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Originally Posted by Dr.Sid
Send whatever you have  Anyway for me the arrow keys works correctly. Left moves rudder toward negative values. Right toward positive.
To get some decent bank:
Press 0 for flank speed. Wait till speed hits 30. Ignore slight bank to the right due to screw reaction. Press ']' for full rudder right. It should perform something like barrel roll.
Now this isn't realistic from many points of view. You would loose the air from balast tanks when upside down. Screw and planes would not work above the water (I don't test it now).
Are you sure you have the sim2.zip version ? |
When submerged there is NO AIR in the MBT's. You open the MBT vents and close them when you are sully submerged and the tanks are full of water.
On the 'Snap roll' as we called it it has to do with having the sail on the top of the hull and none below it. The center of rotation in all axes is the reactor compartment as that is the single most massive concentration of weight.
With that being said, when you toss the rudder over at high speed the ship rotates and the sail becomes becomes a HUGE plane surface due to a sudden change in the angle of incidence.
Now that the hull is rotating due to this asymmetrical vector, the rudder now is no longer in a horizontal plane and starts to induce a vertical vector into the ships motion. This now causes that HUGE plane called a sail to further change is angle of incidence and continue the roll which further rotates the ship. Eventually the rudder is going to become more of a STERN plane than a rudder and lift the stern causing the ship to pitch down sharply. While this is going on the boat will CONTINUE to rotate into the direction of the turn. Yes, you could in effect perform a huge sloppy barrel roll, BUT, you will exceed crush depth before you could complete the roll. There would be other 'complications' as well before you got over half way thought it, but you would crush before then.
Here is something interesting aboout the depth excursions due this handling problem 688's have:
The USS Oklahoma City crew had a shirt made once that said:
"60 down, Rods down, Still Around"
They experienced this problem in sea trials and managed to save their butts because of a GOOD throttleman and a EOOW who had initative.
We do have operating procedures for high speed ops and certain system to prevent this, but I feel it is not appropiate to discuss them in an open forum.. I will add that you are on the right track with the limiting of rudder movements.