Technology and Operations
This forum is for discussing technological & operational matters pertaining to U-boats.
Re: Torpedo Launching
Posted by:
TomW
()
Date: October 31, 2003 03:40AM
Ken:
I'll try to do some calcs on pressure buildup in the boat due to torpedo firing. However, can you (or someone) fill in a couple technical details for me:
#1: Length and diameter of torpedo tube.
#2: Pressure of air used to eject torpedo.
I will assume that torpedo eject air came from a pressure regulating valve set for a specific outlet pressure (e.g. 200 psi) and that the final post-eject air pressure in the tube is the regulator setting.
Also, correct me if I'm wrong on the following firing sequence:
#1: Load torpedo and piston in tube; shut Breech Door.
#2: Open equalizing valve, flood tube from sea to equalize pressure across muzzle door. (so it can be opened)
#3: Open muzzle door and bow shutters.
#4: Open Firing Valve; pressurize tube w/air behind piston to eject torpedo. Piston stops near muzzle of tube.
#5: Open Tube vent valve; vent eject air back into boat so sea
pressure refloods the tube pushing piston back to breech door.
#6: Shut Muzzle Door and bow shutters
#7: Drain tube inboard to drain tank.
#8: Open Breech Door; extract Piston.
Tube now ready to reload.
Thanx, TomW
I'll try to do some calcs on pressure buildup in the boat due to torpedo firing. However, can you (or someone) fill in a couple technical details for me:
#1: Length and diameter of torpedo tube.
#2: Pressure of air used to eject torpedo.
I will assume that torpedo eject air came from a pressure regulating valve set for a specific outlet pressure (e.g. 200 psi) and that the final post-eject air pressure in the tube is the regulator setting.
Also, correct me if I'm wrong on the following firing sequence:
#1: Load torpedo and piston in tube; shut Breech Door.
#2: Open equalizing valve, flood tube from sea to equalize pressure across muzzle door. (so it can be opened)
#3: Open muzzle door and bow shutters.
#4: Open Firing Valve; pressurize tube w/air behind piston to eject torpedo. Piston stops near muzzle of tube.
#5: Open Tube vent valve; vent eject air back into boat so sea
pressure refloods the tube pushing piston back to breech door.
#6: Shut Muzzle Door and bow shutters
#7: Drain tube inboard to drain tank.
#8: Open Breech Door; extract Piston.
Tube now ready to reload.
Thanx, TomW
