U-Boot “Sharcon” - Electronic.hu

2. Icon Explanation
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The symbol with the exclamation mark indicates important instructions in this operating
manual which absolutely have to be observed.
This symbol gives you tips and notes on the unit operation.
3. How the SHARCON works
When at rest the model floats on the surface in a stable attitude, with the top surface of the hull roughly
at water level.
Buoyancy is just sufficient to keep the model afloat. When run at low speed, the boat stays on the
surface in this attitude.
If motor speed is raised, the model's forward speed increases, and the boat dives automatically. Slots
in the hull allow water to flow in and out freely, so no pump is required.
Water pressure increases with depth and speed until it is sufficient to rotate the pivoting radar screen
towards the rear. This action activates the automatic diving system.
The movement of the radar screen is transferred mechanically to the forward depth control vanes. The
vanes are moved to a positive angle of attack, which causes the boat to rise to the surface.
As soon as the radar screen is out of the water, the forward vanes return to their former position, and
the model can be dived again. The duration of each dive varies according to the model's speed.
The boat can be controlled using either two or three channels. With two channels the model's diving
characteristics depend on its speed and the automatic diving system. The optional function of
controllable depth vanes opens up new possibilities to the more experienced operator:
The automatic diving system can be over-ridden while the model is under water, i.e. you can control
diving depth directly.
If the depth vanes are pulled back, it becomes possible to run the boat at high speed on the surface,
without the model diving.