[Working model]

A slighty more realistc and improved version of my previous model.

The Type 91 was an aerial torpedo of the Imperial Japanese Navy which was designed to be launched from an aircraft.

| History |

The Type 91 aerial torpedo had two unique characteristics:

Wooden attachments on the tail fins, that acted as aerodynamic stabilizers, which were shed upon water entry.
An angular acceleration control system (PID controller) to control rolling movements, which was very advanced for its time.
The No.7 was use in 1944

| Tacti ics and uses |

Slow torpedo tactic :

Released the torpedo with the airspeed not exceeding 130 knots (or 240 km/h, 150 mile/h) and at an altitude no higher than 30 m (98 ft), with slower airspeeds resulting in better precision.

Fast torpedo-bombing tactic :

As for a high-speed torpedo bombing run in 300 knots (or 556 km/h, 345 mile/h), the maximum altitude for release was limited at 300 – 350 m (984 - 1,148 ft). The strength of contra-rotating propeller limited launch height. A torpedo, tested at 100 m in very high speed from P1Y land-based attacker Ginga at Yokosuka arsenal, veered upon water entry because of a crack in a screw blade. The minimum release height was also limited to 40 m (131 ft) in a high-speed run. If it were released lower than 30 m (98 ft) in a high-speed run, the torpedo might skip on the water's surface.

You need to setup the engine activation at the same group of the released. Like in my P1Y1.

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The torpedo is fully capable of sinking small to medium sized ships (USS Tiny to Destroyer).

Hope you like it.