www.pulse-jets.com

tufty wrote:Put succinctly, water injection = extra massflow = extra thrust.

Eric Beck is the man for chapter and verse on it. Here's some good stuff Mark found - viewtopic.php?f=2&t=4628&st=0&sk=t&sd=a ... ion#p54152

Oh, and augmentors.

"he wrote compactly but clearly" (succinctly) I had to look that one up!

tufty,
I had heard of water injection for turbine engines, but had not idea it has been experimented with on pulse jet engines. I did read something about running a mixture water and alcohol in one of Maddox valved pulse jet engines. But with little or no success. I read the research mark did. Your right if anyone would know Eric Beck, would.
Good detective work!
Thanks again

White pine County Rec. Ely Nevada Cave lake Bathtub Races Summer of 2011 25th of June.
My entry was a twin Lockwood Pulse Jet Engine Liquid Propane Powered. The gasoline injection turned out to be harder to vaporize than I anticipated.
However the larger pontoons gave me more flotation. i.e. Less water surface tension. http://www.youtube.com/watch?v=rQyY8CLAlY4
A link to the YouTube Video at Cave Lake Ely Nevada.
As I get more Pitchers they'll be added. This years event included a total of 19 entry's. 4 of them from out of town.

Superb Doug

Viv

Here I'm just entertaining the crowed. Fire and loud blast's! that just seems to please them.

Photo By Ely Times Following artical
By John Plestina
Ely Times Editor
http://www.elynews.com/articles/2011/07 ... life01.txt

Yeah, Doug, really cool. How many boats came out? Anything as interesting as pulse jet power?

Mike Everman wrote:Yeah, Doug, really cool. How many boats came out? Anything as interesting as pulse jet power?

Hi Mike,
Yeah! there were more paddle boats this year. The motorized group was smaller, only 5 and 1 sunk before the race started. 19 total entry's this year. 6 entry's from out of
town some from Utah and about 30 Californian's, even a couple from Florida with an estimated crowd at 3000. But I was the only Jet Engine Powered Bathtub. My Bathtub Boat had Better Buoyancy, not much faster though.

Just a bit of my history.
My career was spent working with my hands. Fixing cars in High School, then working on some heavy equipment and finally changing my career to Aviation Hydraulics’ on Chinook Helicopters while in the (ARMY).
I’m retired from the Postal Service. And for the last 3 years, as my hobbies have changed from bird houses to Pulse Jet Engines, I enjoy a new challenge.
It only made sense to use this simple forum of Jet Propulsion to move something.
This is the second annual Ely Nevada, Cave Lake Bathtub Races my second Lockwood Pulse Jet Engine-Bathtub. This year’s entry has bigger pontoons and really that’s the big difference.

I guess it's a little early but here is a pair of 110 lb Valued Argus PJ Engines. The crowd is going to love
These noise makers! I've haven't had a chance to fire them up. Been real under the weather. Just wanted to add these pitchers while I was thinking about.
This turned out to be a very expensive project.

Haha mate you are taking this race far to seriously but i love it any way, they look wonderful, who did your welding?

Viv

Those ought to jiggle some ear bones
Good work, hope ya get to feeling better.

Viv
This guy did the welding for me. I could meg weld ok but his work is first class.
Remember Eric the guy from Sweden?
Here's a link. It was my inspiration for this project.
viewtopic.php?f=2&t=5717&st=0&sk=t&sd=a&start=45

PyroJoe
Thanks
having the flu sucks! Just when your feeling better! your not.

All in good fun!
http://www.youtube.com/watch?v=I4THXypp ... S63fnIPXpg
Twin 110 lb thrust valued engines! by Robert Maddox
Forward bow to heavy I think, plus to much thrust for a pontoon bathtub boat?
Oh yea' this was the fourth year. For the Cave Lake Ely Nevada Bathtub Boat Race (06-22-2013)
It's loosing notoriety only eight entry's this year, may not be a fifth year race.

Looks like a good time. A little short on freeboard or was that an attempt at the submersible division? I hope it makes the fifth year. How did you like those Maddox engines?

Ha, cool. Need to point the motor tails up to get boat nose up. put some hydrofoils on it then hang on!