Spyke

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22 replies

lemmy.ml

90 km/h, for those who use metric in sane ways

69
lemmy.ca

Uh is it not 60? Am I having a stroke?

60 km/h = 60 kilometers in 60 minutes = 1 kilometer in 1 minute

And assuming the fundamentals of mathematics haven't actually changed, that is ungodly slow for pretty much any modern jet aircraft.....

Edit: WHY DOES THE HEADLINE SAY THAT

24

That is correct. But the headline also says "more than", making it even more useless.

21
lemmy.world

From the article:

The data, which comes from a system called multilateration, does not show precise altitude and speed information, but it does show the plane fell to earth at a rate of descent of 1,541 metres per minute

92.46 km/h

But still, that’s indeed very slow for an aircraft like that. I’m sure they just worded it that way because it sounds faster.

12

90kph is very slow for a flight speed, but stupidly fast for a decent speed. That is about half the speed of a skydiver free falling. That, added on to the airspeed, would be a very bad situation for any plane.

5

Oh I get it: you mean 1.5km per minute. Easy mistake to make.

2
Gounreply
lemmy.ml

Damn, I thought it was one crash per minute in a 1km radius. I'm stupid af.

3
lemmy.ca

Article is written confusingly as the author does not seem to understand that the speed quoted, ~1500m/min, is the descent rate and does not include airspeed.

The plane's actual impact velocity was certainly much higher than that.

7

If we translate the bizarre unit of 1500 meters/minute out of anti-intellectual "I'm too stupid to divide by anything other than 10" units and into the figures the ship's instruments are calibrated in.

1500m/min works out to 4921 ft/min, which is what your typical VSI is calibrated in. For context, that's about where a 737 pilot would stop calling it a "descent" and start calling it a "dive." A 5,000 foot a minute descent is pretty quick, that's loss of cabin pressure descent territory. A more typical descent-from-cruise will be done at 3000 ft/min or so, which would take you from cruising at 30,000 feet to sea level in 10 minutes.

1500m/min works out to about 48 knots or so, that's what your typical ASI is calibrated in. I would be very surprised if you could get a B-52 moving that slow off the ground. That just happens to be the VSO speed of a post-1980 Cessna 172. You can't get a Skyhawk going that slow, let alone a Stratofortress.

So yeah, the BUFF hit the dirt going faster than that.

3

I guess AI has replaced journalists already. That escalated quickly.

3

I miss the good ol days when we used to use proper Rods and wear an onion on our belt, which was the style at the time.

6
lemmy.zip

Look out! We're approaching speeds not seen since the interstate!

6

That was just their vertical speed at the time of impact. In normal flight, it's usually zero or close to it. This thing was falling fast, possibly faster than just a freefall.

1
piefed.world

At American, I’m getting really tired of rooting for the opposition

2

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B-52 bomber crashed at more than a kilometre per minute at US Air Force base | Spyke