Difference between revisions of "Propane"
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| − | [[Image:Propane.gif|right|thumb|300px|The propane molecule]] | + | [[Image:Propane.gif|right|thumb|300px|The propane molecule]]'''Propane''' is probably the most common fuel used by builders of higher-end combustion launchers - and with good reason too. It is powerful, easily [[fuel meter|metered]], clean burning, widely available and inexpensive. |
| − | Propane is | + | |
| + | Propane can be injected the same way an [[aerosol]] fuel would, but it is common to devise a method to carefully control the amount metered into the chamber; often a conventional [[fuel meter]] or large syringe is used, although using the pre-mixed fuel mixture from an unlit propane torch is convenient for fuelling very small launchers. | ||
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| + | It is important that the fuel/air mixture be near 4.2% by volume, because you lose power if your fuel/air mix is [http://www.burntlatke.com/lpmapprussets.html wrong]. | ||
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| + | Propane leaves no soot when burned, so it does not require one to clean their chamber frequently, and leaves practically no offensive odor. | ||
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| + | Propane is sold in bulk tanks and disposable canisters at most hardware stores, and most large stores, and is often the primary propellant in aerosols. | ||
[[category:fuels]] | [[category:fuels]] | ||
Revision as of 21:11, 18 December 2006
Propane is probably the most common fuel used by builders of higher-end combustion launchers - and with good reason too. It is powerful, easily metered, clean burning, widely available and inexpensive.
Propane can be injected the same way an aerosol fuel would, but it is common to devise a method to carefully control the amount metered into the chamber; often a conventional fuel meter or large syringe is used, although using the pre-mixed fuel mixture from an unlit propane torch is convenient for fuelling very small launchers.
It is important that the fuel/air mixture be near 4.2% by volume, because you lose power if your fuel/air mix is wrong.
Propane leaves no soot when burned, so it does not require one to clean their chamber frequently, and leaves practically no offensive odor.
Propane is sold in bulk tanks and disposable canisters at most hardware stores, and most large stores, and is often the primary propellant in aerosols.
| Temperature (oF) |
Vapor Pressure (psig) |
| -44 1) | 0 |
| -30 | 6.8 |
| -20 | 11.5 |
| -10 | 17.5 |
| 0 | 24.5 |
| 10 | 34 |
| 20 | 42 |
| 30 | 53 |
| 40 | 65 |
| 50 | 78 |
| 60 | 93 |
| 70 | 110 |
| 80 | 128 |
| 90 | 150 |
| 100 | 177 |
| 110 | 204 |
From: engineeringtoolbox.com
