Electronics > Projects, Designs, and Technical Stuff
High force solenoid
i_am_fubar:
The brain fart that lead me to this thought was that it mitigates the need for mechanical parts other than a single linear member. As has been mentioned, this isn't going to be easy and while possible, will be very, very far from efficient.
The thread has given me some nice thoughts for diaphragms, inductive motors and repulsion as well as some pointers to magnet physics that I've not previously considered. So brain fart success.
With respect to compressors, air tanks and spring driven racks. These are all well understood principles to me, which makes them kinda boring. I'll use them when I need to, but for Hits & Giggles, naaa :-+
joeqsmith:
You could skip the solenoid and just dump the cap right into a section of copper wire.
Berni:
--- Quote from: joeqsmith on January 15, 2020, 12:16:46 pm ---You could skip the solenoid and just dump the cap right into a section of copper wire.
--- End quote ---
Yep that also has a name of ETG (ElectroThermal Gun). To make it easier to reset and more effective the copper can be replaced by two contacts and a little bit of water (While using a few kilovolts cap bank). The water serves as a easily conductive medium to establish the arc, also later on flashes into steam to provide even more propulsive gas than just expanding hot air. This method scales better than coilguns into higher powers(tens of kJ input energy) tho is still very far from the efficiency of an electric motor.
This method is also used in oil exploration to generate a repeating explosion under the ship as a way of generating loud sound waves that penetrate the sea bottom and echo back with valuable info what is down there.
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