NextGen budget total from 2007-2022 was 14B, about 1B/year, not 17B last year. See the GAO report. https://www.gao.gov/assets/d24...

You could have bought a brand new PC in 2020, and be stuck with expensive security updates five years later because Windows 11 requires TPM2.

If it were just a free upgrade it wouldn't bother me, but Windows 11 won't run on anything without Trusted Platform Module 2.

to clarify, I mean signs of intelligent life, of course. And the cities are a mix of brown and gray.

Ship tracks and aircraft contrails are the two most obvious signs of life on the planet when looking down from the ISS during daylight. Even the largest cities just look like brown smudges. At night, of course, city lights are there.

HVAC uses engine bleed air but that is turned off during takeoff to increase engine power.

When there is a surge in power usage, power companies have to spool up a fast-acting power plant to keep up with demand. Power companies don't like doing that because the power they produce is pretty expensive, and also tends to be entire fossil fuel fuelled. There is already a scheme in New York and California where you can voluntarily reduce your usage during surge periods called 'OhmConnect' ( https://www.ohmconnect.com/how...). You can actually get paid for not using power during these periods, and if you have a smart thermostat you can set it to turn off AC automatically (or just alter the temperature thresholds) during those periods to get paid by the power company.

Now, if you happen to have a large-capacity battery in the car connected to your house, you could have it set up so that during surge periods it uses energy from your car, and then charges it up afterwards. You get those sweet power company bucks without having to actually change your power usage behaviour at all.

This was seen at 5000' 15 miles east of LAX, which puts it firmly in the LAX Bravo, which is illegal for Part 103 aircraft without prior authorization. Furthermore, part 103 aircraft are not permitted to fly over congested areas, irrespective of airspace.

http://www.usppa.org/federal-a...

However, as long as the jetpack weighs less than 254lbs, has less than 5 gallons of fuel, does not do more than 55kts in level flight, and has a stall speed of 24kts or less, then there are lots of other places you can legally fly it.

It's not 7000Wh/kg, it's 7000W/kg.

(See also https://www.graphene-info.com/...)

That means you can get a lot more power from a given weight of aluminum ion battery than you can from lithium ion, but the energy density at 160Wh/Kg is not as good as for instance Tesla batteries, at ~260Wh/Kg.

It's a shame - I got excited for a moment because a 3x energy density for batteries could entirely revolutionize general aviation.

Praise the computer!

The computer is your friend.

Citizen, did you realize that accessing a treasonous communist bulletin board 5LA5H-D0T is prohibited?

Please report to discombobulation bay 583-TA for termination.

Have a nice day!

As other posters have pointed out, the differences between platforms means that you often can't write once, run anywhere. However it is nice to be able to learn a single system and then use it to write software on a large number of platforms.

The most important thing to come from the Yellow Pages was this 1983 advert:

https://www.youtube.com/watch?...