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Registered Member #4266
Joined: Fri Dec 16 2011, 03:15AM
Location:
Posts: 874
Why dont you test it in a sim, question but two coils on the same axis with at lest 90% coulping would make one coil with lower resistance, but the text books really dont teach you that, ie the book say half the inducane but its moe 0.05% the inductance but you get half the resisance, which if you didnt flood the projectile will equal more abilty to acceralate.
Registered Member #54278
Joined: Sat Jan 17 2015, 04:42AM
Location: Amite, La.
Posts: 367
The textbooks can really mislead you when they don't specify: "this is NOT the exact answer". Especially when the true answer is not that much, if at all, more difficult to derive. A couple of which we can relate to are the true, or exact, B-fields along the central axis of a solenoid, and the exceptions of the rules of total inductance of series and parallel inductors--BOTH together when coilguns are involved.
I HAVE NEVER USED A SIMULATOR...would love to start...any suggestions?
When software such as DEBUG, Quick-Basic, GX-Graphics, faded out, it crippled me. I Loved creating computer-generated holograms, rotating anaglyphs, etc. In fact, I was making a living with it. It was a rough time when Windows took over and these things eventually totally crashed.
That held me back for about about 15 years!!!. Then, I discovered, quite recently, a programming language called "Processing". With it, I have recently plotted, on a hi-res computer screen the radial and axial B-Field everywhere inside any general solenoid at any cross sectional area--I was looking for some king of maxima forming in the interior of the coil, but could find none. All maxima went to the perimeter of the inside of the coil, independent of the number of turns, layers, current, etc. With thick layered coils the maxima would 'seep' inside some of the innermost coil volume. I was searching for a specific field in order to construct special coilgun projectiles that were most efficiently "latched" or 'bitten' into. The program was solely based on the Biot-Savart law to ensure accuracy (no elliptical integrals yet). I used the colors of the spectrum. I always like to use 24-bit continuous color transition which takes advantage of the cone-receptor resolving limit of the eye of 8-bits (256 shades) per primary color--that's a total of 2^24 or 16,777,216 colors! Here, it beautifully indicated field strength: RED~strongest BLUE~weakest. When I needed a really accurate field due to much wire, the program could take days to run, but the resulting image was beautiful! Even though the coil interior was pretty much blue- and cyan-basd with the 'rest' of the rainbow hugging the coil wall.
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Parallel coil-layers?