by admin
After some experimenting at school we made a successful working coilgun with speeds up to 85 km/h, now this project is to make it more compact so you will be able to carry it around. Also more power and more speed!
The nozzle velocity is still very slow compared to a paintball marker or any other rifle, but the weight of the bullet makes sure it will still give quite a punch. (A paintball @ 300fps still only packs 15Joule)
It’s still a hobby project and not perfected in any other way than the looks:)
specs:
Fully semi-automatic, up to 14 shots. @quadstrike
Agree in the video above. But I’m referencing from his comment ~3 months ago. He said the projectiles were traveling 110.2 fps [or ~30.6 m/s]
So, it seems 20+ stages should be able to accelerate it to propellant powered rifle velocities. And considering his projectiles are about 4 times heavier than as .300mag rifle round :-S
Curious what velocity increase, if any, a projectile four time lighter would be.
I have an idea for for your myth busting buddy… a gas powered rifle. USe CO2 (liquidfied) but fed into a discharge chamber that will drive a projectile when released… but instead of relying on room temperature to expand the gas…preheat the compressed CO2 with inductive heating coils. The energy stored could – I think – easily surpass the kinetic energy discharged by a standard propellant of a normal bullet.
Bust it or Confirm it
Do you have the current timed or calcualted to cut off when the projectiles center of mass reaches/passes the at or near the center point of the magnetic coil?
If your stage is only the length of the projectile, then you could put in many series of coil stages. If you’re using one stage and reaching 100fps. Then only 20 stages – it seems – would be needeed to achieve a normal rifle velocity. Though, as the projectile accelerates, I think you’d have to tweak timing circuits.
...07.01.10
CES gets underwayConnected devices. 3D TV. And gadgets. Lots of gadgets. The 2010 International Consumer Electronics Show -- the world's largest showcase of electronic goods and gadets -- opens today in Las Vegas. What's hot this year? The question is really "what's not?" Because the industry seems to be moving in a million directions at once. If the press preview "CES Unveiled" is any indication, then we can look forward to a show full of connected devices: cell phones, set-top media boxes, home entertainment systems, televisions, computers. Everything seems to communicate with everything else to share every kind of content imaginable. It's far from past predictions of convergence -- the idea that everything would come together in your television. We've seen cell phones that communicate and connect with home security systems, and televisions that let you skype with friends. Logitech showed a nifty web cam that makes the latter enjoyable on your new flat-screen with 720 lines of resolution. In a web cam. D-Link, Seagate and a dozen other companies are showing set-top boxes capable of either storing your multimedia files, accessing them over your network, or accessing and playing back everything from Netflix movies to Hulu. One of the biggest wows however was for the 3D TVs. We saw one from Sensio, and a gorgeous 70-inch giant from Mitsubishi that might finally put 3D in your living room -- if the content becomes available (we can't wait to hear that FSD has 3-D cameras for Wings games, but we're not holding our breath, either). Stay tuned for more.
Source: The Detroit News (blog)
www.homesecuritystore.com This is a Home Security Device called the WSE201 - Wireless Outdoor Color Nightvision Security Camera System. Want to ...
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CES gets underway The Detroit News (blog) - Jan 07, 2010
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