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stjenka:
Nekaj dni nazaj v antepu ...

https://www.youtube.com/watch?feature=youtu.be&v=VfGe91rFPyo&app=desktop

sasolaguna:
Jet stream pognal Dreamlinerja do neverjetnih 800milj na uro! Na sreco je to airspeed in ne groundspeed, saj bi v tem primeru letalo prebilo zvocni zid pri 767 miljah. To bi se pa lahko koncalo slabo...
http://lax.to/Ya34T

MINIMAX:
Citiraj iz: sasolaguna na 20. Februar 2019, 21:08:05

Jet stream pognal Dreamlinerja do neverjetnih 800milj na uro! Na sreco je to airspeed in ne groundspeed, saj bi v tem primeru letalo prebilo zvocni zid pri 767 miljah. To bi se pa lahko koncalo slabo...
http://lax.to/Ya34T


To je bil "ground speed" in ne "air speed". Avion je glede na točke na zemlji potoval z 800mph, glede na zrak na katerem je "jezdil" pa seveda bistveno manj. Hitrost je streama se je prištela njegovi hitrosti v zraku (air speed) in zato je dobil višjo "ground speed" (dejansko hitrost potovanja med dvema točkama na zemlji)

Although the plane didn’t remain in the “jet streak” — the zone of maximum wind embedded within the jet stream — for long, it still arrived 48 minutes early. And you might notice something suspect about the 801 mph reading — it’s above the speed of sound (767 mph). However, whether air travel breaks the sound barrier is dependent on its airspeed — not its ground speed.
Ground speed is the speed an airplane has relative to a point on the ground. It can be visualized as how quickly the plane’s shadow would move across the surface. Airspeed, on the other hand is the difference between ground speed and the wind speed.

Tminc:
Sicer nismo šli 800 mph, je bilo pa še kar blizu (glej priponko). Letalo B77W
Nekje imam tudi fotko (drug let), ko smo imeli tail (mogoče head, ne spomnim se) speed 364 km/h. Smo pa leteli smer SSW.

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