Pulsejet powered Bobcat 52 RC plane saga continues

This updated engine has dual-valves and now delivers an honest 10lbs of thrust. I've added some extra ducting to the internals to help with airflow but seem to have over-done it. Now there's too much ram-effect which forces the engine to run lean once it gets flying-speed up. This was a short flight because once it became apparent that the engine was running lean I opted to cut and land (it was a blustery turbulent day). You can see that this engine has a *lot* of thrust by the way it "kicks" when it first starts and the amount of acceleration it has when released.

I reckon that the next flight will be "perfect".

Stay tuned -- it's summer here, the next flight won't be more than a week away.

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• pulsejet
• pulse-jet
• pulse
• jet
• pulsoreactor
• ARF
• RC
• plane
• model
• airplane
• remote
• control
• bobcat
• turbine
• Tokoroa
• SWMAC

[owner1610]

can we turn of the engine and start it after with this type of propulsion or it's no way back?

awnser me please XJET

[xjet]

@owner1610 These engines can't be stopped and restarted in flight. Once they're running, they're running and once they're stopped they're stopped.

[xennelul]

great plane!! You ever get youtubers stopping by?

[xjet]

Yep, from time to time.

[kitingboarding]

You don't half go for some hairy approaches. Sounded a little too windy for experimental model flying you crazy man. I love it.....!!! What sort of valve life are you expecting? Keep up the good work. Looking forward to seeing a perfect flight on a perfect day.

[xjet]

Yeah, it was windy but if I waited for the perfect day I'd never get any flight-testing done. So far the valve-life is outstanding. 20 minutes (mainly static) running and the valves aren't even discolored by heat. The dual-valve setup was something I've been thinking about for years but only just got around to implementing.

[mciceteade]

First and foremost I have no clue about jets.

I have no experience with jet engines what so ever my hobby is tesla turbines but i`m a hobby machinist and like to tinker it seems the valve life is often shorter due to overheating is that right? not particular your engine just general

have you ever tried to cool the valve plate possibly with cooling channels drilled throu the machined block part, under the valve seating area? to prolong valve life. just a thought.

I love your engine congrats

[RutinaRottis]

This one reason why passenger planes have turbine jets :-)

[riogranderailfan]

that thing sounds like my grandma after some country baked beans

[BlaccBoii]

fuck, nice landing.

[D1vid3By0]

@MultiNikos12345

Funny, i thought it was 2012. I figure everyone with a computer and a brain would know about google. Ok, forget the insult just look it up seriously, it's cool. I look forward to seeing awesome people like the guy in the video using other propulsion systems.

[MultiNikos12345]

How does these engines work? Please repl xjet.

[gummel82]

sounds more like a giant bee

[lomasck]

ww.z-jet.com.it sell a Zanin z 23 sport,z23RC , z 24 RC & soon a Z 26 with 7.5KG of thrust. A Falcon-120 kit plane is a cheap good plane for the big Pulse Jets.

[lomasck]

Fuel injected Pulse Jets Have been started before in flight with a small High Volt spark on The Plane.

[mlkiin]

jato turbão !!