Crosswind Landings / "Impossible Landing" TE / Crosswind landing advice
-
I’m still interested in the Nordic F-16 procedure that differs from the well-known one. What they do, what difficulties occur, and what benefit there is.
-
Sorry for the story of “the letter vs the spirit of the letter” it
Dee-Jay, I think the English equivalent is ‘The letter of the law vs the spirit of the law’.
-
Procedure are defined in flight ops book for each a/c … On my a/c, we have to add i e half of the burst to the computed final approach speed if the burst if above 10kts.
But this has nothing to do with WCA (wind angle correction)I does not have anything do with WCA (wind angle correction) until it stalls the a/c. If airspeed is lost, for what ever weather condition, and the a/c with stalls the amount of WCA could determined if one or both wings stall. If one wing stall before the other it called a tip stall. Impossible to recover from at approach altitude. I’m surprise there is not an approach WCA limits for the F-16 because of its relax Longitudinal static stability design.
… This speed increase is to prevent stall at low speed, not to reduce the crab angle on final …
I agree and see many benefit to adjust approach airspeed for bad weather… smoother approach, less WCA, less yaw gyration, fpm active, stall prodection. Increase approach maybe dangerous to a cadet, but a seasoned pilot that as survived over-head-brake training I don’t thinks so.
anyway, forgive me for when my knowledge of aerodynamics, what little flight time I have collides with r/l procedures. It seem like you got personal without trying to grasp a concept…
-
Did you also notice that his jet was almost aligned with the runway before he flared? I see small banking and possible rudder before he gets to the threshold. Hmmm. When he finally touches down, there is little need to de-crab. Looks about right to me.
P.S. I do not think you are a snowflake. I do not think others here believe you are a snowflake. Now, a cornflake, well that’s a different story. :lol:
It’s a known fact that the r/l f-16 will fall like a rock if rudder is used at landing speeds. If you still want to look for video that show decraping it will be done just before touchdown. Like when the wheels are ~1 foot off the runway, jmo. I still looking bty. And I if find one, it will be a trophy to post. Good luck
-
For wind-corrected approach there is no beta angle so no change in stall airspeed. From wings’ point of view everything is very symmetrical. It is the ground that is going sideways!
-
Maybe the Norwegians had trouble during winter with icy runways and low friction coefficients? I don’t know if it’s it, it just crossed my mind right now.
-
For wind-corrected approach there is no beta angle so no change in stall airspeed. From wings’ point of view everything is very symmetrical. It is the ground that is going sideways!
If the a/c is in a xwind induce crab and the xwind stops blowing at rate that the yaw stability augmentation system can’t counter……
-
If the a/c is in a xwind induce crab and the xwind stops blowing at rate that the yaw stability augmentation system can’t counter……
So back to your wind shear argument. This is getting more and more contrived…
I does not have anything do with WCA (wind angle correction) until it stalls the a/c. If airspeed is lost, for what ever weather condition, and the a/c with stalls the amount of WCA could determined if one or both wings stall. If one wing stall before the other it called a tip stall. Impossible to recover from at approach altitude. I’m surprise there is not an approach WCA limits for the F-16 because of its relax Longitudinal static stability design.
I agree and see many benefit to adjust approach airspeed for bad weather… smoother approach, less WCA, less yaw gyration, fpm active, stall prodection. Increase approach maybe dangerous to a cadet, but a seasoned pilot that as survived over-head-brake training I don’t thinks so.
Okay. Care to tell me the stall speed for snl flight for the F-16 then?
Oh thats right, there’s an AoA limiter in the jet that prevents you from letting that happen… you cannot stall the jet.
-
It’s a known fact that the r/l f-16 will fall like a rock if rudder is used at landing speeds. If you still want to look for video that show decraping it will be done just before touchdown. Like when the wheels are ~1 foot off the runway, jmo. I still looking bty. And I if find one, it will be a trophy to post. Good luck
Small rudder input will not make the f-16 fall like a rock at landing speeds (i.e. at around 180knts.). And, you do not use any rudder input once you reach the threshold and flare. Your jet will still crab slightly (depending on the amount of crosswind). I land like that in bms all the time. The videos I see where the r/l pilots are landing in crosswinds with their nose aligned towards the runway. That means they are adjusting the jet with slight bank and rudder. By the time they flare, they are no longer adjusting the jet. They don’t need to. If they are not using any rudder, then they are adjusting by slight banking through there decent. Either way, when they flare, they are well aligned already during touch down. The current videos show that.
P.S. I did not know the f-16 de-crapped or de-craping? I guess next time I will have to check my jets shorts! :fart:
-
Small rudder input will not make the f-16 fall like a rock at landing speeds (i.e. at around 180knts.). And, you do not use any rudder input once you reach the threshold and flare. Your jet will still crab slightly (depending on the amount of crosswind). I land like that in bms all the time. The videos I see where the r/l pilots are landing in crosswinds with their nose aligned towards the runway. That means they are adjusting the jet with slight bank and rudder. By the time they flare, they are no longer adjusting the jet. They don’t need to. If they are not using any rudder, then they are adjusting by slight banking through there decent. Either way, when they flare, they are well aligned already during touch down. The current videos show that.
P.S. I did not know the f-16 de-crapped or de-craping? I guess next time I will have to check my jets shorts! :fart:
Some ppl say that decrabbing will cause the F-16’s fuselage will block airflow to down wind wing causing it drop. It makes since because the F-16 is a mid wing a/c.
I’ had an RC a/c that had adverse yaw issue and programed an ARI to make it easier to fly. It was a little J-3 cub with under camber wings that I added ailerons to do flat turns in a small gym. When I input rudder i had to input opposite ailerons to correct for roll coupling. When I input ailerons I had to increase the throttle because the adverse yaw created abnormal drag. So when ever you make an roll correction you have to make a throttle correction. I was fun to fly, required a lot of stick work. Sometimes is it would drop out of the sky because It was changing the control, you have to fly ahead of it.
-
Some ppl say that decrabbing will cause the F-16’s fuselage will block airflow to down wind wing causing it drop. It makes since because the F-16 is a mid wing a/c.
I’ had an RC a/c that had adverse yaw issue and programed an ARI to make it easier to fly. It was a little J-3 cub with under camber wings that I added ailerons to do flat turns in a small gym. When I input rudder i had to input opposite ailerons to correct for roll coupling. When I input ailerons I had to increase the throttle because the adverse yaw created abnormal drag. So when ever you make an roll correction you have to make a throttle correction. I was fun to fly, required a lot of stick work. Sometimes is it would drop out of the sky because It was changing the control, you have to fly ahead of it.
I can see that. But what I do see in the vids suggests otherwise. Not trying to argue here. Just stating the obvious.
-
So back to your wind shear argument. This is getting more and more contrived…
Okay. Care to tell me the stall speed for snl flight for the F-16 then?
Oh thats right, there’s an AoA limiter in the jet that prevents you from letting that happen… you cannot stall the jet.
Your right. Do you really want the FLCS to take control of the elevator on final.
-
I can see that. But what I do see in the vids suggests otherwise. Not trying to argue here. Just stating the obvious.
It would seem that it would return to the crab angle after unloading the rudder
-
Your right. Do you really want the FLCS to take control of the elevator on final.
I want the FLCS to be in control during all phases of flight!
-
Your right. Do you really want the FLCS to take control of the elevator on final.
Its already ignoring most of your rudder input and you insist on applying that, so I’d not be too surprised to see you start complaining that the jet is hard to handle when you assault the other two limiters to roll it inverted for your upside down landing….
-
Its already ignoring most of your rudder input and you insist on applying that, so I’d not be too surprised to see you start complaining that the jet is hard to handle when you assault the other two limiters to roll it inverted for your upside down landing….
I don’t use the rudder in flight. The rudder got enough things control it.
-
I don’t use the rudder in flight. The rudder got enough things control it.
I want the FLCS to be in control during all phases of flight!
You gents might get away with that in normal flight or for delivering ordinance, but not so much in aerobatics and dogfights. I know, i know… “the FLCS does all for you” and “plays” with the rudder, but the doesn´t mean, that you are forbidden to use them too. Infact, in those two mentioned cases it is very “handy” (or should i say “footy”) to use those huge peddals inside of the cockpit :=)
-
Yeah, extra drag during aerobatics seems like a really great idea.
In fact during certain parts of aerobatic flight you are forbidden from using rudder.
-
Yeah, extra drag during aerobatics seems like a really great idea.
In fact during certain parts of aerobatic flight you are forbidden from using rudder.
Yeah, looks like you have flown alot of it ……
-
what, aerobatics? only spent the last 5 hours in my falcon logbook doing precisely that, actually.