youtube

[Mark]

Yet another ...
Manned Octacopter
https://gfycat.com/BrownParallelCaribou

[Mark]

Whoosh bottle with jam jar jet effect.
https://www.youtube.com/watch?v=gKkVWvp ... e=youtu.be

And this also from today's Reddit.
https://www.facebook.com/DailyPlanetSho ... 725664195/

https://www.youtube.com/watch?v=qHurBlH2pmI

[Mark]

Tealight Pulse Jet
"I honestly have no idea how I made this. I was just experimenting around with empty tealights and pure ethanol and suddenly it started pulsing."
https://www.youtube.com/watch?v=HxsJna3tMF4

[Mark]

A pulse jet with a jam jar jet exhaust port
自作小型パルスジェットエンジンで風車回し2 pulse jet engine
https://www.youtube.com/watch?v=rnqfKCuFrss
https://www.youtube.com/watch?v=sBaAxmueDLM

Jam jar jet boat
https://www.youtube.com/watch?v=MKMab6pJwas

[Mark]

"It is a compact, pulse jet using a drug bottle. A hole of 6 mm is drilled in the lid of the bottle."
Bottle pulse jet
https://www.youtube.com/watch?v=RD9tMbgvfn8

Not a bad demo
https://www.youtube.com/watch?v=JkWpQRS3vkY

Glass tube putt-putt boat.
https://www.youtube.com/watch?v=JokZp3zXhEU#t=1m17s

[Mike Everman]

I want to make a big putt-putt boat. have a meet and do races or something

[Mark]

Putt-putt boats would be more auditory friendly.

[Mark]

I want to make a big putt-putt boat. have a meet and do races or something

Tidbits from 2005 - Just old stuff
"You can also use a single piece of copper tubing with one end pinched closed. This might be thought of as a "half" of a typical putt putt engine. A fellow I conversed with was using such an apparatus to propel his canoe along a river. Not really the most efficient way to use heat but it worked. In a vague way, my piglet snorkeler is "half" of a typical valveless pulsejet."
Mark

And this I dug up from the Pop-pop page references. It might be funny to brightly colorize a man-sized putt-putt boat in keeping with the miniature putt-putt boat motif. ha

Man-sized engine and stuff ...
"This paper is concerned with a remarkable fluid flow phenomenon which should
logically be called "the McHugh effect," or "McHugh cycle" after its discoverer,
C.J. McHugh In its original form (Figure 1), it was clearly the
(mechanically) simplest heat engine ever invented. When heat is applied
to the boiler, the water column in the tube oscillates backward and forward
and the toy boat is driven forward through the water."
http://www.dtic.mil/dtic/tr/fulltext/u2/a046533.pdf

1915 McHugh Patent
http://pdfpiw.uspto.gov/.piw?PageNum=0& ... C200%2C960

http://www.nmia.com/~vrbass/pop-pop/

[Mark]

How Heat-Resistant (Borosilicate) Glassware Is Manufactured
https://www.youtube.com/watch?v=PWdvQIBAzhk

[Mark]

The Lava Lamps That Help Keep The Internet Secure
https://www.youtube.com/watch?v=1cUUfMeOijg

[Mark]

What's new, Atlas?
https://www.youtube.com/watch?v=fRj34o4hN4I

[Mark]

Inflating Evacuation Slides
https://www.youtube.com/watch?v=nM8P6TtcrFY

This entraining aspect made me think of the Gluhareff pressure jet to some extent.

"Slides inflate with an initial boost from a canister of compressed carbon dioxide and nitrogen. The canister provides only about one-third the volume needed to inflate the slides. The remaining volume is supplied by ambient air, channeled into the slides through aspirators."
"When the inflation mechanism is triggered—by a lanyard pulled by the slide as it tumbles from its storage case—gas from the canister accelerates through the aspirators at high speed, creating a vacuum that sucks ambient air into the aspirators through louvers. When the slide is fully inflated, the louvers close."
Read more at http://www.airspacemag.com/flight-today ... 51CHQYT.99

[tufty]

You can do better than this, Mark

https://www.youtube.com/watch?v=FEOEyDRzkNE

[Mark]

I recall probably several years ago pondering that swan vase/decanter he tried, wondering if something like that might be fun to tinker with. Here he has an illustrative demonstration of using too thin of glass. It was fortuitous he was looking toward the camera when it gave way.
Model Rocket Engine Vacuum Tube Explosion
https://www.youtube.com/watch?v=QvHQpWNLTSo

[Mark]

3D-printed objects fit perfectly together
https://gfycat.com/AbsoluteEsteemedBasil
The Tallest & Tiniest Twist Containers Ever!
https://www.youtube.com/watch?v=zeK5XfstMLU