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Edit: Footnote: Gabriel, we never were successful at getting Donald-the-wrench convinced either. It was fun pausing and considering where the extra 40 knots of kinetic energy comes from when you turn from a 20 knot upwind to a 20 knot downwind, cuz it is REAL when you smack the mountain ...
Evan, a few pages ago I posted an airplane doing a hammerhead stall and stated that “over an extremely wide range of airspeeds, including many wwwwaaaayyy below the 1G stall speed and maybe all the way to zero, that plane is not_stalled.” Gabriel might even argue, at-length, that a hammerhead STALL is a misnomer.
You might nitpick at it, but that’s why your not_riddle does not_work. A 777 at 60 knots does not HAVE TO BE stalled.
Stop ignoring people because they appreciate broadly-applicable and extremely-useful rules of thumb.
Several years ago, on a different forum, an aviation mechanic argued vehemently (even more than Evan) that you lose airspeed by turning into a tailwind.
Much like here, there was a three? on one effort to try and explain things.
It’s a common myth. You can play some logic games and come up with some interesting questions, even though it’s basically false....
Go fast, establish a really steep climb and firewall the underslung engines and pull up as you approach 60 knots.
This guy slows from well above stall speed all the way to near zero airspeed, and I’m not sure he ever stalls. But a relentless pull up is available to exceed the critical AOA at most of those speeds:
Bernt just gave you a really good hint…correction- as I typed this, Bernt offered even more good hints.
”You can stall an airplane at any speed an attitude” is a broad, fundamental principle. And yeah, we can pick at it and make riddles.
Can you stall an already stalled plane? Yeah, I that’s an interesting question.
Can you stall (or not_stall) a 777 at 60 knots? Yes you can.
The bottom line is that ”You can stall an airplane at any speed an attitude” is a broad, fundamental concept and while you can FLCHCBFCOM236AQRHVORDMEADFADSBTCASTOGANDB all day long, you just can’t process the multiple and subtlety gray bits of wisdom and relevance it provides to many aspects of flight and to too many plane crashes (though, I’m guessing not this one)....
Gabriel already KNOWS. He isn't "coming up with" a way you haven't considered.
It was taught to him by his Spanish-Speaking flight instructor in Argentina.
It was taught to me by my English-Speaking flight instructor in a Red-State where, we had some disdain for mask rules.
It was taught to ATLcrew perhaps in a third language.
And to Bernt in German.
And to Bobby many many hours ago.
And Gabe and I are somewhat stupid, ass-hat. parlour talkers too who know very little of ATP operations, but do have documents allowing us to operate light-single aircraft where you are taught fundamental rules, procedures, and teaching-moment examples....
That doesn't fix it either, and it's awesome how you dig yourself a deeper hole and prove Bernt even MORE right on your lack of knowledge.
I can go all day at less than the 1G stall speed in many types of aircraft and not stall them...and if I do it right, I efficiently generate all sorts of beautiful, smooth-airflow lift. However, it is type specific, it won't work on some aircraft, but does work on C150's and 747s.
It's one of those fundamental things you get taught in your first couple of hours of flight training.
But please, continue your readings of Airbus FCOM's, and look at the acronyms, like they are pictures on a naughty website....
Like, Gabriel and Bernt, I find this to be an overly-bold, pontification.
Gabriel wants positive lateral separation, but he’s not_completely sure how much should be ATC vs.TCAS-236a and he’s not_sure if the airspace corridors should be reworked. (Gabe “not_sure” is not_a derision at all, and I do not_disconcur. Not_sure is an acknowledgment that DCA air traffic is not_simple).
Make no mistake- they’ll take a hard look, fix a few things and claim it’s air tight, and it will probably be improved, I’m not_betting against Gabriel on some positive lateral separation procedures (not_sure exactly what) being likely....
I don’t have a link, but read a couple of lines somewhere saying they were (or extremely likely were) in use. I don’t [all caps] KNOW they were in use, but I have a steak dinner on it.
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