How Can I Calculate The Thrust Of A Lockwood-Hiller Pulsejet

[Legolomaniak]

Good afternoon fellow pulse-jetters,

I am making a Lockwood-Hiller valveless pulsejet for a school project, and I need to calculate the thrust of the pulsejet, then I will test the thrust.
I just have one problem though, I dont know how to calculate the thrust.
Are there any good sites or formuals I could use?

Thanks in advance

[Kool]

It is very hard to calculate the thrust of a valveless pulsejet. Most of the formules I've found are based on valved pulsejets.

By the way, two years ago I've started just the same topic So using the search function could be very useful.

viewtopic.php?f=3&t=5132&p=60477#p60477

[WebPilot]

 If you're serious, first "straighten" out the Lockwood and run either a Uflow 1d sim or a NUDiS sim from the command line. This will give you an idea of the pressures along the axis. This pressure varies with station and time.