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#11
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On Fri, 05 Dec 2008 04:45:02 +0000, Brian Bange wrote:
While watching this (stupid) video, I ran across one much more interesting. Take a look at: http://www.youtube.com/watch?v=WcWSI03NKo0 It is an interview with the builder/designer of Sunseeker. Does anybody know if this is the same Eric Raymond who wrote "The Cathedral and the Bazaar" or a different Eric Raymond? -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
#12
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On Dec 6, 8:10�am, Martin Gregorie
wrote: On Fri, 05 Dec 2008 04:45:02 +0000, Brian Bange wrote: While watching this (stupid) video, I ran across one much more interesting. Take a look at: http://www.youtube.com/watch?v=WcWSI03NKo0 It is an interview with the builder/designer of Sunseeker. Does anybody know if this is the same Eric Raymond who wrote "The Cathedral and the Bazaar" or a different Eric Raymond? -- martin@ � | Martin Gregorie gregorie. | Essex, UK org � � � | That would be a diffrent Eric Raymond. I've known Eric for 25 years and helped him build the wings for the Sunseeker II. He's definitely a builder, not a writer. Mike Ziaskas San Diego, CA |
#13
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Martin Gregorie wrote:
On Thu, 04 Dec 2008 18:51:18 -0800, wby0nder wrote: http://www.youtube.com/watch?v=1IsaM...eature=related How about that: perpetual motion resurrected yet again. Doesn't appear to be. One notable non-perpetual motion aspect appears to be taking advantage of the temperature differential between the lower atmosphere and the upper atmosphere. That point _is_ rather clever, though whether it can be taken advantage of with sufficient efficiency is another story. This appears to be the original web site: http://fuellessflight.com/ I think the core idea - taking advantage of that temperature difference - appears lost by inclusion of too many extraneous details in the video. It was also a mistake for the inventor to claim on his web site that the "power cycle can be repeated indefinitely to allow the craft to stay aloft virtually forever." Words like "indefinitely" and "virtually forever" are self-defeating from a sales pitch angle. If the inventor had said the following instead, I think he'd have less problems with claims of perpetual motion: "The power cycle can be repeated for as long as a temperature difference exists between the upper and lower layers of the atmosphere - wherein the airship utilizes them as a vast heat sink and a vast heat source. Enough flights could, in theory, eventually "exhaust" the available energy potential. Inventer would insert facts and math here, showing how that is not a serious concern." |
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On Sun, 07 Dec 2008 18:37:30 -0600, Jim Logajan wrote:
Martin Gregorie wrote: On Thu, 04 Dec 2008 18:51:18 -0800, wby0nder wrote: http://www.youtube.com/watch?v=1IsaM...eature=related How about that: perpetual motion resurrected yet again. Doesn't appear to be. One notable non-perpetual motion aspect appears to be taking advantage of the temperature differential between the lower atmosphere and the upper atmosphere. That point _is_ rather clever, though whether it can be taken advantage of with sufficient efficiency is another story. If a powered compressor, driven by batteries, an IC engine or even photocells on the top surfaces, was being used to compress the gas for descent it might work, but using energy from forward motion to run the compressor sounds like perpetual motion to me. The same scheme is being used successfully in undersea gliders for oceanic research, but these all use battery powered pumps to control buoyancy. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
#15
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Martin Gregorie wrote:
On Sun, 07 Dec 2008 18:37:30 -0600, Jim Logajan wrote: Martin Gregorie wrote: On Thu, 04 Dec 2008 18:51:18 -0800, wby0nder wrote: http://www.youtube.com/watch?v=1IsaM...eature=related How about that: perpetual motion resurrected yet again. Doesn't appear to be. One notable non-perpetual motion aspect appears to be taking advantage of the temperature differential between the lower atmosphere and the upper atmosphere. That point _is_ rather clever, though whether it can be taken advantage of with sufficient efficiency is another story. If a powered compressor, driven by batteries, an IC engine or even photocells on the top surfaces, was being used to compress the gas for descent it might work, but using energy from forward motion to run the compressor sounds like perpetual motion to me. I looked again at the video and it seems that it and the fuellessflight web site have very different emphasis. The video just isn't appropriate or convincing - seems to miss the whole point of the novel aspect of the invention as described on the web site. The same scheme is being used successfully in undersea gliders for oceanic research, but these all use battery powered pumps to control buoyancy. I wasn't familiar with that until you and someone else on the thread pointed that out. It does seem to make the main point of the invention less novel. |
#16
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On Dec 8, 10:55*am, Jim Logajan wrote:
Martin Gregorie wrote: On Sun, 07 Dec 2008 18:37:30 -0600, Jim Logajan wrote: Martin Gregorie wrote: On Thu, 04 Dec 2008 18:51:18 -0800, wby0nder wrote: http://www.youtube.com/watch?v=1IsaM...eature=related How about that: perpetual motion resurrected yet again. Doesn't appear to be. One notable non-perpetual motion aspect appears to be taking advantage of the temperature differential between the lower atmosphere and the upper atmosphere. That point _is_ rather clever, though whether it can be taken advantage of with sufficient efficiency is another story. If a powered compressor, driven by batteries, an IC engine or even photocells on the top surfaces, was being used to compress the gas for descent it might work, but using energy from forward motion to run the compressor sounds like perpetual motion to me. I looked again at the video and it seems that it and the fuellessflight web site have very different emphasis. The video just isn't appropriate or convincing - seems to miss the whole point of the novel aspect of the invention as described on the web site. The same scheme is being used successfully in undersea gliders for oceanic research, but these all use battery powered pumps to control buoyancy. I wasn't familiar with that until you and someone else on the thread pointed that out. It does seem to make the main point of the invention less novel.- Hide quoted text - - Show quoted text - I love novel engineering ideas, but there is a reason why the USPTO office turns down hundreds (thousands?) of patents every year. Every technology they use is plausible and does exist, but when you put them together that way, it becomes a perpetual motion machine. The USPTO is very well aware of the 2nd law of thermodynamics, and everyone that has money needs to learn it REALLY well to avoid scams like this. If only we could get everyone to accept that PM machines can't work, maybe we could get those creative energies applied to solving some of the world's problems. Jeff |
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