So assume 1000 meters in diameter and 15km/sec for giggles.
a = v^2 / r = 15,000 x 15,000 / 500 = 450,000 m/sec^2 or 45,000g. It's on the same order of magnitude as the previous calcs.
That's obviously also a big engineering challenge because it's freaking HUGE, especially for the precision required.
The really great thing about going super-super fast is that at 15km/sec you're in space in ~10 seconds. Obviously you're going to start scrubbing speed really fast since drag is proportional to velocity squared. But you can evacuate the whole launch assembly and put some kind of an explosively opened door at the exit point and maintain your speed up until the last second.
what if you launched two vehiucles, but the first vehicle is more like a bullet that disintegrates and causes a wake in front for the second vehicle to pass thru with less drag?
As soon as the first one hits the air it starts to slow down. The second one, as it's hauling ass through the wake, doesn't slow down. The difference in speeds gets very big, very quickly. As such the second one, the payload, would find itself smashing into the first one in short order.
It doesn't matter how many you send. If your scenario relies on the fact that the last in line must be the fastest of the group, it's always going to run in to the object directly in front of it.
I was imagining air behaving like water. If you send first projectile it'll slow down but move some water to the sides. Second will slow down less so it'll catch up with the first one but it will also push some water to the sides. Third also will catch up with the previous ones but each subsequent one will get farther as it travels through space punched out by previous ones.
I don't think it's practical in any manner but I think such brute-forcing stream of projectiles out of atmosphere by literally punching hole in it might be nice to look at.
That still involves sending the first at the requisite speed, and any drafting you might get is limited at best. It'd also leave a highly unstable wake trail, as any object ripping through the air at 7-8km/s is going to tear things up.
a = v^2 / r = 15,000 x 15,000 / 500 = 450,000 m/sec^2 or 45,000g. It's on the same order of magnitude as the previous calcs.
That's obviously also a big engineering challenge because it's freaking HUGE, especially for the precision required.
The really great thing about going super-super fast is that at 15km/sec you're in space in ~10 seconds. Obviously you're going to start scrubbing speed really fast since drag is proportional to velocity squared. But you can evacuate the whole launch assembly and put some kind of an explosively opened door at the exit point and maintain your speed up until the last second.