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  1. Retroflyer_S

    Electric Power

    Yes MEP might be needed if the weight is over 70 kg empty. Skylon is a jet/rocket ship that now has got funding...it has similarly the engines at the tip of the wings. This could be built under 10 000 usd....if outa wood. Engines are 80 euros each ( ...could the batteries be in the wings..near...
  2. Retroflyer_S

    Electric Power

    I have decided not to reveal the lifting fuselage twin design yet ( as I pursue a patent for it ), but I give you the SKYLON II design to ponder. It is inspired by the Roter Vogel ( 2.75 hp motorized Pelikan glider ) and Etlantic to promote the electric propulsion cause. The engines are 600...
  3. Retroflyer_S

    What ideas/thoughts does this create in you ?

    Indeed...even a 50 CC model engine produces more....I wonder why. 50CC DA Airplane Engine
  4. Retroflyer_S

    What ideas/thoughts does this create in you ?

    WW I era motorcycle engines of 350 cc displacement possibly produced much less horsepowers, but I wonder if these new ones really produce 14 kW; Chinese Lifan 300 350cc 3 Wheeler Motorcycle Engine - Buy 3 Wheeler Motorcycle Engine,Chinese Motorcycle Engine,350cc Lifan Motorcycle Engine Product...
  5. Retroflyer_S

    What ideas/thoughts does this create in you ?

    So 6 cm stoke is long..how long is it an a scooter of 50 cc ?
  6. Retroflyer_S

    Perlan first flight video

    Awesome project; https://www.youtube.com/watch?v=SK16tCHToks
  7. Retroflyer_S

    What ideas/thoughts does this create in you ?

    That is 2 kW they had on this Pelikan glider when engine fitted in.
  8. Retroflyer_S

    What ideas/thoughts does this create in you ?

    The Douglas engine ( 350 cc pre 1925 ) they had produced only 2.75 hp if new and in order. https://en.wikipedia.org/wiki/Douglas_(motorcycles)
  9. Retroflyer_S

    What ideas/thoughts does this create in you ?

    Here is the source; http://www.fzt.haw-hamburg.de/pers/Scholz/dglr/hh/text_2010_04_15_Schnellflugdesign.pdf
  10. Retroflyer_S

    Electric Power

    Electric flight has been pursued a lot these days....also to get the carbon emissions down. Fly Electric: The Aircraft of the Future Takes Flight Similar trends are also in housing; http://traveller.easyjet.com/features/2015/11/how-to-go-off-grid-in-style#qF1VMWezC2PvH5F7.97
  11. Retroflyer_S

    What ideas/thoughts does this create in you ?

    I found this Heinkels chief designers early work...Roter Vogel. Flew with very "weak" engine. Doesn't it look like future design back in 1922 ?
  12. Retroflyer_S

    Electric Power

    Well I have the data on the other computer so I have to check the image next week at the latest. I just runned the virus check again. I am impressed...and I haven't even been on this computer after last nites virus check.
  13. Retroflyer_S

    Electric Power

    Yes it could be insightful perhaps. I have to think what kinda image I am spreading as there were 386 viruses after I announced the design ( lifing body + prone position ) in this forum about a month ago. So it is possible that about half a dozen intelligent agencies already know it.
  14. Retroflyer_S

    NACA 23015 or equivalent

    Landing 30 mph Cl 1.4 and 120 KTS at 30 000 ft at around .25 Cl ( for M16 model ). See I have envisioned 4 of these....M10 ( 10 metre spanning prone position single ) M12 ( 2 seater tandem ) M16 ( 4 seater ) and M40 ( 30 seater passenger ). All have around 3.5-4.0 kW solar power at sunshine...
  15. Retroflyer_S

    Riblett GA 35A 415 Airfoil

    That is very nice looking foil; ZODIAC XL Design & Construction - WINGS - Kit Plane Here in action; https://www.youtube.com/watch?v=2tsj7ZAaVFQ
  16. Retroflyer_S

    NACA 23015 or equivalent

    It may have a slight nose down attitude at high speed...and few degs up at take off and landing yes.
  17. Retroflyer_S

    NACA 23015 or equivalent

    Thanks for the input Norman ! Well maybe the idea of mine is different of what you imagine of a lifting body I have.....it is a strongly tapered...the lifting body..having same 23012 at the tip as the hersey bar section in the root ! 7 to 8 AoA is irrelevant...since the plane has so excessive...
  18. Retroflyer_S

    NACA 23015 or equivalent

    The short spanned lifting body is kinda like a root for the thinner hersey bar wing....is there something suspicious in this kinda approach ?
  19. Retroflyer_S

    Why does this look like an airfoil?

    I had a similar dream last nite....dr. Eckener and Barnaby Wainfan had sat down and discussed the problem of not being able to make aeroplanes lite enough to be efficiently moved with solar and battery power. https://en.wikipedia.org/wiki/Hugo_Eckener...
  20. Retroflyer_S

    Electric Power

    Yes...having studied in Georgia Tech and highschool in Newport, RI....I do tend to use the name Jake Backland sometimes ( name translated into english )....my ex-girlfriend called me frequently as Jake. But seriously...don't tell anyone. In my facebook account I am in Oulu, Wisconsin ( which is...
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