Propane cannon

12 foot cannon, with 6" schedule 80 combustion chamber.
Meter pipe for presrcibed amount of Propane, needs to be withing 4-9 percent of the air in the chamber for proper combustion, too much or too little will result in a fail to ignite.
10-11 seconds hangtime with tennisball.
I have achieved almost 14 seconds with a solid ball, although quite dangerous.
Estimated height is about 800 feet.
Have to recalculate, it could be more, but tennis balls act weird in flight.

the meter pipe uses a shrader valve to inject propane into the chamber.
The chamber has a 5" computer fan mounted inside with electrical contacts outside the chamber via threaded rod to attach the power supply.
The vent cap is custom, utilizing a 1 1/2" rubber plug and a hole drilled in the end cap center. The plug has a threaded rod and wingnuts to allow the plug to opened and closed without removing the endcap for air circulation.
Barrel has male/female custom ground slip fit adapter for seamless connect of 2 barrel lengths.

Category:

Science & Technology

Tags:

• propane
• cannon
• spud gun
• tennis ball
• tube
• launcher
• big gun

[TheDeathCrawler]

Good idea

[joseleandro75]

@solaryellow123 oh crap i understood now xD

[solaryellow123]

@joseleandro75

I guess you missed the sick and twisted reference to magic bullet..

You will get it eventually:)

[0ddba1l]

Nice work.