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  1. D

    Static/mass balanced or not

    I sent you a PM, however, decided to continue here to have more opinions. What makes the direction to be different when talking about flaps and not about ailerons? They same to be affected by the same conditions. You mean exceeding Vfe won't brake the flaps due to high airspeed airflow pushing...
  2. D

    Static/mass balanced or not

    Flew some aricrafts with negative positions. How did you find that effect changes in terms of speed? I always thought and found that at HIGHER speeds they require MORE force to pull them into neutral positive, while -7, -5 degrees (up) goes a EASIER, not vice versa, that was my point. Also, why...
  3. D

    Static/mass balanced or not

    I'm sorry, but it seems no sense. That two statements oppose and should not. If ailerons deflect upwards as you slow down, the same thing should happen regarding flaps, but it doesn't. I didn't reply cause I expected an answer from Head in the clouds, I hope he will explain his assumptions to...
  4. D

    Static/mass balanced or not

    And what about the flaps analogy I wrote above? I figure out flaps are usually the same, cambered surface and even not being so, why do they behave differently in the same conditions?
  5. D

    Static/mass balanced or not

    To be honest, I'm not convinced that the ailerons might deflect upwards as you slow down, that would mean that the change in slipstream you mentioned has a greater effect than the decreased pressure (due to low airspeed). If so, as an analogy, the flaps would be harder to deflect at low speeds...
  6. D

    Static/mass balanced or not

    Ok, thank you so much for your detailed technical post, even if I didn't understand it at all (I wasn't expecting to, because don't have all that knowledge) I will keep reading on it and searching for useful articles on the Internet. What surprised me is how did you figure out that both...
  7. D

    Static/mass balanced or not

    Even it doesn't make the main subject, I found some of those crashed were factory-built, some were kits. Got it, this post was entirely close of what I was expecting since my first question. Considering we were talking generally about flutter in this paragraph, I have some questions, I hope...
  8. D

    Static/mass balanced or not

    Yes, investigating the consequences might have a control cable failure in some of the airplanes I use to fly. That's all. I've no specific interest in Zodiac 601 crashes or others, if that's the point. You made me laugh. Anyway, even if it doesn't matter, I must say that I'm living in...
  9. D

    Static/mass balanced or not

    All kinds of malfunction, but when I said I referred to cable failures. LATER EDIT: I agree, it is obvious that pilot error and engine failure are some of the most common crash causes. We were basically talking about mechanical issues and I think an engine failure wouldn't lead to an...
  10. D

    Static/mass balanced or not

    Unlike FAR 23, there are no requirements for cable specifications on LSA aircrafts, so they there is no warranty they are really so strong as you said. LATER EDIT: I can't recall any other mechanical failure which can lead to inflight breakup, of course, excepting itself structural failure...
  11. D

    Static/mass balanced or not

    http://www.homebuiltairplanes.com/forums/attachment.php?attachmentid=21603 As I said, I just can't rely on this. I’m really not satisfied relying on cables since there are old pilots who had even more than one occurence regarding control cable malfunction over years. For example? Like what...
  12. D

    Static/mass balanced or not

    So do I, but if he asked, I wondered about it. I took your question more as a joke. :grin: Anyway, in that case, "If you take your feet off the pedals in flight it is the same as no cable connection", I figure out the cable doesn't play a big role on stiffness, so it's less of an issue, I do...
  13. D

    Static/mass balanced or not

    NTSB reports, FAA reports, Airworthiness Directives, articles and even personal experiences from old pilots. They covered primary flight controls, but there were also some flaps failures reports, but as you said, they are usually a non-event. BTW, are flaps prone to flutter?
  14. D

    Static/mass balanced or not

    It was a mild phrase and I expressed so as not to interpret the purpose of our discussion is none other than a constructive one, but the statement is based on statistics. Just of curiosity, search and see how many incidents reports are on flight control failures and how many inflight breakups...
  15. D

    Static/mass balanced or not

    In this case they might have the same potential problem. I figure out two possibilities: they were tested and there is no problem OR they don't meet the PART 23 FAR certification criteria, but I hope the first one is the answer. I thought FAR 23 certified aircraft are designed (and...
  16. D

    Static/mass balanced or not

    Ok, it's possible I made some erroneous assumptions. I'll try to be more precise. I see there are some emergency landings where pilots in standard certificated light airplanes lost one surface control (e.g. aileron(s) ) due to cable failure and they made a safe landing using the remaining...
  17. D

    Static/mass balanced or not

    They were not mass balanced before applying upgrades due to crashes. You mean they flutter even after they were upgraded and mass balanced? Well, you mean the airframe or the structure or the flight control system itself, exactly which part lacked adequate stiffness? The aileron surface...
  18. D

    Static/mass balanced or not

    This the reason. We talked in another thread that many LSA are not mass-balanced and in a cable failure, disconnected surface, it might flutter even at low speeds. This makes me curious to know which are mass-balanced and which not. The owner knows nothing about this subject and I can't contact...
  19. D

    Static/mass balanced or not

    Thank you for your answers guys, I really appreciate, but still not clear to me. So, visually you can't say if it's balanced or not because it doesn't have mass weights outside. I looked at hinge, but I can't see if it has leading edge weights and I can't disconnect the aileron from the...
  20. D

    Static/mass balanced or not

    If some one can tell me details about aileron connection on this aircraft, I will post some photos: Are these mass balance weights or do they have any effect on aileron balance? Basically, can you figure out visually if these ailerons are mass balanced or not? They are fabric...
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