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At 06:36 17 May 2018, Bruce Hoult wrote:
On Thursday, May 17, 2018 at 1:43:09 PM UTC+12, Richard McLean wrote: On Wednesday, 16 May 2018 22:21:48 UTC+8, Matt Herron Jr. wrote: from my perspective, reducing airbrakes at 100' changes your glide slop= e and therefor aim point half way through final. So do you give up your in= itial aim point at 100', or do you have two aim points? Either option seem= s like a bad idea for students. =20 Airbrake deployment should be a driven variable to maintain a correct a= pproach, not the other way around. =20 Additionally, a shallower approach for the last 100' means you are way = more susceptible to wind shear, as you don't have much "extra" glide to rec= over by closing the airbrakes. =20 To me, it sounds like the tail strike problem is in the flair, not the = use of airbrakes. =20 Hi Matt, yes you give up the original aim point. This isn't ideal but bet= ter than damaging the aircraft? The debrief can cover off the reasons. Lots= of bad landings are the result of not accepting that you stuffed up your o= riginal aiming point & concentrating on the actual landing. I'd think if you were so high turning final that you can't get back on to a= standard half brake approach by, say, 100m before crossing the fence then = you've well and truly stuffed up the circuit. Especially in something with = airbrakes as powerful as a DG1000 or Grob. You definitely should never be p= lanning to carry full brake all the way down the approach ... that leave no= thing in reserve for the unexpected. Trick one I have not flown the DG1001 neo yet but I have quite a lot of time in the original DG1000,you need a step to get people in,if that is the angle for 2point landing them the newer versions going to land tail wheel first . I have done hundreds of trial flights in an early DG500 that everyone said was "over braked" ,in fact it could be .But as all I wanted was to get the punters down safe without a hard landing I tend to add 5kns and gently fly it on, on the main wheel. The trouble with that is its not the correct method to teach landing to pupils. As I said tricky My advice would be to buy a K21 or Duo xl ,they fly as you would expect. |
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