A LIMITED EDITION
Series of Full Color Mini-Posters Commemorating
- 2004 -
INTERNATIONAL YEAR OF
THE VALVELESS PULSEJET
Witness the 21st Century jet motors that
laugh at engines with moving parts!
See the red-hot pipes and blue-hot flames
of full-thrust continuous running
at over 200 explosions per second!
NOW is your chance to own a memento of the year
that homebuilt valveless pulsejets came of age
... but this LIMITED EDITION series will sell out fast!
In honor of the year when just about everybody
got their homebuilt valveless jets to run!
(Go directly to posters)
Witness the blue fire and red hot steel
of history's most nearly impossible jet propulsion engines
by Larry Cottrill, Editor, jetZILLA Online Magazine
The year that was ...
For the past three years or so, there has been a growing interest for those
of us who share Kenneth Moller's pulse-jets.com forums in the design of those most
elusive of mechanical beasts, the valveless pulsejets. Before 2004, a lot of history
had been cited, a lot of theory had been put forth, and even a fair amount of steel
had been butchered - but there was precious little roaring, and even less propulsion
thrust, to show for it. By the end of 2003, there were some promising signs that real
propulsion engines might actually appear; but, we had seen signs before, only to have
high hopes cruelly dashed.
The engines that roared ...
However, beginning early in the year with the big prototypes of Australia's
Ross Gordon and California's Bill Hinote and the uniquely innovative small-scale 'Kazoo'
creations of Mike Everman (another Californian), we began to get our arms around the
monster. By summer, I had worked out my first "Five Dollar Pulsejet", a valveless
design with parts made of nothing but electrical conduit (independently
built and run by Connecticut high school student Steve Bukowsky). Mike went
on to develop a variant called 'Kazooenstein', and I worked out the improved Elektra
II (though it obstinately refused to run for a few months). Sharing of lessons
learned was free and uninhibited, with numerous successes and failures
spurring us on. I eventually came up with the Focused Wave Valveless, code-named
'Short Lady', and this time Steve put together the original prototype for me - and got
it to start and run on his first try! [That's his engine in the poster, immediately
above.]
This was the year that everything came together. Mike showed us how a simple, working
'weldless' design could be built simply by smashing steel pipe! Bill Hinote revealed some 'secret'
proportions he had noticed on several valveless engines of historical interest (which guided my
design of the 'Short Lady'). On the theory side, we had tremendous help and encouragement from experts
like Graham Williams of the UK and Bruno Ogorelec of Croatia. Several new design hypotheses were
put forward and experimentally tested. And for the first time most of us could remember,
a lot of it actually worked!
The posters ...
As a member in good standing of the forums, and as editor of jetZILLA Online
Magazine, I decided that we needed to do something special to celebrate - to announce to
the world that this was the year that people of differing interests, skills and nationalities
had produced innovative valveless pulsejet designs that are easy to build and really run! Since we
all take pictures of our creations in action, I figured, what better way than to create a series
of colorful mini-posters to commemorate our 'International Year of the Valveless Pulsejet'?
I offered to produce the posters and contribute $1.00 US to the pulse-jets.com Website from
the proceeds of every poster sold.
What you're getting:
Posters are printed on heavy weight, bright white, acid-free paper, 11 x 17 inches
[about 28 x 43 cm] outside dimensions. Some are 'portrait' format [vertical] and some are
'landscape' format [horizontal]. They are shipped carefully rolled in an ample, rugged
mailing tube. I will only accept up to five posters in a single order, and will only ship
a maximum of five posters in a single tube! If you want more, you'll need a second order.
All US shipments are Priority Mail with Confirmation [i.e. a tracking number].
[Foreign shipments are by the most economical means available with proof of mailing, and
promptness of delivery cannot be guaranteed.] Shipment will be within two business days of placing your order.
All payments are through PayPal, and if you don't
have a PayPal membership, you can choose
from several common credit cards when you order.
NOTE that these are processed from digital images provided by the engine creators - you WILL
see pixels visible on close inspection. The posters are guaranteed to look beautiful when
seen from a normal viewing distance of about 25 inches [approx. 70 cm]. Sorry, larger prints
are not available.
Posters are signed by Larry Cottrill and hand-numbered on the white border, and are strictly limited
editions - there will be ABSOLUTELY NO MORE THAN 1,000 PRINTED of each poster offered!
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Now, choose from these full-color 11x17-inch
digital mini-posters to tastefully adorn your
home, office or workshop ... |
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I'm PayPal Verified
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Poster I:
"Actually, I am a rocket scientist." [Steve
Bukowsky's Focused Wave Engine prototype]
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Digital mini-poster (portrait): $ 7.00US
FWE-1: 11 x 17 inches [28 x 43 cm, approx.]
(add $4.00US S&H - add'l copies S&H FREE!)
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Poster II:
Bill Hinote's mighty Kentfield engine
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Digital mini-poster (landscape): $ 7.00US
KEN-1: 17 x 11 inches [43 x 28 cm, approx.]
(add $4.00US S&H - add'l copies S&H FREE!)
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Poster III:
Elektra I & Elektra II "Five Dollar Pulsejets"
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Digital mini-poster (landscape): $ 7.00US
ELK-1: 17 x 11 inches [43 x 28 cm, approx.]
(add $4.00US S&H - add'l copies S&H FREE!)
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Poster IV:
Marten Klein's K-PT 04 & K-PT 05 engines
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Digital mini-poster (landscape): $ 7.00US
KPT-1: 17 x 11 inches [43 x 28 cm, approx.]
(add $4.00US S&H - add'l copies S&H FREE!)
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Poster V:
"Let's make some NOISE!" [Larry Cottrill &
his Elektra I "Five Dollar Pulsejet" prototype]
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Digital mini-poster (portrait): $ 7.00US
NOISE-1: 11 x 17 inches [28 x 43 cm, approx.]
(add $4.00US S&H - add'l copies S&H FREE!)
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![Digital mini-poster: Let's make some NOISE! [Larry Cottrill & his Elektra I valveless prototype] - image Copyright 2004 Cottrill Cyclodyne Corporation](Poster005_sample.jpg) |
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Poster VI:
Focused Wave Valveless Pulsejet Closeup
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Digital mini-poster (portrait): $ 7.00US
FWE-2: 17 x 11 inches [43 x 28 cm, approx.]
(add $4.00US S&H - add'l copies S&H FREE!)
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ZERO MOVING PARTS - and she just keeps running,
even after you pull the ignition wires!
Larry Cottrill and his 'Short Lady' Focused Wave Valveless Pulsejet
Page updated: 15 February 2005
Copyright 2005 Cottrill Cyclodyne Corporation
Mingo, Iowa USA
- All rights reserved -
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