Why would you want to? I don't know...to land? Have you ever landed a plane? If you have then by the nature of landing you intentionally 'reduced the effectiveness of a very powerful control surface'.
You've never flown or landed a conventional gear airplane, have you?
A conventional gear airplane, by nature, is a rudder airplane. Not at all like a turbojet airplane where the rudder is by and large a decorative ornament.
That said, on the roll-out, rudder effectiveness eventually peters out as airspeed decays to nothing. It's said in a rudder airplane (conventional gear) one must fly the airplane to the tiedowns; the flight isn't over until the aircraft is secured and the paperwork done. This is true of tricycle gear aircraft too, but tricycle gear aircraft allow bad habits to develop, not the least of which is complacency.
When the airflow over the rudder decreases in a normal, calm-wind landing, one has very little groundspeed. When landing with a tailwind, the same thing occurs, but with a higher groundspeed. That's it.
So the rudder is a completely irrelevant in the directional control department?
Taken out of context you could say that and continue to put words in my mouth, but I didn't say that.
When there's no more rudder authority, then yes, it is irrelevant. It becomes relevant again when you give it a blast of power to temporarily restore some measure of authority, and that works whether you have a headwind or calm wind or tailwind.
When you've decreased the airspeed to the point of no more rudder effectiveness, then yes, the rudder becomes irrelevant in the "
directional control department."
There are three means of directional control - rudder, tailwheel, and brake. You're perfectly happy to throw one out the window? Sometimes you need all of them, and as much as they can give.
There are more than three means of directional control, as you've failed to include power and aileron use, as well as steering, the tailwheel lock, and other features, but it's you that said I'm "
perfectly happy to throw one out the window." I did not. Again, take credit for your words, as I said no such thing.
When you're out of airspeed, then the rudder is already no longer effective, and is irrelevant. It's not thrown out the window; it's doing what always occurs during a landing. Depending on where you are in the landing, one or more of the directional control inputs is more important than the others. Rudder is important, but decreases in importance as the aircraft winds to a slower and slower speed, where other features become more significant in directional control.
Also equally important is consideration of the period leading up to, during, and after the transition from the flying tail to the tail on the ground. The transitory period is a very significant point, and one is going to have that control regardless of whether one has a headwind or tailwind during the tradition to set the tail on the ground. The only difference is the actual velocity over the ground. Otherwise, it's the same.
If you think the rudder is completely irrelevant and important, have you ever seen those tailwheels that look like roller skate wheels? Do you think they have tons of grip?
Seen them, serviced them, used them, installed them, landed them, flown them, yes.
Grip? Irrelevant. Their purpose it to keep the tail from dragging on the runway or gravel or grass. They're there to lightly support the structure, not to "grip" anything.
Do you think original Cub brakes work great, and that differential braking will save you from a ground loop when all else has failed? No, they won't.
The original cub brakes were largely ineffective and someone who knows how to use the cub makes very little use of the heel brakes. The braking on the cub was very typical for aircraft of the day, and works just fine as intended. If you're to the point of ground looping and have already made that mistake, then the rudder or brakes may not save you from your own poor technique.
Very simple: don't ground loop in the first place. Keep the long axis aligned with the direction of travel. When that's in play, the aircraft won't ground loop.
I think you're being deliberately dense for the sake of argument.
What you think, of course, is irrelevant, but it's your original statements to which I took exception for their inaccuracy and error, and if you see that as a "sake of argument," so be it. It's entirely irrelevant to the discussion.
You've already stipulated that I probably can't land whatever it is that you fly...so what is it, exactly, that you fly? Must be some really challenging stuff worthy of NASA's finest, the way you're carrying on. It's not a cub, is it?
It makes one wonder how tens of thousands of students learned in cubs and did just fine. The airplane will never be as challenging as the mythology that surrounds it. It's a simple, find little underpowered kite, and it's a pleasure to fly. It's not the dreaded beast that some make it out to be. In the end, it's a very simple, very straight forward, very honest airplane to fly, about like any other.