Difference between revisions of "Coilgun"
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[http://www.coilgun.ru/ World's Coilgun Arsenal] | [http://www.coilgun.ru/ World's Coilgun Arsenal] | ||
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[http://coilgunpower.com/coilgun/single.php Coilgun Power] | [http://coilgunpower.com/coilgun/single.php Coilgun Power] |
Revision as of 22:35, 17 September 2011
Contents |
What is this?
Documentation, notes, resources, etc. about Phil's project to try and build a coilgun (aka a Gauss gun).
Background Info / Resources
Coilgun Technology @ UTexas (pdf)
Other useful discussion forums / boards
Coilgun Videos on Youtube
http://www.youtube.com/watch?v=7LjnhhtHojM
http://www.youtube.com/watch?v=GjMTffRav-I
http://www.youtube.com/watch?v=6mobpTrl7cA
Reference Material
http://info.ee.surrey.ac.uk/Workshop/advice/coils/terms.html
http://www.facstaff.bucknell.edu/mastascu/elessonshtml/LC/Induct1A.htm
http://teacher.pas.rochester.edu/phy122/Lecture_Notes/Chapter32/chapter32.html
AWG (American Wire Gauge) Chart
http://home.earthlink.net/~jimlux/hv/wheeler.htm
http://electronbunker.sasktelwebsite.net/CalcMethods3b.html
http://www.moshier.net/coildoc.html
For Love of a Gun - The tumultuous history of electromagnetic launch
University of Texas - Center for Electromechanics
Francis Bitter Magnet Laboratory
http://en.wikipedia.org/wiki/Electromagnet
http://en.wikipedia.org/wiki/Ampere's_Law
http://en.wikipedia.org/wiki/Electromagnetism
Insulated Gate Bipolar Transistor (IGBT)
Fairchild Semi SGL160N60UFD IGBT
Fairchild Semi FGPF50N33BT IGBT
Fairchild Semi FGPF50N33BT IGBT @ Future Electronics
MIT OCW: Physics II - Electricity & Magnetism
http://www.amazon.com/Inductance-Calculations-Dover-Books-Engineering/dp/0486474402/ref=pd_sim_b_1
http://www.amazon.com/Inductance-Partial-Clayton-R-Paul/dp/0470461888/ref=pd_sim_b_2
http://www.amazon.com/Students-Guide-Maxwells-Equations/dp/0521701473/ref=pd_bxgy_b_text_c
http://books.google.com/books?id=VLm_dqhZUOYC&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=zFeWdS2luE4C&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=HWrMET9_VpUC&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=zFeWdS2luE4C&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=b2f8rCngSuAC&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=31hjdifsTeQC&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=x5JHdOPHwcQC&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=Zfk2E5pkwy0C&dq=isbn%3D0763738271&source=gbs_similarbooks
http://books.google.com/books?id=2CbvXE4o5swC&dq=isbn%3D0763738271&source=gbs_similarbooks
Software
Sources for parts / materials / tools/ etc
- Red - 30 gauge
- Green - 26 gauge
- Amber - 22 gauge
Big list of suppliers from mini-lathe.com
Notes / Pictures / Documentation
09-09-2011
A batch of photos of a very (very!) primitive prototype of the physical layout. What this is driving towards is a version where the electromagnets are outside of the "barrel" and not directly in line with the projectile. The reason for doing this is so we can use a ferrous core for the magnet, which greatly, greatly increases the field strength (all other things: # of turns, wire gauge, current, etc., being equal). The hope is that the greater field strength will more than compensate for not having the field directly aligned with the barrel.
09-11-2011
Got one electromagnet wound, playing around to see if it would move a small ball bearing without using a ton of current. Turns out, at 25-30 volts, you only get 1 amp of current through this thing (resistance), but that's enough to grab the ball bearing from about an inch away and get it moving. It'll be interesting to see how it works with the two magnets, one on each side.
What I'm quickly realizing about this, is that the power switching and the timing of the magnet pulses, is going to be crucial, especially if I go with a multi-stage gun. Relays are big, clunky, and possibly too slow, so I ordered a batch of high power SCRs (Silicon Controlled Rectifier) from Newark last night. From what I've seen, SCRs are how most people are doing the switching on these things. We'll see...
Another batch of pictures of the progress:
https://plus.google.com/photos/114301088526097505896/albums/5650980399687868385
This shows the gun a little further along. The one magnet is wound and mounted now. After this picture was taken, the barrel was repositioned slightly to put the starting point of the project about an inch from the magnet.