Pulse Jets
 

Does anyone sell them on the market?

RE: Ram Jets
 

Ram Jet or Pulse Jet? Ram Jet compression is done with speed, like mach 1. There are Pulse jets. I wish the were more useable, but they are super loud and get really hot and no throttle. CHeck Utube for videos. Pulse jets are very simple and it is possible to make one. But they are till made and they pop up occasionally.

RE: Ram Jets
 

Do a google search for Pulse Jet - Tons of stuff there

RE: Ram Jets
 

Sorry, I ment Pulse Jet. [X(] I saw this... and I don't know if it is very safe, or it will have enough power to put it in anything.

http://www.cottrillcyclodyne.com/Mag...gs/Maggie.html

Thanks Mike, I'll do that.

RE: Ram Jets
 

Here in Southern California, the dryness of the humidity and the lack of rainfall makes a very dry tinderbrush in the spring, summer and fall months. The flame coming out of the exhaust and the danger of a fire on a crash makes it very risky. The videos of turbine jets catching fire after a crash creates the danger of a brushfire. Hopefully, it will be quickly contained. If not and the conflagration becomes a full blown brush fire and with expensive fire fighting equipment, the culprit pilot can be sent a million dollar bill for the firefighting efforts. If there are structures burned down and injuries and fatalities.......it could end up in a criminal case and/or lawsuits. I would imagine in some dry lake bed in Southern California would be OK.........but then the distance and the hassle of driving that roundtrip.........Oh well!!!
larry

RE: Ram Jets
 

How many miles is it from your flying field to the nearest house? The noise of a pulse jet is incredible. Oh, and they can't be throttled, either.

RE: Ram Jets
 

That link is an absolute (short term) dream come true [sm=idea.gif][sm=thumbup.gif][sm=spinnyeyes.gif][sm=kiss.gif][sm=49_49.gif][sm=what_smile.gif][sm=greedy.gif]

RE: Ram Jets
 

Yes... I wouldn't want to have a Pulse Jet in CA unless I was flying around the sand dunes. Here in Upstate NY we get a lot of rain. I live less than a mile off the shores of Lake Ontario.


Quite a ways... about 3-4,000 feet away est. Also I wouldn't play with a Pulse Jet unless I had a fire extinguisher on hand. I was thinking of making a scale 1/2 Scale FI-103 if and when I can hunt down the plans. I believe it would be a great eye catcher at shows, and there wouldn't be many things like it.

So far what I see on the Web, there is no one who sells them... they all seem to be experimental or homemade.

Yes that link doesn't tell me how much thrust it has, and if it has been tested on a plane yet. I should Email him for more info then go from there.

RE: Pulse Jets
 

http://www.youtube.com/watch?v=1e-Ar7gb4tQ
http://www.youtube.com/watch?v=_DDNP...eature=related
http://www.youtube.com/watch?v=fj89SrssZrM
If it was not so dangerous I would like to do a ME 163. It is amazing how loud they are to be picked up with a camcorder mic.

RE: Pulse Jets
 

On the crash tape OOPS and SON of OPPS they have shots of one of these ram/pulse jets being launched in a scale Buzz Bomb off of our dry lake bed here. Looks lie a lot of fun but it's a lot of work for a one shot deal. And yes, there was flames at the end!!

RE: Pulse Jets
 

If you have access to a suitable flying field flying a RC pulse jet is doable. Yes it will be NOISY and the start up procedure needs learning. You definitely need at least 2 serious fire extinquishers and be prepared for a lot of naysayers in your club. I would have a fuel shut off on the throttle stick though.

FYI The late Roy Leivers flew a Avro Vulcan with 4 yes FOUR pulsejets. I saw it once and it was louuuud!

RE: Pulse Jets
 

I would like to make one with a fan/compressor/turbine. The wheels are spinning but I'll let you know if anything comes of it.

RE: Pulse Jets
 

xjet was making them a little while back...he might still have one available? They were at a reasonable price too. (IMO anyway )
He hangs out in the Glow Engines forum a lot...you might PM him and ask.

He's got a couple vids on YouTube w/ one mounted on a VariEze...

RE: Pulse Jets
 

Thanks people... yes I would get my clubs blessings before I attempted to operate it there. If they were to say no, I'd have one nice working model, static display FI-103 for all the shows I attend. :D

RE: Pulse Jets
 

I remember when i saw one at Rouge Park in a control line plane, it was so loud it would make a grown man cry. But back on subject. Bruce Tharpe used to and may still fly some. And i believe had figured out some type of throttle system. You may want to try a E-mail to him at his company. He might be able to hook you up.

RE: Pulse Jets
 

Many years ago, I too saw one on a control line aircraft. The noise had to be heard to be believed. Everyone watching had their fingers in their ears. The pilot and pit crew all had earmuffs on. But when this thing got going, it was unbelieveble. And this from a pulsejet that was about 12" long and no more than 1.5" diameter at the widest point.

The model was all engine, with a couple of short stubby wings, no mopre than 14-16" span. The pilot was leaning way way back against the centrigugal force of this little rocketship that was doing circles around him. It went by in a blur. I'm surprised the lines took the load. I noticed afterwards that he had a 3rd line on the handle which I was told was a fuel cutoff in case things got 'out of hand'.

The starting procedure seemed a lot of hassle. These guys had a small cylinder of compressed air that they would squirt into the intake, and what looked like a car ignition coil and battery which they hooked up to a tiny sparkplug on the body of the jet. It took quite a few goes to get it running. It would fire up, go BANG BANG BANG BANG in quick succession then die. The re-prime, repeat process with a few more BANGS added, then die again. Eventually the BANGS became one continuous roar and it was away. By the look of it, it didn't produce much thrust, and took a lap or two to get up to flying speed, but once there, it was was an impressive sight indeed.

I have had an interest in these things ever since. But I doubt I'll ever actually build one, though I have come across a few plans on the net for them. They look very simple, but from what I have heard, for someone building one from scratch, they usually go through several prototypes before arriving at a viable design.

RE: Pulse Jets
 

I repair the pulse jet foggers and the noise is unbeliveble and the heat! Tempermental buggers. lot of spare parts might have to build one for the SPAD!..

RE: Pulse Jets
 

Does AMA cover a Pulse Jet?

RE: Pulse Jets
 

Someone at the Toledo show had one for sale in the swap shop. Wanted 285.00 for it. Quite a bit more than i remember them going for. It did look really nice though.

RE: Pulse Jets
 

http://www.dynafog.com/other/dynajet/index.htm

RE: Pulse Jets
 

I remember the pulse jets from the late 50's early 60's. I first saw them at a controline meet in plainview, Long Island. The starting process was different then. The pit crew used a bicycle pump to start the engine. The model was a speed plane mounted on a wire dolly for take off. Wow what a noise maker, and fast. I never saw another one fly after that meet. I think they were called Dynajet.
I don't think there was ever any other use for them but controline speed.

Sledge_78

RE: Pulse Jets
 

1959 OS type 11 Jet. Whats left of the spare reeds and the Ford Model T ignition vibrator box to provide a 'shower of sparks' for the plug (model T's used one of these boxes for each cylinder). It was wired to a 6 volt hot shot latern battery and was keyed with the momentary button in the picture. The schreder valve nipple for the bicycle pump is just above the fuel line were the fuel metering jet is.

John

RE: Pulse Jets
 

Thanks for the link! ;)