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  1. S

    Roadable Builds

    An airplane gets you somewhere mostly more quickly than a car. A car gets you somewhere else often where an airplane won't - while at least maintaining a serviceable state. VTOL such as a helicopter could do both and therefore to some extent could satisfy the perceived mission of the roadable...
  2. S

    Basic Configuration for a "Safe" airplane

    The Auto Gyro in the 1920-30's was thought to be the solution to overcome the dreaded stall-spin accidents that plague fixed wing aircraft. It certainly has the second worst efficiency of all flying machines (pure wingless rockets/jets as flying machines are worst). If one add wings (Gyrodyne)...
  3. S

    Van's announces highwing RV-15

    I am sure Van would have had a hard look at Sling, I see only once in the thread the name Sling was mentioned. Pity they could not get to Oshkosh because of restrictions on South African travellers inbound to USA
  4. S

    Electric Hybrid

    The hybrid version of the question have perhaps a bit less to do with the present state of battery technology than pure electric has: Why would you add electric motor(s) to the IC propulsion of your air vehicle design, given that you will incur a weight penalty? One answer is probably S/VTOL...
  5. S

    Kitty Hawk reveals Heaviside, its latest flying vehicle

    These machines move a relatively small mass of air down fast and will kick up a lot of dust and dirt in outback landings. Hopefully the landing can be fully automated by a last minute button to be pushed when committed to the landing (just before going IF) in order to avoid vertigo. Messy, but...
  6. S

    How to do what I want without using a 3LS design ?

    The concept...... for the mission.
  7. S

    How to do what I want without using a 3LS design ?

    Something like the Twin Jabiru, with the engines even closer should be close to the mission?
  8. S

    Is electric propulsion worth it?

    Depends on the mission. I would not miss that hour of gasoline if it would enable vertical takeoff.
  9. S

    Is electric propulsion worth it?

    A while back Rotax or somebody had come up with a 912 IC with an electric engine mounted on the prop shaft behind the propeller. The idea sounded excellent; IC plus electric for take-off, IC only at optimum rpm for cruise plus recharge of battery. The weight penalty of the electric engine plus 5...
  10. S

    Birdy electric motorglider

    Contra-rotating propellers would not be able to fold back for streamlining.
  11. S

    Another Ultralight-ish High Wing Idea

    The Rally 2B Micro/Ultralight had a stick from the top, It was attached leading edge of the wing above. The stick was sufficiently long enough (handgrip was about 1 m from the pivot point) to predominately give the impression of pushing/pulling the stick forward/backwards with very little feel...
  12. S

    Looking for an ISO 20’ container Flyer

    "Trailers can be 8'6" in U.S." I wondered about the 8.5 feet size limitation in the GO-Fly competition, perhaps this is it. http://goflyprize.com/
  13. S

    Opener BlackFly

    I am impressed with their achievement! Now I know why in the Go-Fly competition http://goflyprize.com/ the words "vertical take off or near vertical take off" was used, maybe someone knew! Phase 2 would be interesting!
  14. S

    Water Rocket?

    Takeoff distance of Ercoupe halved by rocket assist (JATO). Water rocket would last shorter however. https://youtu.be/2w0mKobISt4
  15. S

    Users on line dropped

    " I for one would like to know what the homebuilders in Nambia are doing..." I love Trump for putting us on the map Still a most valuable forum for the love of aeroplanes and ideas Andre
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