WiFi without internet on a Southwest flight

Re:WiFi without internet on a Southwest flight by mulmen on Thursday September 28, 2023 @03:11PM (#37694222)

Heh, true. I deliberately left out altitude because this is HN but you caught me anyway.

Presumably a train's groundSpeed and airSpeed are the same. If they diverge you have bigger problems than a JSON schema.

Is there a variant of this for ships? surfaceSpeed vs seaFloorSpeed?

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Re:WiFi without internet on a Southwest flight by wasmitnetzen on Thursday September 28, 2023 @05:28PM (#37696136)

A train can easily run in a head- or tailwind in the same order of magnitude as its groundspeed.

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Re:WiFi without internet on a Southwest flight by skykooler on Thursday September 28, 2023 @07:30PM (#37697336)

I've been tempted to mount a small anemometer to my car - by subtracting the groundspeed from the measured airspeed, one can get the wind speed and direction and figure out whether there is a headwind or tailwind and if so how strong. Theoretically this could be used to drive more efficiently, though the extra drag from the anemometer would probably cancel out any gains.

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Re:WiFi without internet on a Southwest flight by mulmen on Thursday September 28, 2023 @08:23PM (#37697787)

Wow I got HN’ed twice in one thread. This is not my day.

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Re:WiFi without internet on a Southwest flight by temp365984365 on Friday September 29, 2023 @04:31AM (#37700859)

Well, ships have apparent wind vs real wind and apparent course vs real course (currents and drift are a thing).

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