A couple of planes got a big push from a jet stream with winds clocking 265 mph at cruising altitude this weekend, the National Weather Service said.
Strong high-altitude winds over the Mid-Atlantic sped up sky traffic on Saturday night, getting passengers on at least two commercial planes to their destinations early, after both aircraft hit supersonic speeds topping 800 mph.
Winds at cruising altitude peaked at about 265 mph, according to the Washington, D.C., area National Weather Service office — the second-highest wind speed logged in the region since recordings began in 1948. The highest-ever wind speed recorded in the area at a similar altitude was 267 mph on Dec. 6, 2002.
“For those flying eastbound in this jet, there will be quite a tail wind,” the NWS warned in a tweet.
Sure enough, that tailwind helped cut down the flight time for passengers on a Virgin Atlantic flight from D.C. to London by 45 minutes, according to the tracker FlightAware.
While this is an incredible travel speed, I wouldn't consider it "hitting supersonic" speeds based on ground speed. I read the article wondering about the safety of passenger aircraft at 800MPH, but it seems to not apply.
The aircraft isn't experiencing anything out of the ordinary. Its airspeed - which is the speed relative to the air it's moving through - would be the same. It's just that the air is moving relative to the ground along its direction of travel.
Think of it like a boat moving down a river. If you paddle your speed is added to the speed of the current, but the force on the boat is just from you paddling.
Poorly written summary. Supersonic means exceeding the speed of sound (duh) and the indicated airspeed of the plane at cruising altitude would still be around 250kts, about 1/3rd speed of sound.
There's no reason at all for it to slow down. If you've ever been on one of those moving walkways think about it like that, yes by walking on it you're moving faster than the people around you, but to you you're not walking any faster than normal even though you'll arrive at your destination earlier.
Alaskan bush planes need to be tied down lest a stiff breeze causes them to "liftoff". I swear I saw a video of one being landed essentially vertically as it was flying into a strong wind.
At some point, depending on the distance to the destination and the speed of the Jetstream, it makes more sense to fly around the world with the Jetstream than directly towards your destination without it. The faster it gets, the closer that point gets.
In case anyone is wondering, there are actually subsonic aircraft that can handle going mach.
The F-86 Sabre had a max speed of 687 mph at sea level which is about mach 0.9
But the Sabre could enter a dive from a higher altitude and safely reach past Mach 1 with help from gravity (or another additional source like rockets).
Comparatively, the MiG-15 had poor control authority reaching mach 0.9 and would subsequently break apart if it reached past mach 0.92.
Modern airliners obviously aren't fast enough to reach mach under their own power, but they also can't handle the pressure if they used something like a dive so they would also break apart like the MiG.