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  1. G

    Drivetrain Power Loss

    Well, you are assuming that said Harley rider is riding full throttle the whole time. If he were the result may very well be the one that you describe.
  2. G

    Drivetrain Power Loss

    Agreed, noise though is not very energy dense. The amount of energy dissipated as noise (which eventually becomes heat) is vanishingly small compared to the frictional heat dissipation.
  3. G

    Drivetrain Power Loss

    Ok, grand. How do the losses that are not heat dissipate? Why dont harleys overheat? Really? Is this a serious question? They don´t produce much power so even though the losses are a substantial fraction of the energy in the fuel the engine reaches equilibrium with the environment. The fact...
  4. G

    Drivetrain Power Loss

    I´ll have a go at it. Just read through the thread and it ought to be abundantly clear to any observer that there are experts here with many years of experience in fields that are relevant to the topic. The topic being drive train losses. Great. What are they? Power applied to a drive train...
  5. G

    Lets talk about diesels.

    Speaking of future "gone dark" projects... If anyone has more info on this outfit it would probably be interesting to followers of this thread. Some pretty lofty promises and some nice animations for those that are willing to follow the link is promised. http://www.ac-aero.com/technologies/
  6. G

    Small single seat 3 surface concept

    I think the concept definately shows promise as is evidenced by the Avanti. Obviously this is a highly optimised commercially produced airframe. It provides close jet performance with prop fuel flow. Cited from Piaggio´s PR department so it has to be true. My very limited research on the topic...
  7. G

    are triple tandem wings the future ?

    Haha, thanks for the reading tip and your efforts to "clarify" things for me. You might be right though, probably time for a re-read, after all it has been years!
  8. G

    are triple tandem wings the future ?

    You can still put trippel slotted fowlers and even slats on the main wing to get massive amounts of C/L increase if you want, and consider it worth the complexity. Gearing the flaps or using less efficient flaps on the canard will balance out the change in pitching moment (you will need less...
  9. G

    are triple tandem wings the future ?

    Im not quite sure that is what turner proposed. Maybe I reading between the lines and I don´t want to put words in someones mouth, but as I see it the aircraft needs to be optimised for cruise flight. Lowest possible drag at that speed. Does that mean a lifting H-stab or a very near neutral...
  10. G

    are triple tandem wings the future ?

    Bigger engines? Correct me if I am wrong but I was under the impression that both use the PT6-A 42 and 66 respectively, both rated at 850 shp. Higher landing speed, ok, but how much? Reduce the wing area to get the same landing speed in the king air, will that give you close to 100 kt more max...
  11. G

    are triple tandem wings the future ?

    To answer the question "why" that has been posed once or twice in this thread firstly I would just like to compare two similar aircraft with different planforms. The Beechcraft 200 and the Avanti have similar engines and MTOW. The max level speed of the avanti is about 100 kt faster, and...
  12. G

    FUTURE AIRCRAFT ENGINE?

    There is a variant of that concept in development (production?). It´s called the gemini 100. It differs slightly in having two crankshafts but the general concept is the same. Gemini Engine
  13. G

    Jurca MJ51 Sperocco performance figures

    Hi all! I am looking for a suitable project and the MJ51 caught my eye. Now, I can´t seem to find any performance figures for the aircraft. Are there any such figures confirmed by flight tests to the best knowlege of this community? There is not much info on the company web site, but plenty to...
  14. G

    Polen Special, anyone?

    I just wanted to bring up the Nexus Mustang in relation to this discussion. Doesnt borrow all that much from the polen other than it being a very clean aircraft. Being a two seater tandem it is aimed at a slightly larger fraction of the market than the single seaters. And being a tandem I...
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