What is it about landing at Yechon?
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Is there something unusual or buggy about landing at Yechon on runway 28? I can land good every where else, but 9 times out of 10, I am loosing it right before touchdown at Yechon. I loose speed, lift, AOA - it all goes to s***. This has happened more than a dozen times as I have one of my training TEs departing and returning at Yechon. My landing technique is good - the landing lesson (3) is perfected and I can land normally at other fields.
Anyone else experienced bad landings at this field?
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@jcook maybe is because the wind conditions, some windshear or a change in the wind pattern
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@jcook said in What is it about landing at Yechon?:
Is there something unusual or buggy about landing at Yechon on runway 28? I can land good every where else, but 9 times out of 10, I am loosing it right before touchdown at Yechon. I loose speed, lift, AOA - it all goes to s***. This has happened more than a dozen times as I have one of my training TEs departing and returning at Yechon. My landing technique is good - the landing lesson (3) is perfected and I can land normally at other fields.
Anyone else experienced bad landings at this field?
given the evidence, there is nothing left but to affirm that what is between the chair and the sitck is damaged
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@VDK I will try modifying the winds. There are some significant elevations in the area - maybe BMS is modelling that type of wind shear.
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@jcook the airbase SW of Kotar range? haven’t noticed any problem there. is there a particular block of aircraft, you’ve been flying out of there? or some mission profile, that has you landing heavier or higher-drag than you’re recently accustomed? (eg. the “GP Bombs” tutorial has us landing there, with a very high-drag but low-weight configuration)
I do feel like I have my own little bermuda-triangle… the airport SE of Kunsan… Gwangju rwy 37. I “feel” all the things you describe, when landing there. same plane as TR#3, one can literally just turn around and fly there instead…
it’s a long runway, plenty of margin for error – I don’t crash, but my landings are always clunky, heavy and awkward, compared to Kunsan. It’s uncanny.
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@airtex2019 Its almost like the normal rules don’t apply for me at Yechon, everything that normally works in a landing- just doesn’t.
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@VIPER-0 said in What is it about landing at Yechon?:
@jcook said in What is it about landing at Yechon?:
Is there something unusual or buggy about landing at Yechon on runway 28? I can land good every where else, but 9 times out of 10, I am loosing it right before touchdown at Yechon. I loose speed, lift, AOA - it all goes to s***. This has happened more than a dozen times as I have one of my training TEs departing and returning at Yechon. My landing technique is good - the landing lesson (3) is perfected and I can land normally at other fields.
Anyone else experienced bad landings at this field?
given the evidence, there is nothing left but to affirm that what is between the chair and the sitck is damaged
No thanks Zero. What a stupid comment you’ve made. There’s always at least one in the BMS forums.
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@jcook said:
Its almost like the normal rules don’t apply for me at Yechon, everything that normally works in a landing- just doesn’t.
Cue Twilight Zone Theme…
Doo-do-do-doo Doo-do-do-doo.
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@jcook said in What is it about landing at Yechon?:
@VIPER-0 said in What is it about landing at Yechon?:
@jcook said in What is it about landing at Yechon?:
Is there something unusual or buggy about landing at Yechon on runway 28? I can land good every where else, but 9 times out of 10, I am loosing it right before touchdown at Yechon. I loose speed, lift, AOA - it all goes to s***. This has happened more than a dozen times as I have one of my training TEs departing and returning at Yechon. My landing technique is good - the landing lesson (3) is perfected and I can land normally at other fields.
Anyone else experienced bad landings at this field?
given the evidence, there is nothing left but to affirm that what is between the chair and the sitck is damaged
No thanks Zero. What a stupid comment you’ve made. There’s always at least one in the BMS forums.
I am not offended by being called stupid, I have been called everything in this life. I know how to treat people with a complex like you who can’t tolerate even the slightest joke to make you laugh. Maybe he’s stupid if he knows how to land and fly with a keyboard.
Regards and do not crash, I teach if you want. -
@jcook Maybe try recording a video of landing there and at other places?
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an ACMI might tell us what we need to know … so we can solve this mystery
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@jcook said:
No thanks Zero. What a stupid comment you’ve made. There’s always at least one in the BMS forums.
He was only joking, dude.
His posts are always friendly.
As are yours.
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@jcook If you don’t have TACVIEW, i’d highly recommend it. You can do a pretty thorough analysis yourself of what’s different between you touchdowns at Yechon and other airbases. Yes, set the weather to deterministic and turn wind off to start with, or at least make the wind consistent with both AB’s for consistency. And pay attention to your VV (descent rate and AOA) at touchdown.
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@Aragorn said in What is it about landing at Yechon?:
@jcook said:
No thanks Zero. What a stupid comment you’ve made. There’s always at least one in the BMS forums.
He was only joking, dude.
His posts are always friendly.
As are yours.
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@jcook said in What is it about landing at Yechon?:
There are some significant elevations in the area - maybe BMS is modelling that type of wind shear.
YES! BMS model the wind when you are close to elevations!
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Read this post thought I’d try a mission so created a TE today as the date w fair Wx. Had wingtanks and four slammers loaded so was a bit on the heavy side.
Flew straight out then east to about a 12 mile initial approach point.
Only issue I had was picking up the PAPI lights on short final and I think that was because of the closeness of the trees to the threshold.
The landing was fine no issues with point of touchdown or winds. Wind on final at 3000 was 320 at 20, at touchdown same direction about 8 ish kts.
So maybe you have more of a crosswind on your TE?Duke
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@jcook Is one direction worse than the other?
I have suspected BMS to model some kind of degradation of lift as we lose altitude (which is probably proper physics). Around 100-200 ft its like you briefly enter an air pocket. You can even notice it in the basic landing TE at Gunsan. The area around Yechon is much more uneven and could maybe cause this?
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@jayb said in What is it about landing at Yechon?:
@jcook Is one direction worse than the other?
I have suspected BMS to model some kind of degradation of lift as we lose altitude (which is probably proper physics). Around 100-200 ft its like you briefly enter an air pocket. You can even notice it in the basic landing TE at Gunsan. The area around Yechon is much more uneven and could maybe cause this?
Classic boundary layer effect
You need to take wind into account when you land , that’s why tower gives it. When entering into the ground boundary layer the wind suddenly slows down which will immediately make you loose lift if you don’t compensate with AoA increase
Rule of thumb : add 1/2 of the headwind speed + gust to you landing speed
yes I know if f16 we don’t look much at speed so in case of wind make sure to approach at 11 deg max AOA , that should give you sufficient margin to react fine
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@Mav-jp that is very cool… and also best new landing advice I’ve heard in a long time.
also makes sense that a high-drag configuration would feel that change, more strongly…
Q: how frequently does the wind-speed indicator on the DED update? (I assume it’s based on INS vs GPS drift.) would one be able to “see” this effect, using that?
[Edit: I just gave it a quick try and yes, you can… very cool]