A few small jets for the world elite and their big families would be enough.
The few millions TV watchers remaining from the depopulation, indoctrinated and impoverished, will applaud to the passing jets in the ground. 2014-07-14 17:51 GMT+02:00, John Clark <johnkcl...@gmail.com>: > On Sat, Jul 12, 2014 at 8:50 PM, Russell Standish <li...@hpcoders.com.au> > wrote: > >> I saw that webpage, but it didn't quote anything, nor give any form of >> justification. [...] I'm thinking that the velocity factor needed to >> compute maximum power >> ought to perhaps be exhaust gas velocity anyway. It seems likely to me >> that aircraft engines should be able to increase exhaust velocity and >> correspondingly reduce thrust as velocity increases, keeping power >> constant >> > > You don't need to consider any of that to see if the figure I used, 140 > megawatts of average power, is in the right ballpark needed to keep a 747 > in the air. At takeoff a 747 can hold 60,000 gallons of gasoline and stay > in the air for about 12 hours, so that's about 5000 gallons a hour. One > gallon of gas contains 34,000 watt hours of energy. So 34,000 watt hours > /gallon * 5000 gallons/hour = 170 megawatts. > > So it looks like my estimate that if you want to go with solar then a > factory that covered 6 square miles of the Earth’s surface would be needed > to keep just one 747 in the air may have been a a bit on the low side. > > John K Clark > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to everything-list+unsubscr...@googlegroups.com. > To post to this group, send email to everything-list@googlegroups.com. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/d/optout. > -- Alberto. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
