... mk14 low speed seems to work best for me...

[akdavis]

Originally Posted by Razman23

That is what I thought as well but as you can see by the images posted on this thread, the fish and line do not match. I even checked it on my pc to see what it does and its the same way.

The light green line is the gyro angle (and expected torpedo path with no spread) generated by the TDC. The dark green line is the spread offset applied to the generated gyro angle (if they merge, spread is 0 deg.) and will be the expected path of the current torpedo at launch.

The generated gyro angle is continuously updated by the TDC. Unless you turn the TDC off the second the torpedo is launched, the gyro angle line will not match the track of a torpedo that has already left the tube as it is updating for the next shot.

[Razman23]

Originally Posted by akdavis

The light green line is the gyro angle (and expected torpedo path with no spread) generated by the TDC. The dark green line is the spread offset applied to the generated gyro angle (if they merge, spread is 0 deg.) and will be the expected path of the current torpedo at launch.

The generated gyro angle is continuously updated by the TDC. Unless you turn the TDC off the second the torpedo is launched, the gyro angle line will not match the track of a torpedo that has already left the tube as it is updating for the next shot.

So shouldnt the light green line actually line up on the white X then?

It would make sense that the light green line hit the X and confirm you have a good firing solution. Dontcha think?

Unless the 'bug' causes the line not to match up.

[akdavis]

Originally Posted by Razman23

So shouldnt the light green line actually line up on the white X then?

It would make sense that the light green line hit the X and confirm you have a good firing solution. Dontcha think?

Unless the 'bug' causes the line not to match up.

No, the white X and line is the TDC's current calculation of the target's position and course. Assuming you are aiming at the center of the ship, then that is the X. If you have aimed at the bow, then that is the X. Where the white X is now, is not where it will be when the torpedo arrives

If the actual ship's location and direction of travel matches up with the TDC marker, then the TDC is giving you a good solution. The way to know if you have bad solution is if the TDC target does not reflect your actual target.

The only thing that determines whether or not you have a good TDC solution (bugs aside) is if the actual target is doing what the TDC calculates based on your input. Your input determines the accuracy of the solution. The TDC is not a super-computer able to judge the validity of your input. If you want a computer that tells you if you have good solution or not, then turn map contact updates on and see if the TDC marker and ship marker match-up over time.

[jmjohnson36]

OK mates...the delay in torps firing is normal....not like other games where things AUTOMATICALLY happen... Crew experience, command level, and type of torp cause a delay...not much,,but happens....also Mates on real diesels a torp firing takes about 3 to 5 seconds.

LTCMDR (RET)
ROYAL NAVY

[-Pv-]

I have had every 1st torpedo hit dead center (the aiming point) when the last thing I did before firing was update the status of the TDC (assuming I had a correct attack profile and I had the door open.)

In the last kasman23 pic, if the dark line was ahead of the target and 90 degrees and your sub was also slightly ahead of the target when you fired, then you would have a good solution. The black line shows where your torps would go if you fired NOW. Another way to validate your firing solution on the tactical map is if the torps arrived where the black line WAS when you fired. Those who send pics of their torps missing only demonstrate to us the miss. To see if the torp was fired correctly, we need a pic taken when the fire button was pressed.

Practice making the torps arrive on the black line when the situation is close to ideal and you'll get a hit every time (except for torp failures, incorrect depth, target course and speed changes and weather effects.) Keep updating the TDC. It's not a sensor-driven device like a Maveric missile. It needs data from YOU! Not just once. Depending on the length of attack and any course/speed changes you and the target make, or scope washing out, you may need to update it several times, and ALWAYS just before you fire.
-Pv-

[NefariousKoel]

Good advice -Pv- and I update just before each shot.

Neal stated that the Devs acknowledged there is an issue with this TDC insanity. I hope it's fixed in the next update.

[Chrall]

I don't if this help, but i've found out that if you sign a key to:
[Cmd312]
Name=Toggle_open_close_torpedo_tube
Ctxt=1
you can open torpedo tube 1 and still use "Q" to open another one. Note that this command only works for tube 1, but atleast you can have two tubes open at the same time.

[tommyk]

> I have had every 1st torpedo hit dead center (the aiming point) when the last thing I did before firing was update the status of the TDC (assuming I had a correct attack profile and I had the door open.)

pv, I envy you sending every single torpedo dead center but we talked about AUTO_ TDC...

Threat title: Auto TDC consistently misses (torps arrive late always)

Of course you can manualy correct a misleading TDC for a wrong torpedo speed...

And no, it is not a question of opening the doors. they are open and with fast mk14 the AUTO TDC in SH4 calculates (wrong) until the very last fraction of a second until the torp leaves the tupe...

[cueceleches]

I had a nice experience yesterday with auto TDC.
I was sailing out of Hiroshima harbour (spy mission) and got sight of an escort carrier and two destroyers...the three of them seating still in the middle of the channel!

I postioned my sub at 1000m, torp depth, speed to slow, etc...and followed the green triangle inicator on the periscope compass that inicates a good TDC solution. It indicated a 0º bearing. Just in front of my boat. So I decided not to add spread angle and left it at 0. Results? Two consecutive eels dead center on the carrier.

Indeed, torp speeds must be porked since I only get proper kills while the target is standing still on the water. Need badly a patch!

[tommyk]

I believe for now it seems mk10 or mk14 (in slow configuration) works best in auto TDC...

[elanaiba]

[tommyk]

Hahaha, GREAT! Thank you!

[PeriscopeDepth]

PD

[vodkavera]

Originally Posted by elanaiba

Where did you get that from?

/VV