How did I miss?
 

Missed again... :damn:

I'm trying out a new manual targetting tactic in a Porpoise class. Fairly simple, just using the TDC only to find a solution.

I'm using the 1.5 vanilla install.

I'm sitting still in firing position at 1000m (I have metric turned on) and I have already timed the target at a perfect 7.2 kts. I've sent the following info to the TDC:

1) Speed 7kts
2) AoB 90°S (target is approaching from the left)
3) Distance 1000

I have map updates on and I know all of the information is perfect... now I open tube 1 and wait.

When the scope is filled with a target and it looks like a perfect 90°S AoB, I click the send info button (and say "Mark" in my head). Fire1, Open2, Fire2, Open3, Fire3.
I goto external view and the stupid fish are clearly on track to miss astern??? :damn:

Now in this scnario I'm deliberatly not putting my sub on a 90° beam to the target true course; but I'm not at an extreme gyro angle either, maybe like 110-120°. The fish should swim out and make a gentle 10-15° left turn on to the solution track, but the stupid things are turning too far and missing astern!

I know I have the right distances and I've sent the data to the TDC as the target enters the 90°AoB view at 1000m. Is there some sort of glitch or something that I don't know about? ...related perhaps to the TDC not using the right torpedo speed or maybe having metric turned on?


Update: if you read thru the thread you'll find out that the answer is: You have to click the send data button twice!

There's your problem! :know:

/agree

Be sure all the tubes are open before fireing. You made it sound as if you're opening the tube and fireing as the ship is passing along the fireing point of your scope. The slight time delay between the outer doors opening and the tube fireing can cause misses astern:yep:

Be sure the outer doors are open befor you fire.

If you had the tubes flooded and open, I wouldn't know what happened.

Been trying similar things with the IX type (perfect setup with known range, firing point, AoB and target speed) where in fact it should be possible to do everthing from the attack map. Basically a "shoot trap" where you just wait for the ship to pass a specific trigger point.

Still missed.

No they were open... I've been playin long enough to know the basics.

I guess I could've said: Open2, Wait 3 Secs, Fire2

See I thought there had to be a problem with the equipment!

Man that's aggravating, and unfortunately, exactly what I suspected. :nope: So what did they screw up that gets fixed in a mod (as opposed to what should've been fixed already in a patch!)

If you don't have the PK on, you sometimes have to send some info twice, as it seems the TDC is programmed to update itself 'on the next tick', which never comes. You can see the gyro angles changing on one particular data entry when you send it a second time. With the PK running, it's not an issue.

if you're missing astern, there's the chance that you were spotted and the ship's speed changed. (sounds like you're running w/ the scope up for a long period of time...)

another idea: have you looked at the attack map to make sure your firing solutions look reasonable?

It was sent (clicked) several times and, as I said, I validated the PK dials were updated and reflected exactly what I said they reflected. I will double-check that though and try double-triple-sending my final bearing "mark" before firing.

Well, you're new here, so welcome aboard...

I did very specifically say that I am only using the TDC of the PK to get a fixed firing solution. The attack map shows nothing if the PK is not engaged. BTW, did I mention the fleetboat attack map is a travesty in SH4 compared to the gadgets you get on the same map, in the same game, when using a uboat?

...and no, the target didn't notice I was there. I mentioned I had map updates on and the solution was correct. The target never changed course.

I've had no problems with basic Fast-90 attacks using a Type IX. On the other hand, I haven't tested an Adv Fast-90 (sub not on a 90° beam to target TC) which would be more representative of what I'm trying to do in this fleetboat example. :hmm:

PK should not be on. If it is, your 90 degree AOB will drift ... and be out of whack when the target is finally at 90 degrees and you fire.

If you had PK off ... well, then I gotta try it out myself and see if the same thing happens.

Absolutely! :up: Don't know why, but yes, click that sucker (TDC input button) at least twice, you will see a change on the PK between the first and the second click. Heck, I'll usually just click it three, sometimes four times just to be sure. I really do wonder what the difference is between one and two clicks. Anyone know if there is a signifigance, or is this just a bug kinda thing ? In fact, I'm gonna post a thread on this issue to see if anyone knows.

No... PK wasn't on.

I'm gonna try a triple-click tonight though. :hmm: