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Old 01-26-2004 | 04:55 AM
  #9  
tjay88
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From: Cumbria, UNITED KINGDOM
Default RE: Fuel for Pulsejet

Well done Richi,

I bet you found it started even easier after the first run. Can't beat the noise of these things.

As for fuel systems, yes you could use a small electric fuel pump which are easily available as we use them on our turbine engines. However, they are not cheap and cost around £60 and upwards. There are a number of alternatives open to you. I know people have had success using a latex bladder as a fuel tank, inflating it with fuel and due to the tension of the bladder gives you a constant head pressure plus no chance of any bubbles (important - 1 bubble = engines stops). The alternative is to use a bag in a bottle approach and pressurise the inside of the bottle from a pressure taping from the engine. Again, fill the bag and bleed out any air. I've also heard that alot of people have done this in conjunction with using a 'Cline Regulator'. This is a small device which is a demand type regulator, i.e. it only allows fuel to flow when there is suction from the engine. You should be able to find the website easy enough.

The electric fuel pump method is probably the most expensive and difficult to get set up plus there's the weight factor of pump, batteries and controller. You only need a constant headpressure and this can be done by other cheaper means. Keep it simple.

Any ideas of what you are going to put the engine on/in?

Regards,
Tony