Sequential Operation Steps in Aerial Torpedo Bombing
- A release button is switched on in the cockpit.
- Cartridge is ignited to cut a loading wire band. Torpedo is released and wire is falling freely.
- The torpedo is falling and the safety bolt is pulled out. It starts gyroscopes of both the vertical rudder controller and the anti-rolling controller.
- Vertical rudders are kept in straight direction.
- Horizontal rudders (or elevators) are locked in uppermost position to prepare the water entry.
- Roll rudders start steering by the anti-rolling controller.
- ---Water Entry---
- Hard impact to the water surface breaks off wooden air wing covers of side roll rudders and tail aerodynamic stabilizer plates or box.
- Doubly rotate screws are unlocked at propel block.
- Propel engine starts cool idling while running. (Engine starts rotating with high-pressure air only.)
- Brakes on horizontal rudders (or elevators) are released. Depth meter starts working.
- Water pressure after the entry downs a plate to start firing combustion chamber of the engine.
- Propel wet-heater engine starts hot running by burning fuel air gas, mixed with sprayed water.
- Safety lock in the warhead is released while running.
- High explosive explodes on the hit of the target.
Read more about this topic: Type 91 Torpedo
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