that part definitely stood out to me as well. I mean, clearly there are some parts of spacecraft / mission design that are best done in person, but the recommendations of the IRB definitely won't help the staffing issues.
The engine situation actually looks even more grim for New Glenn than what you portray. The differences between making an engine survive flight once and one that can be reused are not insignificant.
To add mor context: there were two main PS3 models with PS2 support, the first one with most of the PS2 hardware (which you might be referring to), and the second one with just the gpu + software emulation for the CPU. The later PS3s scraped it all and had no PS2 emulation. With PAL/NTSC variants, that amounts to quite a spectrum of backward compatibility.
At the latest Q&A Elon said they were not focusing on the energy side of the business because it would require them to not make a number of cars due to being limited on battery / inverter supply.
This becomes exponentially harder as they add more and more power hungry vehicles to their lineup (see Cybertruck / Semi) and market more Mega/Gigapacks to grid operators.
It makes sense for Tesla to try to get as many batteries as possible from as many sources as possible.
The first university I went to allowed calculators and required TI nspire for calc 2. When I transferred the second university did not allow graphing calculators and covered half the content in the same period of time. (calc 2 content was covered in calc 1 at first university)
Out of curiosity, which parts or topics of the 'calc 2' curriculum involved calculators? Where you using it for numerical analysis or for symbolic algebra.
I'm not sure I agree that him being on this first trip is him making it 100% about himself. I think its more him trying to show that it is safe enough even for him to go on.
The combination of Methane and the full flow staged combustion cycle also means significantly reduced coking in the engine, so it drastically prolongs the time between engine refurbishments.
Do you know how a reduced coking works? I've read about the raptor engine[1] and it explains how fuel rich hot mixture leads to coking, it explains how USA solved this problem before (by using hydrogen as a fuel), but how Musk managed to solve it? Partially burned methane should produce free carbon atoms, shouldn't it? Doesn't it raise a coking problem?
In a conventional hydrocarbon fueled engine, you're using a fuel with hydrocarbon chains at approximately room temperature to cool the engine. With only a little heat addition, you get up to a temperature where these chains can shed hydrogens and convert their C-C-H bonds to C=C double bonds. These bonds in turn allow hydrocarbon chains to join together into larger molecules that can coagulate and stick to the walls.
Methane on the other hand is starting out at a much lower temperature, and it's very difficult to get methane molecules to react with each other to form large molecules as you're not starting with any single C-C bonds. Isolated free carbon atoms (soot) aren't much of a problem.
According to the link above they do. Full-flow means to have two pre-burners one going fuel rich while other going oxygen rich. Though I'm not a rocket scientist and I'd be grateful if proven wrong.
Between where I live now and where my parents live, there is a distinct lack of dc fast chargers (most are in dealers where you need to be there during business hours to use as they regularly park cars in those spots), while there are plenty of superchargers.
I really want to buy a used i3 for my daily driver, but there is no way I'd be able drive it to my parents without borrowing my wife's car.
IIRC it depends on if it was ordered with FSD or bought it as an upgrade. My understanding is if it wasn't originally ordered with it, the new owner has to upgrade again to get it.
(Since its on the monroney label they have to keep it for cars that are ordered with it originally)
