Rosch taking orders on OU Bouyancy device.

[d3x0r]

I've never once melted a basketball or tire compressing air into it... nor has it been significantly above ambient tempurature.   so even 2 degrees celcius increase is less than 1% loss to heat.

[sm0ky2]

In your balloon example, the balloons get inflated pushing up the local atmosphere as they get inflated, and you can reclaim most of that energy leaving you in deficit.  Similarly, work was done compressing the CO2 cartridge.  Some of that work is reclaimed when the diver opens the cartridge to surface.

the balloon thing wasn't an example, it was a comment...

as for the CO2 cartridge, there is plenty of info available on this. The force required to fill them (+ a little extra to seal it) is give or take 1.6 newtons, Which is exactly what you get back out. its compressed gas, in actuality you gain a little extra because the gas is cooled before it is filled, so you have extra pressure from the ambient heat.

In either case, it doesn't come anywhere close to the energy gained by the sustained buoyant force over time required to lift the diver 100 feet through ocean water.

Do your math

[ramset]

Mark E
You should get another act ,  trying to peddle your way around a context for your comment as it applies to NASA and their research into propulsion drives ...your   garbage in garbage out comment to the engineers at NASA ,makes you sound like some pompous ignoramus
that sweeps all claims with the same broad brush of ignorance and assumption.

But that's what you love to do ... throw insults in the wind from behind the Curtain of alleged anonymity at those who actually do the hard work and research .

as if it really mattered ..to anyone but yourself.
your a legend in your own Mind Mr......

[tinman]

Jesus H ...  Well maybe if you have the flaps extended.  These silly ideas have been debated many times over the past 13 years.  A 767 does not come apart at 220MPH at sea level.  You've been drinking more of the conspiracy theorist mind altering Kool-Aid.  Go calculate Mach 0.86 at sea level.  It's a lot faster than 220MPH.  The people running around like the Mad Hatter are not the professionals at NIST who carefully investigated and then composed that report.I just showed you a steel reinforced freeway intersection that failed due to heat from a petrol fire.  Show me how many 1000' or higher buildings have survived a 767 full of fuel crashing into them at 500mph.No it is some really screwed up people bent on conspiracies who do not perform proper investigation who come up with lame ideas like a 767 coming apart at 220mph at sea level.  It is worse than wrong.I see:  The conspiracy nut Kool-Aid gets you all giddy.Really?  You think that one of the largest office buildings ever built is a speck?  Take another swig of that Kool-Aid.Again really?  It's not like the video didn't get released:  http://www.cbsnews.com/videos/video-of-9-11-pentagon-attack/Well you put yourself into a logical pickle with that idea.  If you believe the FDR then the plane flew the path the FDR indicated and either overflew the Pentagon behind an invisible cloaking device to some secret hangar where the passenger and crew were murdered and the evidence destroyed or the plane hit the ground and the building.  Take your pick. He is one crazy person who insisted on pressing his unfounded ideas.  His colleagues who actually worked in specialties like structural engineering were some of the ones who complained the most.  Nutty is as nutty does.  You apparently partake that Kool-Aid which I find disappointing.  But, there you go.You're getting nuttier and nuttier.

Mark
I really think that YOU should go and do some reserch your self on a 767's speed capabilities at sea level-start with boeings spec sheets first. Take note of the built in speed limits to avoid things like bird strikes taking out the plane at low altitudes. Also see the calculations on maximum thrust v air density v mass of the plane.. Also try and sepperate cruising altitude speed from sea level speed.

Hey,who knows,maybe the guys that couldnt even fly a cessna that managed to pilot a 757 and 767 beyond there capabilities also worked out how to hack into the planes main frame,and disable all the built in safty limits of the aircraft.

A little graph from boeing on the 767-200-->you should go read up a bit Mark,and get YOUR head out of ya ass. Im not seeing the mach .86 at sea level Mark-->who is on the cool aid?.

[MarkE]

I've never once melted a basketball or tire compressing air into it... nor has it been significantly above ambient tempurature.   so even 2 degrees celcius increase is less than 1% loss to heat.

Get a tub of water.  Fill it 3/4s full.  Let it set for at least an hour so that the water  reaches ambient temperature.  Get a: empty inner tube, air pump of any kind, and good pressure gauge.  Fill the inner tube to a normal pressure reasonably quickly, say less than 1 minute.   Record the pressure.  Place the inner tube in the tub of water and let it set for 15 minutes.  Read the pressure again.