OneFutureOfMany
OneFutureOfMany t1_jdvumb4 wrote
Reply to comment by ThePufferfishJeff in If there was a hole in the ISS, would everyone get sucked out like in Sci-Fi movies? by hobbitlover
How people conceptualize it is slightly different depending on the wording, I'd say.
The example above... if you were at the far end of the station from the hole, you'd feel close to nothing except the air leaving you. There is no "suck" feeling.
When many/most people think of "sucking" they sort of envision a force that would permeate the internal structure and suck at everything.
Instead, talking about the atmosphere "pushing", it's intuitively obvious that if you're at the far bulkhead, you feel almost no force.
OneFutureOfMany t1_jdvu8xj wrote
Reply to If there was a hole in the ISS, would everyone get sucked out like in Sci-Fi movies? by hobbitlover
In a massive environment (imagine an school/office building sized space station) without bulkheads where a hatch was open to Vacuum, the wind/pressure would be ridiculous and would last for a long time.
No sane engineer would design such a station.
But SciFi likes to imagine they would.
OneFutureOfMany t1_jd04fvb wrote
Reply to comment by malepitt in Student built satellite launched by SpaceX and powered by 48 AA batteries and a $20 microprocessor shows a low-cost way to reduce space junk by DukeOfGeek
That has nothing to do with AA batteries.
Why spend $10k to launch a satellite who’s batteries (Energizer?) will die and leave it orbiting uselessly for 4.5 years?
But yeah a drag sail can reduce time in orbit.
I’m glad some students are getting some experience designing and launching satellites. It’ll be a major step for their careers.
OneFutureOfMany t1_jdw6yt2 wrote
Reply to comment by dingo1018 in IVO Quantum drive to test all-electric thruster on controversial basis of "Quantized Inertia" by J_K_
Link?
The EM drive initial test results were all described as minor heating effects and equipment error and didn't scale.