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January 23, 2014 at 6:49 pm in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1875409

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I know..it would need to have detachable nose made of carbon to get it pressurized and a man in.

Perlan II has pressirization up to 90 000 ft and it is a glider.

http://static.guim.co.uk/sys-images/Guardian/Pix/commercial/2013/2/4/1359994557060/Platypus-wall-poster-001.jpg

January 22, 2014 at 5:38 pm in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1875675

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Measures corrected !

SPECS INDICATED…AND 2 PASSENGERS.

January 22, 2014 at 12:12 pm in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1875682

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Measures corrected !

January 22, 2014 at 11:16 am in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1875706

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Here are the basics in one man sized plane..quite a lot of punch for the weight still ?

It is a pusher prop with 2 x 10 kw engines….and uses 30-50% efficient solar panels ( top notch ).

January 22, 2014 at 11:13 am in reply to: God,Allah,Buddha,whatever you want to call it doesn't exist #1875716

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What is ponzi anyway ?

January 21, 2014 at 6:45 pm in reply to: God,Allah,Buddha,whatever you want to call it doesn't exist #1875814

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Ah so se are still in the realms of fiction!!:)

Yes they are fiction…but so was Jules Verne about the moon voyage !

January 21, 2014 at 6:15 pm in reply to: God,Allah,Buddha,whatever you want to call it doesn't exist #1875825

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Intriguing. But the question is verging on the metaphysical. Why? might be a better question.
Nothing I suppose is the answer. Corusant??

Coruscant; http://starwars.wikia.com/wiki/Coruscant

January 21, 2014 at 4:53 pm in reply to: God,Allah,Buddha,whatever you want to call it doesn't exist #1875854

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Let’s reverse the question.

What would it take for you to believe there is a God ?

If we made a manned journey to Alfa Centauri and found out that Corusant actually exists there.

Would that please you and make you say…Moses was right…there is a ( judeo-christian ) God ?

January 19, 2014 at 10:40 am in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1876385

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I redrew the mother ship with 130 m spanning and 50 000 mtow to carry a tad bigger space ship into orbit.

BTW: Which Star Wars caracter are you ?

I was Obi-Wan.

http://www.zimbio.com/quiz/Ukldm8Pi5Ub/Star+Wars+Character/result/2nWJJiPNR1D

January 16, 2014 at 4:43 pm in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1877201

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After some further converstions at two space flight site I have this for you;

I’ll do some math for you.

L=½pv^2ACl = > ½x0.0000009kg/m3x38098384x1290x3 = 66348 N ….witch means an object with cl3 flying at 140 km can weigh 6635 kilos ( with 1290 m2 wing area )…now check the centrifugal force in 140km….

12 700 kg (weight with empty fuel in Solar Eagle at 140 km) x a ( a= v^2/r ) = 12700×5.7 = 72843 N …..that means that the plane is forced into orbit with force of 72843 N ie 7284 kg can be reduced from the weight of 12700…so Solar Eagle with Star Eagle are still cimbing at 140 km !

The Solar Eagle can theoretically fly really near the LEO at 160 km altitude…making the space flite very economical since carrying a space ship capable to moon landing at 1/240th of the fuel used in APOLLO 11.

January 10, 2014 at 1:19 pm in reply to: General Discussion #226944

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Tuned specs for weight and power here.

January 10, 2014 at 1:19 pm in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1832907

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Tuned specs for weight and power here.

January 9, 2014 at 9:07 pm in reply to: General Discussion #227210

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This sounds a bit strange…but I calculated that the ship has enough wing area and thrust when carrying a space craft with a rocket engine after flying to 25 km with solar power that it could hit 17 000 km/h at 120 km altitude.

Compared to Apollo mission it would save rocket fuel 11900 barrels per flight.

http://quotes.wsj.com/FUEL

January 9, 2014 at 9:07 pm in reply to: Could solar powered passenger planes replace Zeppelin type air ships in the future ? #1832989

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This sounds a bit strange…but I calculated that the ship has enough wing area and thrust when carrying a space craft with a rocket engine after flying to 25 km with solar power that it could hit 17 000 km/h at 120 km altitude.

Compared to Apollo mission it would save rocket fuel 11900 barrels per flight.

http://quotes.wsj.com/FUEL

January 5, 2014 at 11:14 am in reply to: General Discussion #228882

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Here is some math to prove that a carrier can lift 17000 kg to 80 km.

——-

Here is how to define the speed of 8000 km/h for the craft at 80 km; http://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line

Take lift equation… ½ x p x v^2 x A x Cl = 0,5 x 0.0001846 kg/m3 x 4937777 m/s x 1200 m2 x 0,5 = 273454 N = ~27000 kg ( 1 % less gravity )

It says 27 000 kg ship doing 8000 km/h with 1200 m2 wing area stays airborne at 80 km when Cl is 0,5 !

Air densities; http://www.engineeringtoolbox.com/standard-atmosphere-d_604.html
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