Pulse jets WOW factor!!
 

A gentleman brought some home video to ur club meeting last night, of two pulse jets flying at an event in England. I think the date said 1989. Anyway, it is the first time I actually got to see video of these things and all I can say is WOW!!!!! The planes were a type of delta with a short nose section with canards.
Each plane had THREE pulsejets on it and they were amazing!!!
The sound and speed was incredible!
I just had to say something about it 'cause man, it was cooooolll!!
Any pulse jets videos clips out there anywhere!? :stupid:
Myles :D

Pulse jets?
 

Jetset,

There are several problems with pulse jets that have kept them from ever becoming popular. The sound is the first, actually noise is a better term. They put out an awful, nasty, throaty, grunting honking, barfing you name it kind of sound. Whether you like the sound of them or not they are incredibly, unbelievably loud, that is why they are usually flown out in the desert to get them as far away from people as possible. Another problem is power, they don't put out much. I talked with Bruce Tharp once about his Shockwave pulse jet model that was on the cover of RCM and he said it wasn't very fast at all. My propeller driven Diamond Dust would leave it, well, in the dust. Finally, they have no throttle capability.

Pulse jet flyers are kind of like washing machine hot-rodders, (yes, there are such people, no I'm not one of them!) a very small, select group that enjoy their hobby. I say more power to 'em. Due to the problems associated with them; however it is unlikely they will ever achieve any kind of popularity.

Pulse Jets
 

Yes, you are probably right about the popularity of them. I just thought it was cool since I have seen pics and read about them for years but never saw one actually fly until then. I would still like to hear one in person though...just to satisfy my curiosity!:D
Myles

Pulse jets WOW factor!!
 

Dustflyer


You are right they make a lot of noise. The Ukie guys flew them in competition years ago and I think approached 200mph.

If I remember correctly there was a guy who developed a way of throttling them.

Jim Whitney

Throttle?
 

That's interesting. Would be cool to see how he managed to throttle these beasts?:D
Myles

Pulse jets WOW factor!!
 

I belive I seen these pulse jets fly in England in the late 80's at a place called Ripley Castle, they were incredibly noisy, and flown by a team called the Ghost Squadron who are still around the show circuit.

jason

PULSE JETS
 

Back in the late sixties (Eons ago, I know) I lit off an OS pulse jet in the garage. All the dogs in the neighborhood howled for hours!
In 1970, we ran a much larger pulse jet at work in the outdoor test cell in order to evaluate it's performance for an RPV project (Ryan Aeronautical).
We did this on Saturday, hoping that we could run it when few people were in the plant. As luck would have it, the Mfg. VP, Bill Wiley was there(Unfortunately), and heard it....
We were told under pain of death "Do not ever run that Gawd Damn thing in my factory again!!!!!!!.
That was the loudest thing in the world. They used to be advertised in Popular Mechanics and Popular Science magazines as powerplants for home built helicopters. They were intended to be mounted at the end of each rotor blade, to provide a "no torque" rotor system, and eliminate the need for a tail rotor. They are not throttleable, as they rely on the flutter frequency of the reed valve to admit fuel to the combustion chamber.
Fond memories.........just thought I'd share that one with you.

Harley Condra
BVM REP
RAM REP
Buy American!!!!!!

Pulse jets WOW factor!!
 

Here in the uk a few years ago there was a volcan bomber with 4 pulse jets in it....It was absolutely amusing, very very noisey flames about 10 ft out of the back.......Good to watch from a safe distance!

Pulse jets
 

Harley,

What a great story, I'm still chuckling to myself. Very funny!

Gene

I've got a ton of 'em.
 

Gene,
Thanks for the compliment.
A sign of advancing age is the volume of stories one can recall.
But, that's better than the alternative.


Harley Condra
BVM REP
RAM REP
Buy American!!!!!!!

Pulse jets WOW factor!!
 

[QUOTE]

If I remember correctly there was a guy who developed a way of throttling them.

Jim Whitney

Hey Jim. He lives down in your neck of the woods. Mike Early down in Tempe....

Hey Dustflyer,
 

We have mounted and flown a PULSE JET on a Diamond Dust.
4 people to lite if off and lanuch it. Had a hard time keeping
the fuel flowing but it wanted to go. Have it on video but can't
find the still shots. Plane is sitting up in GA waiting for us to
give it another try. Need to fit it with a blader tank. Might see about pulling it out this spring.
Will post picture when I find it.

Pulse jet Diamond Dust
 

Now THAT I'd REALLY like to see!

Pulse jets WOW factor!!
 

Dean

Thanks very much. I will look this guy up and ask how the throttle worked.

Needless to say I will post the info.

Thanks again

Jim Whitney

Pulse jets WOW factor!!
 

Go here: http://www.conceptserviceselectrical.com/Richard's%20Home%20Page/richard5.htm A buddy o' mine (Pulse Jet Harry) bought one and I bet him we'd never get it to fly. I won. The most incredible thing though was one of the times we bench ran it, the bench BURST INTO FLAMES just due to radiant heat from the damn thing. UNREAL! What an obnoxious sound!

Pulse jets WOW factor!!
 

That link should be:

http://www.conceptserviceselectrical.com/Richard's%20Home%20Page/richard5.htm

Pulse jets WOW factor!!
 

QUOTE

Thanks very much. I will look this guy up and ask how the throttle worked.

Needless to say I will post the info.

Thanks again

Jim Whitney > He varied the amount of fuel going into the damn thing. The pitch/RPM? never changed but the volume did.
I think his last email is [email protected]
I do have his phone number if Ya want it......privatly.

Pulse jets WOW factor!!
 

For those who are interested, my article on R/C Pulsejet models appeared in the Feb 2000 issue of RCM. Lots of good info in there on the pulsejet models I've designed and flown over the past ten years. My latest, a twin Dynajet model, will be featured in the May issue of Model Airplane News in the Final Approach column.

The biggest problem with pulsejets these days is getting them! Bailey in TX used to make beautiful engines, but his tube welding machine was damaged and he hasn't gotten it going yet. America's Hobby Center advertised the Dynajet for years ($289), but not lately. Not sure if they have them anymore. The best place to find them is ebay, but the price is sometimes ridiculous.

Hey Jetset and miderror, I'd love to see the videos you've described if you can get your hands on them.

Happy to help any pulsejet enthusiasts out there!

Bruce Tharpe
BTE 541-582-1708

Pulse jets WOW factor!!
 

I have a Dynajet pulse jet engine mounted in a F-86 Ukie, what am I bid? ;)

Re: Hey Dustflyer,
 

Found a Pulse Jet Dust picture. Not a great shot but oh well.

Pulse Dust
 

miderror,

Thanks for that great video, totally wild! Absolutely hilarious watching everyone run for their lives when that pulse jet lit off. Hope those guys get it to run for more than a few seconds, maybe that bladder tank will do the trick.

Really enjoyed talking to you. You should have my Dust video by now. Any chance of seeing that mini-turbine on a store shelf any time soon?

Pulsejet
 

This is a great thread-could I get 2 pulsejets to fly this 30# F-4...........nah.........


Jackjet

Turbine Vortex
 

Bruce,

How about a turbine Vortex?

Do it
 

Turbine Vortex sounds cool. You going to do one Bruce?
W/ a Pulse Jet after burner maybe?
Get the PJ Dust video to you soon.

Bailey pulsejets
 

I believe this is the same gentleman I called early in 2001 and said lightning had hit his welder. I called back in Dec. and said lightning had hit his welder and it might be March , 02 before he got caught up. I was tempted to order one but I'm not sure what the deal is? There is plenty of info on the net if someone wants info including plans. We fly in a cow pasture so noise is not an issue. The turbines are still out of my price range. I built a couple of Schrecklings but havn't had much success with them. The pulsejet seems pretty foolproof.

Pulse jets WOW factor!!
 

Has anybody tried the pulsejets from Zmodels in Italy?

Pulse jets WOW factor!!
 

This is a great site
http://aardvark.co.nz/pjet/

You can trottle a pulse jet if the fuel injector is after the valves

Pulse jets WOW factor!!
 

>>I have a Dynajet pulse jet engine mounted in a F-86 Ukie, what am I bid? <<



I have a full set (six sheets) of the orgional plans for the U-control DynaMax F-86. They were published in one of the old magazines about a million years ago! Well, seems like it must have been in the late fifties. They were very scale like , and I'm sure must be a collectors item.

Not really for sale unless someone REALLY wants them! :-)

Regards,

Joe

Re: Pulse jets WOW factor!!
 

I had a Zanin Sagatterio Kit that had a 2 1/2 foot long 3" diameter pulsejet engine that was with the kit that i sold... They are still available from Zanin Models in Italy.. (Z Models)

Goto http://www.usrcjc.org/links.htm and select Z- Models to if you want to see it..Really awsome but im not a pulsejet person myself..I personally think a sound anology would be the sound of a 12 gauge shotgun going off about 200 time a sec.

Pulse jets WOW factor!!
 

I too have several jet plansets for pulsejets thought id convert them to ducted fans but never did..

Pulse jets WOW factor!!
 

I NEED A SPARK PLUG FOR FOR MY PULSOJETT,IN WHAT PLACE I CAN BUY THIS IN CALIFORNIA BECAUSE MY CLUB IS IN LA PAZ BAJA MEXICO.

Spark Plug
 

Alfyrc,
try CH Electronics-they will probably have them because they make ignition conversions for small model engines.


Jackjet

Try this instead!!!!!
 

Mark,
Cedric fixed up the web page, this is the new link:
http://www.conceptserviceselectrical...e/richard5.htm

Richard Newman

Oh, and that other pulsejet link is Awesome!!!!!! Wish we could sucker Ole PulseJet Harry into some of that action!

Pulse Jet
 

Several years back there was a company called jet engine technoligies that sold plans for a pulse jet engine. I got a set they were in a book style and said it had 7hp of thrust. I made a couple and they were awesome until while flying one day ended up with a huge fireball was just glad it wasnt on the ground. after that i stopped making them but i did enjoy them just too dangertous. I still have the plans somewhere and maybe one day build another and put it on a boat :0)

Joe

Re: Pulse Jet
 

If you look at the photos on my site, you can
see the vapors of unleaded gasoline, going
up in the air. You couldn't see that with your
eye's, only the camera caught it. It could have
removed the roof off my shop, after seeing
those photos, never again will I start a controlled
explosion anywhere near my home/shop!

Richard Newman





QUOTE]Originally posted by ProfLooney
just too dangertous.

Re: Re: Pulse Jet
 

I LOVE it !
AWESOME !
That engine must be at LEAST 1500 deg. F. !


Jackjet

Pulse jets WOW factor!!
 

Looks like a @##@# opperation to me

Eddie Weeks

Pulse jets WOW factor!!
 

Oh trust me Eddie, it was, IT WAS! Hell, with PulseJet Harry involved, what else was it ever gonna be?

Harry
 

Eddie,

When Harry is around, we quote your dad, at least every ten minutes or so!

Richard Newman

Pulse jets WOW factor!!
 

I don't know what word Eddie used that got censored, I hope it ain't what I think it is, but I'd say it was a true REDNECK operation!