I want to build a scale working FIDO torpedo. Less the explosive warhead of course
To simplify the torp I just want rudder control, the unit will just run at constant depth. During search mode the rudder is set to do a circular search pattern. Once the seeker unit detects a sound source I want the rudder to straighten driving the torp to the sound source. If the unit misses it will the again resume it's circular search until it again re-acquires it's target.
I already know how to build the torpedo.
www.pt-boat.com
What I'm having bit of a problem on how to go about building the acoustic seeker unit. Anybody Know how to ?

To simplify the torp I just want rudder control, the unit will just run at constant depth. During search mode the rudder is set to do a circular search pattern. Once the seeker unit detects a sound source I want the rudder to straighten driving the torp to the sound source. If the unit misses it will the again resume it's circular search until it again re-acquires it's target.
I already know how to build the torpedo.
www.pt-boat.com
What I'm having bit of a problem on how to go about building the acoustic seeker unit. Anybody Know how to ?