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Thread: Series 5 Tailplane stall

  1. #11
    Senior Member SkyPirate's Avatar
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    Default Re: Series 5 Tailplane stall

    well put JP,..we might need to check your lineage lol there might be some bernelli back there somewhere

  2. #12
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    Default Re: Series 5 Tailplane stall

    Less than the speed at which I extended them. I'm not saying I did the right
    thing, I'm simply saying what I did and what happened.

    Regards,
    Jeff

  3. #13
    Senior Member Dorsal's Avatar
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    Default Re: Series 5 Tailplane stall

    Or perhaps some Bernoulli (sorry Chase, just busting your chops)

    Jeff, Let me also say thanks for posting this, I rarely use the 2nd notch of flaps but I will be paying closer attention now.
    Last edited by Dorsal; 09-27-2011 at 08:53 AM.
    Dorsal ~~^~~
    Series 7 - Tri-Gear
    912 ULS Warp Drive

  4. #14
    Senior Member kmach's Avatar
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    Default Re: Series 5 Tailplane stall

    Quote Originally Posted by C5Engineer View Post
    Is there no placarded speeds for flap extension in a V?
    Hi,

    in my series 5 the maximum flap extension speed is listed and marked as 80 mph, I usually only apply flaps on final and below 80 mph.

    I am very glad to hear that this story has a live ending
    Kevin,

    Kitfox Outback
    912 ULS
    Airmaster AP332CTFH-WWR70W
    Summit Aircraft Wheel Skis
    C-FOXW

  5. #15
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    Default Re: Series 5 Tailplane stall

    I don't recall the exact speed, BUT it was definetly less than 100 I'd
    say in the 80-90 range. I didn't just yank the handle at cruise speed,
    this I can say for sure.

    I honestly did not think I was going that fast, as I had already pulled
    in 11 degrees, and trimmed the plane. I pushed over steeper, speed
    started to build so I pulled in 22 held some back pressure with the
    stick I honestly don't remember if I continued trimming, but I do recall
    the stick went slack, and all hell broke lose at the same time.

    Regards,
    Jeff

  6. #16
    Senior Member SkyPirate's Avatar
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    Default Re: Series 5 Tailplane stall

    What matters Jeff ,..is that you knew how to fix it and your hear to tell us about it

  7. #17
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    Default Re: Series 5 Tailplane stall

    Thanks, I'm glad to still be here too.

    Regards,
    Jeff

  8. #18
    Senior Member SkyPirate's Avatar
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    Default Re: Series 5 Tailplane stall

    that was one of those sphyncter checks that when you get on the ground ..the sky looks bluer ..the flower smell better,..ugly women look cuter ..ok I'll retract that one ugly women are still ..ugly women lol

  9. #19
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    Default Re: Series 5 Tailplane stall

    I distinctly remember thinking that this is what people feel in that last fatal
    stall spin. Then yes when I was sitting in the plane under control again
    feeling really glad to be alive.

    Regards,
    Jeff

  10. #20

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    Default Re: Series 5 Tailplane stall

    Not claiming any fancy expertise here, but from reading your account I don't think the problem was specifically due to being too fast, but rather from stumbling onto the exact combination of speed, descent angle and attitude to send the h.stab right through the extremely turbulent wake of your flaps. Once that happened, the normal downforce on the tail was lost and the pitching moment of the flapped wings took over. I suspect that the tail would have found clean air again once you were heading for the dirt even if you had done nothing. Good thing you had plenty of sky underneath you. Glad it worked out and I look forward to some factory testing on this phenomenon.

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