Thermojet not producing thrust

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KE8DAH
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Thermojet not producing thrust

Post by KE8DAH » Wed Jan 18, 2017 3:18 am

Hello all,

I just finished my first pulsejet, a thermojet design I found in the thread "jims little 3LB thermojet". It starts and runs great, however its only producing half a pound of thrust at the most. Opening the injectors more doesn't seem to help. Do any of you have an idea as to what the problem may be? Thanks, Jake
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metiz
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Re: Thermojet not producing thrust

Post by metiz » Wed Jan 18, 2017 5:11 pm

it doesn't look like you flared the intakes. This will limit throttle range and thus thrust. Flare them and try again. It'll run a lot harder
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