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July 28, 2017 at 6:30 pm in reply to: Electric fighter aeroplane ? #2154301

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Then we can comfortably agree that Sopwith Triplane was a drone ?

https://www.youtube.com/watch?v=PIdtRZK3YO4

July 28, 2017 at 5:32 pm in reply to: Electric fighter aeroplane ? #2154309

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Kurt Tank high altitude interceptor is just an example what high flying does to the speed.

https://www.youtube.com/watch?v=UTUha-wVsq0

July 28, 2017 at 5:26 pm in reply to: Electric fighter aeroplane ? #2154313

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Spudman WP…you are missing the point…no aircraft with GE F414-400 can cruise at 30 km where Helios flew….with ancient solar panels etc.

July 28, 2017 at 4:18 pm in reply to: Electric fighter aeroplane ? #2154321

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Top speed of the SI II is 140 km/h…but as it cruises just 1/4 of the max engine power it goes 50 mph. It cannot even even utilize the whole solar power it gets from the panels as its engines are rated so low….let alone add any from the batteries in addition to the solar current.

July 28, 2017 at 3:44 pm in reply to: Electric fighter aeroplane ? #2154329

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Yes Spudman…I have done the research and that is why I am confident to pronounce such a bald statement.

This was 50+ km/h faster than P-51D; https://en.wikipedia.org/wiki/Focke-Wulf_Ta_152

It flew only at 15 km altitude.

Helios from NASA flew 7 x faster at 30 km than in sea level.

Furthermore the Solar Impulse II is able to fly 2 x faster than Solar Impulse I….with ridiculously low power carrying 600 kg batteries for night flying.

July 28, 2017 at 8:02 am in reply to: Electric fighter aeroplane ? #2154359

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No Finny !

I quite agree with the aforecommented persons with the low energy density of the electric propulsion. OTOH there is a way to drop down the wingloading and thus reach quite high speeds at high using solar energy with battery power…very high that is ( and I don’t mean “high” induced by drugs ).

Such aerodynes are merely observation platforms of some kind or perhaps just airborne drones or satellite substituting links…..and so forth…in near future…perhaps even passenger airliners of some sort.

May 23, 2017 at 5:18 pm in reply to: General Discussion #237132

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My condolences for the families of these innocent victims.

May 8, 2017 at 4:21 pm in reply to: General Discussion #239453

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Here is the actual space ship. Braking system idea.

May 7, 2017 at 5:08 pm in reply to: General Discussion #239653

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Then grinding again….elevator moved back and nose shortened.

Who wants to see the side view ?

May 7, 2017 at 10:29 am in reply to: General Discussion #239796

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Sharpening the concept a bit.

May 7, 2017 at 6:12 am in reply to: General Discussion #239813

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Igniting…in english…if you insist.

May 7, 2017 at 6:11 am in reply to: General Discussion #239818

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This enables 35 km ( 110 000 ft ) drop altitude. Thus M2 before inginting the engines.

May 6, 2017 at 11:24 am in reply to: General Discussion #239856

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Here is the engine that it needs 18 pieces.

Siemens 260 kW.

https://en.wikipedia.org/wiki/Spaceplane

May 6, 2017 at 5:40 am in reply to: General Discussion #239986

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Stars are closing us fast with DS¤G; https://en.wikipedia.org/wiki/Dual-Stage_4-Grid

ISP is 21 500 s !!!!

Using DS4G + the solar panels on my system and the new smaller rocket inside the Solar Eagle the delta -v can be even 206 -250 depending how much Xenon you can afford…heck even1000 km/s ( if as much volume as normal rocket fuel takes as liquid xenon is 16,4 x more dense).

Yes yes yes ! We are to chasing the ” impossible “. ( Proxima Centaur system )

May 5, 2017 at 4:46 pm in reply to: General Discussion #240018

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To make that design soar with less energy it was tweaked like this.
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