🌪From the weekend, this is one of the most violent tornado videos I think I’ve ever seen🌪
This was from a tornado outbreak in, of all places, the Czech Republic
The way those trees topple over is unbelievable. That is some incredible wind speed
From a bit further away, this gives you some perspective on the strength of this storm and the level of danger present in the first video
This is the scene afterwards, it looks like a bomb went off. Really bad situation
Here’s some aerial footage of the damage via @BrnoNewsCTV
The tornado apparently left a damage track 26 km long that ranged from 100 to 700 meters wide
We have a relatively high frequency of tornadoes in the US, but they do happen all over the world
I saw a lot of comments remarking how unsafe it was to take that video (true! don’t do that!) but for an area where tornadoes are rare I think we need to cut them some slack
Also consider that even in the US where tornado safety is a regular point of emphasis, there are many myths people believe (parking under overpasses!) and still plenty of folks taking dangerous videos close to windows
So, if I understand correctly, it sounds like GE has successfully tested a turbine-based combined-cycle engine that incorporates: 1) gas turbine; 2) rotating detonation engine; 3) ramjet; 4) scramjet 🤯
As we approach what may be a historic Starship flight test, this Reuters report is really, really bad
No excuses: as arguably the number one launch provider *in the world* the safety culture at SpaceX has to be better. They should be setting the standard (in a good way)
If we are going to continue giving them billions annually in taxpayer dollars, they can’t keep treating workers like disposable meat puppets
And yes before you ask these numbers are much worse than industry averages
This is an absolutely total systematic failure that goes beyond SpaceX—NASA has some explaining to do about how they allowed SpaceX to operate in their own backyard allowing a > 20% injury rate
If you're ever frustrated by someone with a PhD acting like a know-it-all outside their niche field of study, just remember that Albert Einstein tried to design an airfoil but it performed so poorly during testing it's flight characteristics were compared to a "pregnant duck"
HT to @milan_tomicc for reminding me of this the other day
For a bit more technical insight, bottom line is that Einstein designed this entirely using Bernoulli theory.
Stall at 12deg AoA @ 92 L/D
He later confessed he was "ashamed" and "this is what can happen to a man that thinks a lot but reads little"
Am I being unreasonable in thinking that "clearing the launch pad" (that everyone knew would be destroyed) is a bit of a low bar for arguably the most successful launch company *ever*?
There are tons of insanely smart, hard-working, talented people there
NASA needs Starship to put boots on the moon
So I expect more than what we got yesterday
When some brand new startup or a university rocket club sends their rocket into a death spiral at T+4min we all pat them on the back and say "space is hard" and "you'll figure it out"
I hold SpaceX (and NASA) to a much higher standard. SpaceX is better than this. It wasn't ready
Some quick notes about this images: first, this is from a technique called schlieren imaging and what you are seeing are density gradients in the flow. helps to visualize shock waves, expansion fans, etc.