Difference between revisions of "Combustion process"

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(Removed the reference to DR's flame front accelerator since it doesn't work. Various other changes.)
 
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The '''combustion process''' is an exothermic chemical reaction of a chemical with oxygen. In the context of [[combustion cannon]]s, this refers to the reaction of a [[fuel]], usually a hydrocarbon (usually propane) with atmospheric oxygen, producing carbon dioxide, water, and heat. The heat produces sufficient pressure to propel the projectile out the barrel.
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The '''combustion process''' is an exothermic chemical reaction of a fuel with an oxidizer. In the context of [[combustion cannon]]s and [[hybrid]]s, this refers to the reaction of a hydrocarbon  fuel (usually [[propane]]) with atmospheric oxygen (the oxidizer), producing carbon dioxide, water, and heat. The heat produces [[pressure]] that propels the projectile out the [[barrel]].
 
 
This burning takes place mostly on the "flame front", a stereotypically shell-shaped region that spreads outwards from the [[igniton scource]]. Techniques used by some to encourage the rapid spread of this flame front <i>(to decrease the time it takes to combust all the fuel-air mixture, allowing the gases to reach peak pressure quickly, which has been shown to improve performance, especial on short-barrel launchers.)</i> Include:
 
* multiple ignition points, allowing multiple flame fronts; usually accomplished via a [[spark strip]].
 
* inducing turbulence into the flow containing the flame front.
 
 
 
The latter is not a well established way of doing things, but the latest attempt by DR shows promise; an adaptation of the [[jet igniton]] idea, in which an inherently turbulent spire of flame is squirted into the main chamber through a small orifice.  
 
  
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This burning takes place in a "flame front", typically a spherical or domed shaped region that spreads outwards from the [[ignition source]]. It is generally believed that the faster the flame front moves the better a combustion spudgun will perform. Techniques used by some to encourage the rapid spread of this flame front include:
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* Multiple ignition points to produce multiple flame fronts. This is usually accomplished via multiple [[spark gap]]s, or perhaps by use of a [[spark strip]].
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* Inducing turbulence in the gases through which the flame front is moving. This is usually accomplished via a [[chamber fan]].
  
 
Tools and Information on the combustion process can be found at these links:
 
Tools and Information on the combustion process can be found at these links:

Latest revision as of 01:57, 2 June 2008

The combustion process is an exothermic chemical reaction of a fuel with an oxidizer. In the context of combustion cannons and hybrids, this refers to the reaction of a hydrocarbon fuel (usually propane) with atmospheric oxygen (the oxidizer), producing carbon dioxide, water, and heat. The heat produces pressure that propels the projectile out the barrel.

This burning takes place in a "flame front", typically a spherical or domed shaped region that spreads outwards from the ignition source. It is generally believed that the faster the flame front moves the better a combustion spudgun will perform. Techniques used by some to encourage the rapid spread of this flame front include:

  • Multiple ignition points to produce multiple flame fronts. This is usually accomplished via multiple spark gaps, or perhaps by use of a spark strip.
  • Inducing turbulence in the gases through which the flame front is moving. This is usually accomplished via a chamber fan.

Tools and Information on the combustion process can be found at these links:

Helpful Tools

Wikipedia Combustion article


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