Discharge methods

Question 1

What are the generic requirements of a torpedo discharge system?

Answer 1

• safe and secure discharge
• Safe and secure storage
• Monitoring
• Sending presets
• Power to the weapon

Question 2

what advantages does magazine torpedo launch system have over ship torpedo weapon system?

Answer 2

• content inside the superstructure (protected from elements)
• No external movement of weapons
• Can be handled internally (in greater than a sea state 4)
• Stowed conveniently for helicopter access

Question 3

what are the components of FIAM?

Answer 3

• suspension bands
• Umbilicals
• Arming wire
• Parachute pack
• nosecap
• salt water inlet covers

Question 4

what additional requirements does an underwater discharge system have inclusive to the generic requirements listed previously?

Answer 4

As quiet as possible
Bubble free
Able to be used at any depth without affecting performance

Question 5

explain with a basic diagram, the key components and operation of a water ram discharge

Answer 5

1. firing air pushes air ram back.
2. Water ram pushes water through the flap valve.
3. follow-up pills more water in so there is no vacuum.
4. Water entering the tube is directed onto the rear end of the torpedo acting as a water operated piston

Question 6

what are the key differences and advantages with the discharge system employed on the astute class SSN?

Answer 6

Air turbine pump versus water ram discharge
- low pressure air is contained within the hull
- System can be used at any depth
- two large to have any more than one per side side
- ATP is quieter than the distinctive ram noise
- The slider versus the flap removes a distinctive transient