Quote:
|
Originally Posted by Lanzfeld
I guess the couple of hours represents the pumping out of water?
|
I just psuedo timed it. Its about 1 hour.
What make testing this difficult is that a 7C and a 9C submarine behave differently.
For the VIIC heres what i noticed:
At "ahead slow" (100RPMS, aka silent speed), your positive bouancy is such that you do not have enough forward motion to go deeper then 10 meters. Its almost like your being held back by surface tension. At ahead 1/3rd, this is not a problem. Goes down like normal.
The positive boyancy is such that at "ahead slow" (100 RPMS), a type 7c doesnt maintain depth. It slowly draws upwards. In my mind a game breaker, however the saving grace is diving at or a bit past 220 meters.
Once you dive to 220 meters, the boat seems trimmed at pefect neutral boyancy. Going back up to periscope depth, the boat went to 14 meters. Exactly what i specfied in the cfg file. Stopping the engines, it didnt broach the surface. It just stayed put hovering.
About 1 hour in the surface and the boat was back to full positive boyancy.
For the IXC
The behavior is a bit different and im guessing what im seeing is the results of having a greater displacement.
At 100 RPMS, when ordered to dive, an IXC will also hang at 10 meters, however it eventualy push's itself down past that, where as a type 7 didnt in my testing.
At 100 RPMS, an IXC could maintain depth without any upward rise without a "trim dive".
After doing a "trim dive", an IXC still kept its slighly positive rise. Periscope depth ended at 13 meters even though i had specified 14 in the CFG file.
Theres one last behavor i need to test in this regard and it is this:
Normally with the GWX model by itself, if you ordered a depth of 15 meters at 1/3rd, but later on you wanted to raise your depth to say 13-14 meters, all you had to do, was lower your RPMS to have less forward motion (IE go from 1/3rd to ahead slow) and the boat would rise by a meter or two. If an IX has maintained some semblance of neutral boyancy, then it should maintain the same periscope depth regardless of forward motion . This is what i need to go back and test after diving to 220-230 meters.
I'll upload a new test file in a couple mins for othes to try, and then i gotta shut this puppy down and get my ass to work before im late.
EDIT:
Test version that has the 7C and 9C.
http://www.ducimus.net/sh3/release/S...sics_TEST_b.7z