www.pulse-jets.com

special epoxy...what type of epoxy?

CP/CG is overly stable still (tube fin effect helps)flies great straight as an arrow. Just don't try it with low thrust ejector motor.
Better sober up before ya build...these things can hurt ya!

Ready for early ejector only flight test.

Just received my nozzles today. Busy tomorrow will post pics Thursday/Friday. Nozzles are thin - graphite CNC turned from my CAD files. I'll be coating the tube ID with ceramic paint and gluing nozzles in with ceramic glue Thurs and Friday. Static test first flight (ejector test) this weekend. Dual ...

Thanks James,

Sorry about that.

Thanks Jerry, Impressive air-breathing projects going on down under. Been following University of Queensland projects for years. What a coincidence you should mention sorbitol. I've been cooking with it lately....sorbitol, paraffin, carbon black. Hope to light my candles next year. I plan to post a ...

Starting small with ducted rocket testing ejector augmentation. Waiting to install graphite nozzle.

Fill it with a water based saline solution allowing for evaporation cooling through small holes in the inlet spike. Providing it is hollow or drilled out interior.

Searching for information on German Pabst ramjets used on Focke-Wulf Ta283. These would have been subsonic.

James,

Please keep me informed on progress. I'm very interested in seeing how this project develops and flies.

Doug

SCRAM tech would be well beyond hobbyist capability. Ramjet is alone challenging at mach plus velocities. One would need to obtain a velocity great enough to carry model into space after engine burnout. Altitude depends on burn time and velocity obtained during that burn time. For a ramjet flying a ...

Sounds awesome would like to see some pics? Unable to access video, So what size is this ramjet diameter? Have you flown it yet?

Are there some basic KISS ratios, calculations, or formula's to aid in estimating the relationship between diffuser expansion (inlet to outlet CS area ratio) and degree, percent or ratio of pressure (density) rise, temp rise, velocity decrease, across the diffuser section? I've searched the internet...

Thanks for the advice and information. I will play around with it and see what develops.

Decided to eat this elephant one bite at a time. First project will be an air augmented rocket utilizing fanno flow (flow through a constant duct). Similar to the old Estes Augie II only scaled up and tweak some. The larger diameter duct tube will be longer with only a few inches of a conical cone c...