ToughSFさんのイラストまとめ

Tsiolkovsky came up with the deltaV equation that describes to us the exponential tyranny of rocket flight.

Funnily enough, he also described the best way to side-step having to deal with that equation for orbital launch: the space elevator.
https://t.co/JyemhvAjC7

The new infographic from @HAKUTO_Reboot_e detailing their lunar lander.
It is in 4096x4096 here: https://t.co/nO4vvNM3WX
It features a 4K camera and a 30kg payload, aiming for a 2022 landing using MMH/NTO propellants in titanium tanks, inside a carbon fiber monocoque structure.

The MiG-23MLD 'Flogger K', the final version of this design, depicted in great detail by the RenderDock team. The last unit was produced in 1984 but is still in service today.
#art
https://t.co/RTGU1SoOTM

The Mars Injection Burn which takes Perseverance from Low Earth Orbit into a trajectory headed for Mars requires about 3.5km/s of deltaV. This was completed between 45:00 and 52:50 (470 seconds), so the average acceleration with the Centaur RL-10 upper stage was just 0.78g!

Testing a design for something like a scramjet in wind tunnels is going to be different that in real flight, especially when hypersonic conditions are involved. How different?
16% less fuel efficiency and 28% less wall heating in this Mach 12 comparison:
https://t.co/xj1WvypU2p

The 1966 Lockheed CL-945 design took off like a helicopter and then just stowed away its rotors in horizontal flight, using either jet engines or propellers with short wings.
The landing sequence would have been a nerve-wracking affair.
https://t.co/FUAOrHBLvA

These are fun. Imagining what the Mars Colonial Transporter from SpaceX could have been, back in 2015. The split habitat design is quite original!
#space #art by Michel-Lamontagne.
https://t.co/eSLjxCCYzP
https://t.co/CfHztK7eNq
https://t.co/xTenp4A8qj
https://t.co/l4XgO2zhVW

Just because stars like our Sun don't explode in a supernova doesn't mean they won't have exciting ends.
They will blow themselves apart as spectacular planetary nebulae over the course of a few thousand years.
@BadAstronomer
https://t.co/RfwZZP5xTM

ThermaSat is a small solar thermal energy system for a CubeSat that stores heat in molten salt and then uses it to boil water to 700K+ for propulsion.
https://t.co/GKm1zYwVML
Isp will be atrocious but deltaV requirements are low anyway.

Countless stars setting on countless oceans, devoid of life, never visited or observed until they freeze or boil away.
Could this be our Universe?
#art by Aenami.
https://t.co/CgYQFGRzDj