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Automatic Piston Hybrid Cannon Design

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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Re: Automatic Piston Hybrid Cannon Design

Unread postAuthor: jackssmirkingrevenge » Mon Sep 07, 2015 8:05 pm

lordBenio wrote:I have been mauling over for sometime now.


Mulling over I hope ;)

My stock response to these designs is, have you considered pre-mixed cartridges?
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Re: Automatic Piston Hybrid Cannon Design

Unread postAuthor: Ragnarok » Mon Sep 07, 2015 8:46 pm

lordBenio wrote:Dry cell electrolysis is dependent the amount of amps you put in and the number of plates used. So you can get high outputs of hydrogen.

Well, yes - but it's also dependent on not breaking the laws of thermodynamics. :D

It's like electric cars. Dependent on the make and model, a tank of petrol will last a few hundred miles - but using mains power to charge an electric car to go that far (despite electric motors being more than twice as efficient as combustion engines) will take about a day.

Combustion both takes and releases massive amounts of energy, and if you want to get that out of a power cable, it's like trying to fill a bath one cup at a time.

If you need large quantities of hydrogen, gas cylinders are almost certainly more convenient (and quite possibly cheaper, after you see your electric bill).
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Does that thing kinda look like a big cat to you?
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Re: Automatic Piston Hybrid Cannon Design

Unread postAuthor: lordBenio » Thu Jan 14, 2016 5:18 pm

Has anyone made a liquid fueled hybrid. If I were to use a liquid fuel that should get me fast rates of fire and potentially higher velocities.
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Re: Automatic Piston Hybrid Cannon Design

Unread postAuthor: matti » Fri Jan 15, 2016 11:17 am

lordBenio wrote:Has anyone made a liquid fueled hybrid. If I were to use a liquid fuel that should get me fast rates of fire and potentially higher velocities.


Propane is kind of liquid.. :D Anyway why not use it ? It's proven quite good and works with high mixes too :lol:
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Re: Automatic Piston Hybrid Cannon Design

Unread postAuthor: mobile chernobyl » Fri Jan 15, 2016 6:32 pm

What you are describing is precisely the conclusion Utron came to - and if you view the Defense document below - you can see their solution!

(It will automatically start downloading a pdf file when you click it - it's worth a thorough read through!)

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA462130
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