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I doubt Delta made this. It’s an official the shelf product that can do ships, trains, planes, etc.
by stbenjam 3y ago
I doubt Delta made this. It’s an official the shelf product that can do ships, trains, planes, etc.
- eddieroger 3y agoValid point. It makes a lot of sense in that light instead.
- mulmen 3y agoBut they also have airplane/flight specific identifiers like “flightNumber”, “flightId”, “noseId(?)” and “airSpeed”. Maybe vehicleId is part of a base class or primary key somewhere and that abstraction is leaking.
- hackmiester 3y agoHey, a train has airspeed. :)
- mulmen 3y agoHeh, 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?
- wasmitnetzen 3y agoA train can easily run in a head- or tailwind in the same order of magnitude as its groundspeed.
- skykooler 3y agoI'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.
- mulmen 3y agoWow I got HN’ed twice in one thread. This is not my day.
- temp365984365 3y agoWell, ships have apparent wind vs real wind and apparent course vs real course (currents and drift are a thing).
- MBCook 3y agoThose could apply to an air taxi service or something using helicopters as well.
- danjc 3y ago"Official the shelf" - that your new iOS 17 update helping you out? ;)