At 09:41 am 16/05/2005 -0700, you wrote: >From: "Ron Wormus" > >> I'm not a aeronautical engineer but I have spent a lot of time >> flying at high altitudes. 20km ~ 65,000 ft and propellers just >> don't work up there (pure jets & ram jets not fans are best). >> Also, even if they did I don't see a "zero ground speed" as >> being possible at those altitudes (airfoils need dense air or >> speed). > > >Oh well, another flash-in-the-pan idea bites the dust ! > > >BTW, Ron, I had written a response to your "machines don't think" >post but it was bumped because it was too long, probably. >Actually, I had enclosed in that post a whole chapter of an old >manuscript I had written some time ago, not thinking about the >size limit for posts on vortex, which I think is 40 kb - is that >correct? > >Maybe I will reword some of the content. > >Jones
Hows about an executive summary? Frank

