/sci/ - Science & Math

>>15987874
subcooled propane and liquid oxygen, full flow dual expander cycle engine, keep the smaller set of propellant inside a cryogenic bag inside the other tank so you only have one tank and no bulkheads
unknowns: what's the actual correct size for a dual expander cycle? how many engines?
correct size for the current market is roughly twenty tons to LEO fully reusable, start with one of the early space shuttle concept's upper stages (the full real TSTO with integral fuel tanks) as an aero and structural concept and iterate from there a few times by redoing it completely
design a normal cylinder upper stage that'll be easier to build for initial testing flights, reuse as many systems as possible from the reusable concept design (RCS, engines, pressurization, avionics, batteries) to make it less of a waste when you upgrade later
put these stages on top of a Falcon 9/Super Heavy clone

>>15796802
They strayed from the path

>>12635732
>SpaceX and Starship should have been a thing developed in the 80s, not 30 years later
based

>>12389427

Now that ULA fucked up again, and this time the scrub is gonna result in a 1-2 week delay, to make sure the engines didn't get fucked, will spaceX be able to double launch tomorrow? Or will NASA make them wait until ULA fixes their shit again?

I just wanna see Zero G aerobatics in the starship crew cabin bro's, like in Skylab
I'm sick of this cramped garbage we get on the ISS

>>11981234
>carrying your son your shoulders as you show him the world
Very sweet.

>>11975293
Replacing the orange tank and boosters with a larger Shuttle might have worked.

>>11603201
And Congress should've went for that.

>>11458662
Although, he called it the DC-3 at the time as a reference to the Douglas DC-3. It incorporated the winged booster and orbiter stages of the early Shuttle designs. The "Shuttle DC-3" had superior low speed and glide characteristics over the Shuttle. Both stages also had provisions to have jet engines mounted to them after landing so they could be flown like regular planes to a refurbishment center. His designs were expected to fly thirty times per year with a fleet of six orbiters and four boosters. The whole system could bring 12,500 pounds to LEO for $23M in 1985 (a little over $93M in 2020). Although the frequent flights, and iterative improvements to the system could bring that down.

http://www.astronautix.com/s/shuttledc-3.html

>>11413500
the shuttles had a few hundred m/s dv
Starship has multiple km/s dv
it's what shuttle should have been from the start but NASA were too cowardly to propose

>>11254439
nyes

>>11242430
Indeed.

>>10858805
Chrome is the way of the future, I guess.