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I have an MGL efis and I fly 720. I appreciate all the responses .I am looking up each system mentioned . I have to have one now that I have seen them on u-tube.
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I flew for many hours with the Vans stall warning vane then removed it and replaced it with the Dynon AoA as part of an IFR upgrade.
My home airstrip is short and sometimes marginal so slow, precise approaches are required. I suppose that the AoA may give slightly earlier warning of an impending stall but IMHO the AoA gives me no extra benefit during the approach over the (correctly calibrated) simple vane stall warning. Fin 9A |
You do not "have" to have the combo Dynon pitot to get AOA on the Dynon. The RV12 world found a $10 substitute that works great. Read this thread, particularly starting page 2. I used the inflation needle, others found a rivet worked as well.
http://www.vansairforce.com/communit...ad.php?t=34040 Picture inslalled here: http://www.vansairforce.com/communit...&postcount=183 The great thing about the Dynon is the AUDIBLE AOA indication in your headset. Increasing frequency at higher angles. You can ride the right beeping frequency all the way to the runway threshold. You don't want to be looking down at the Dynon screen when going into a 1260 foot strip... If you get a different AOA, be sure it has audible. |
I will caveat my original comment with the fact that the AOA is only as good as the calibration, and that is very important.
The Dynon uses a series of increasingly interesting manoeuvres culminating with full power stalls. Now, with my mature Brother squealing like a girl as I am eaking the last drop out of the poor, complaining airplane, we finished the calibration.....:rolleyes: Full power stalls in an RV are quite interesting. I digress - what you end up with is a superb tool to help you in all areas of flight, not just approach. This year, biennial flight revues in the UK are featuring crosswind stalls in the pattern - distraction during the climb out can be as dangerous as the base turn/final situation. It is interesting to watch the AOA as you are doing aeros - it gives you a real impression as to what is happening - particularly on the back side of looping figures - sadly the statistics show too many accidents where guys pull too hard on the back side of a loop and flick out. I will try and set up my GoPro soon and see if we can get some footage. |
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I have a friend who flies a Starduster bipe who pulled too hard out of a loop, and regained consciousness after losing about 3000 ft of altitude. Lucky guy! |
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Doug,
No - we have an MT 3 blade prop which works well at low speed. We ended up at a very high nose up, still flying and fully controllable - it was insane. I guess when it stalled, we must have been 30? nose up. No wing drop, just a rather large nose drop as I took the power off. |
You do have one
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If you trim pitch neutral for cruise, then do not trim for slow flight the pressure on your fingers holding the stick will be in a more feel able/tactile relationship to your AOA increasing at landing speeds. The burble and buffet as the wing approaches stall is easier to feel. No doubt I will get roasted on both points. |
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