Originally posted by GliderGuy
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Official Freewing MiG-29 Fulcrum Twin 80mm Thread
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Originally posted by GliderGuy View PostI hit a thermal gust that almost instantly pitched the nose up.
Applied elevator....nothing / applied power....nose not dropping. Recognized as being in a deep stall, so chopped the throttle, nose dropped, then eased in the power below a tree line which was hiding the MiG.
Eased in the back stick and she rose above the tree tops....flying as if nothing was amiss. Whew!
It allows to do post-stall aerobatics without vectored thrust (as demonstrated) but that's not quite how the jet is supposed to be. :/
Results in you needing to fight the jet at many points where you really shouldn't.
Originally posted by Hugh Wiedman View PostEspectacular! Volando asi quien necesita la TV.
Originally posted by Hugh Wiedman View PostLooks like it flew even better with the lighter packs and CG further back, landed so smooth at what seemed the perfect AOA. Your using Tailerons, no?
Originally posted by Hugh Wiedman View PostAnd why does it always seem that when you fly, it's nice and cool out and that wind sock is straight down, that's just not fair!
It's not that I never fly in windy conditions, but I do take much less 'risks' when performing maneuvers if the weather isn't helping, so in order to record videos, which clearly benefit from the jets flying lower and closer, I favour no-wind at all. On the other hand, wind (as long as it is reasonably aligned with runway and not extremely turbulent) usually helps me bring down the jets more easily without overshooting.
Originally posted by SanExup View PostAirguardian Is your runway more gravel (tiny rocks) or dirt (micro rocks)? Does the Mig inhale the runway at all?
The Eurofighter didn't suck it up though, as the intake was ahead of all the landing gear and it had no cheaters.
The MiG seems to fare much better with it though, as it sits taller compared to my other jets.
Originally posted by SanExup View PostEdited: I see the photos now, it's kind of in between what I'm calling gravel and dirt. The nose gear is so close to the front intakes. Do any of your jets vacuum it up?
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Originally posted by GliderGuy View PostI hit a thermal gust that almost instantly pitched the nose up.
Applied elevator....nothing / applied power....nose not dropping. Recognized as being in a deep stall, so chopped the throttle, nose dropped, then eased in the power below a tree line which was hiding the MiG.
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Originally posted by radfordc View Post
That sounds familiar. Probably a better chance of recovery if you have more than 20 feet of altitude.
https://youtu.be/l22ftmf2qK8
Repaired OK? Hope so.
Perhaps keeping full power and Saber dancing to the ground might have been less of an impact. Hard to say.
-GG
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Originally posted by Airguardian View Post
Yep, the MiG does that. Not a fan of how Freewing/MRC designed the stock thrustline on this one.
It allows to do post-stall aerobatics without vectored thrust (as demonstrated) but that's not quite how the jet is supposed to be. :/
There's clearly a complex set of compromises afoot in the design of the battery area, ability to shift CG aft, elevator trim and thrust line. The true test is probably flying smaller packs and a more extreme CG, but going too far aft probably won't help with stall recovery either!
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mshagg's implementation of the 3DP TV nozzles for this MiG.
RC Groups - the most active Radio Control model community: electric and fuel rc airplanes,rc helis,rc boats and rc cars. Features discussion forums, blogs, videos and classifieds.
Link to the STL files:
This is a nozzle to replace the stock foam one in the Freewing MiG29 with VT. The foam nozzle is just held on with tacky adhesive and can be removed without damage if you're careful. There are two versions, one with the inner petals extended beyond the outer ones, and one where they are not. Take your pick. Print with minimal infill if weight is a problem.
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Originally posted by radfordc View Post
That sounds familiar. Probably a better chance of recovery if you have more than 20 feet of altitude.
Anyway, I was just curious what learning you gleaned from this (assuming it was your plane). I was hoping to learn the same lesson a bit more cheaply :)
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Originally posted by Gringotuerto View Post
Anyway, I was just curious what learning you gleaned from this (assuming it was your plane). I was hoping to learn the same lesson a bit more cheaply :)
But, I have experienced the deep stall a couple of times not on purpose. I’ve done it many times ON PURPOSE for practice.
1) When I had a few flights and was high....AND the deep stall was still “new” to the pilots. Got into it by doing a vertical climb and almost didn’t recover. It was WAY OVER THERE AND DOWN LOW when I got it flying. Range check at a distance down low = done!
2) The thermal edge gust (no gyro) that pitched the nose up yesterday...almost instantaneously pitch up....while I was about 200 ft on base.
#1 recovery was by luck...now I know what to do.
#2 recovery was successful....but more of a challenge because the MiG descended below a tree line. I couldn’t see it. Recovery was by instinctive control inputs.
So, watch Airguardian’s excellent videos. He shows how the recovery is done....expertly. Cheapest training you’ll ever get on the deep stall recovery.
Chopping power is the ONLY way to get the nose down and the MiG flying again. CAUTION ....ALTITUDE IS REQUIRED!!!
-GG
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As far as design-wise goes, the lesson is to design jets with a proper thrustline, lol.
I also had a scare myself the other day when I landed off-road, hit a bump and went back into the air, pretty sharp.
Since I was going slow-ish, going full-throttle may have backflipped the jet so I added pitch-down correction and slowly got the throttle back up, so the jet could gain speed and not getting locked in high alpha. This allowed me to go around and land normally.
Originally posted by GliderGuy View PostChopping power is the ONLY way to get the nose down and the MiG flying again.
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So sorry to see this. The deep stall is so dangerous with this. The only way out (other than not getting into the situation) would be to have TVs.
Originally posted by radfordc View Post
That sounds familiar. Probably a better chance of recovery if you have more than 20 feet of altitude.
https://youtu.be/l22ftmf2qK8
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