A 56.6 kbps modem just needs an analog audio channel to work, right? A stereo jack has two channels for full duplex communication at that point.
GamingChairModel
joined 2 years ago
The only problem with that plan is that it takes a lot of energy to raise an orbit that much, I'm not sure how to make that feasible.
Lowering the orbit takes energy, too, unless you're relying solely on atmospheric drag.
Your original comment said 2050, which is a long way off. SpaceX's first launch attempt was in 2006, their first successful launch was in 2008, their first successful recovery of a rocket in reusable condition was in 2015, and first reused a rocket in 2017. If they can make progress on that kind of timeline, why wouldn't someone else be able to?
Physics don't change fundamentally between 6 meters and 120 meters
Yes it does. Mass to strength ratio of structural components changes with scale. So does the thrust to mass ratio of a rocket and its fuel. So does heat dissipation (affected by ratio of surface area to mass).
And I don't know shit about fluid dynamics, but I'm skeptical that things scale cleanly, either.
Scaling upward will encounter challenges not apparent at small sizes. That goes for everything from engineering bridges to buildings to cars to boats to aircraft to spacecraft.
The satellite constellation is the natural consequence of cheaper rockets. It's a true paradigm shift, but the pioneer in this case has only the moat of being able to spend less money per launch. If someone else can deliver payloads to low earth orbit for less than $2,000/kg, then they'll easily be able to launch a Starlink competitor.
The Walkman and other tape players were so much superior to CD players for portability and convenience. Batteries lasted a lot longer for portable tape players than for CD players. Tapes could be remixed easily so you could bring a specific playlist (or 2 or 3) with you. Tapes were much more resilient than CDs. The superior audio quality of CDs didn't matter as much when you were using 1980's era headphones. Or, even if you were using a boombox, the spinning of a disc was still susceptible to bumps or movement causing skips, and the higher speed motor and more complex audio processing drained batteries much faster. And back then, rechargeable batteries weren't really a thing, so people were just burning through regular single use alkaline batteries.
It wasn't until the 90's that decent skip protection, a few generations of miniaturization and improved battery life, and improved headphones made portable CDs competitive with portable tapes.
At the same time, cars started to get CD players, but a typical person doesn't buy a new car every year, so it took a few years for the overall number of cars to start having a decent number of CD players.