btw: please delete the original threadace_fedde wrote:Well, a leaf blower is in fact also a ducted fan... I think the problem is in the lighter refill bottle, not enough gas flow.kenshin wrote:Could electric ducted fan replace leaf blower to start a valveless pulsejet (mini thermojet)?
I don't have propane tank or leaf blower.
Use butane lighter refill bottle + rosscojector, the engine failed to start
Why don't you post some pictures that show the sizes of your equipment and the way it is installed?
Here are the equipments, one rosscojector blow into one of the two intakes
the tube is short with low friction resistance Is butane bottle capable of start a mini thermojet?
If not, next step maybe abandon butane and turn to liquid fuel + blow air, a electric ducted fan for model aircraft?
Light the injector or the tailpipe, reduce the gasflow, the flame retreats into the combustion chamber
The rosscojector noozle slit is adjusted
small slit = no enough fuel, engine rumbling in blow torch mode but does not start
larger slit = low injection gas velocity? no enough air entrained, runs rich and flame out
Room temprature is around 5 degree C, the bottle cools down quickly and lose pressure
warm the bottle with water, the gas flow become hard to control and flames out