My First Valved Pulse Jet

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RMMK
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My First Valved Pulse Jet

Post by RMMK » Fri Jan 03, 2014 4:26 pm

Well I built my first 10lbs Valved Pulse jet following the design calculations of Eric Beck Calculator..... I have used the aspirated engine approach! When I tried to start the engine by blowing air inside using an air-blower, powered on the spark plug through a driving circuit based on an automobile ignition coil and sprayed some gasoline continuously through a small refrigerator copper capillary.......but I couldnt start the engine........... Worst of all it didnt even created any sound or bang!! I am at my wits end now! Whats the problem here??? Plz help me on it because I really want this thingy to work!!!!

metiz
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Re: My First Valved Pulse Jet

Post by metiz » Fri Jan 03, 2014 4:51 pm

does the fuel ignite? What's the frequency of your sparks?
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RMMK
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Re: My First Valved Pulse Jet

Post by RMMK » Fri Jan 03, 2014 5:24 pm

No! The fuel does not ignite! Well my ignitor should provide round about 8 sparks per second (8 Hz freq.) with 66% duty cycle!

metiz
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Re: My First Valved Pulse Jet

Post by metiz » Fri Jan 03, 2014 11:14 pm

open up the sparkgap of your sparkplug a bit
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RMMK
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Re: My First Valved Pulse Jet

Post by RMMK » Sun Jan 05, 2014 4:49 pm

It works! Its buzzing! WoW! thanks...opening the gap did the trick.... but it seems like I was also spraying a very small amount of fuel! :lol:

ace_fedde
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Re: My First Valved Pulse Jet

Post by ace_fedde » Tue Jan 07, 2014 10:29 am

And now a valveless! :D
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