/sci/ - Science & Math

>>11343515
we have gun launched guided projectiles. Cellphones are built to withstand peak accelerations up to 4000 g's because that's what they experience when dropped.
https://www.arl.army.mil/arlreports/2006/ARL-TR-3705.pdf
>>11343533
>>fuel
is just liquid. It might compress a little bit under the high load.
>>compressed gas
the increase in pressure will be negligible. Fluidic devices can withstand enormous accelerations and have used in gun launched projectiles. You can also use solid rocket motors:
https://pdfs.semanticscholar.org/d3eb/7789842e0600ffb8b12e385a59123bed0fd3.pdf
>>11343498
so here's what gets me. How the hell are they going to decouple the damn thing from the arm? Force on the arm's as much as some ships weigh. I doubt a mechanical grapple will work. The explosive bolts that held the shuttle on the pad have about the required strength, but ideally we'd use something with a high specific strength. So what they might be doing is wrapping the projectile in that same composite they made the arm from and break it to release the projectile. This irritates my reusability autism.
>>11343551
>>11343599
world land speed record is mach 8.4.
https://en.wikipedia.org/wiki/Railway_speed_record#Rocket_sleds
The rocket's probably black because it's using a carbon fiber ablative.