[Filligree]

I'm confused. Are you saying that it'll maintain its normal ground speed despite flying through fast-moving air? Or that it maintains the same air-speed?

The former doesn't make any sense, but the latter is what the GP was saying.

[maweki]

The original comment seems to mean, that the plane has to (actively) keep a larger ground speed in high winds while the reply meant that this just naturally happens as the plane is only "aware" of its relative air speed.

[histriosum]

The ground speed will vary, but the airspeed will not be affected by wind (except momentarily for gusts or shears).

The poster I replied to was implying that due to the strong tailwind, they had to maintain an increased airspeed. That is incorrect. The airplane has no idea it is in a tailwind, and airspeed will be unchanged.

[dTal]

I think the root of disagreement here is that to you, as a pilot, "speed" means airspeed. But to a layperson, "speed" means groundspeed. So saying that an airplane with a tailwind "must go faster to keep enough air going over the wings" reads very strangely to you, as (although it is technically correct) it belies a groundspeed-first type of thinking that is a poor intuition for staying alive in a plane.

[pdonis]

> The poster I replied to was implying that due to the strong tailwind, they had to maintain an increased airspeed.

No, he wasn't. He explicitly said the opposite:

"higher ground speed to keep the same relative air speed."

[danaliv]

I think the confusion here is stemming in part from the fact that "relative airspeed" isn't a well-defined term. In aviation airspeed means the speed of the airplane through the air (modulo specifiers for true vs. indicated vs. calibrated airspeed).

[pdonis]

> "relative airspeed" isn't a well-defined term

The original was "relative air speed", which I would simply take as the way a person not familiar with aviation terminology would say "airspeed"--speed relative to the air.

[JshWright]

I don't think anyone other than you interpreted the comment that way.

[mritun]

I did. Saying “everyone” when it’s just probably one person is not usually ok. It’s fine to say if you interpreted the comment in a certain way, and ok to be the outlier. But assuming your interpretation applies to others more broadly than it does, is counterproductive.

[JshWright]

Both comments were significantly downvoted at the time of my comment, which was what I was referring to. The original comment explicitly mentioned "relative airspeed", which I thought was pretty clear (it's the speed of the plane relative to the air that matters).

I think calling it a "common misconception" is also assuming a lot.

[danaliv]

I teach people how to fly. Trust me when I say that this is an extremely common misconception. It's one of the concepts students have the greatest difficulty wrapping their heads around.

[JshWright]

Do these people never use treadmills or trains?