overview for anindefinitearticle

cabbage in c/[email protected]

[–] anindefinitearticle 78 points 1 year ago

MY CABBAGES

White House Seeks $105 Billion to Arm Israel, Ukraine, and Taiwan in c/[email protected]

[–] anindefinitearticle 9 points 1 year ago (2 children)

~4 NASAs (FY2023)

Shell Using Fortnite, TikTok, etc. to Convince Kids Fossil Fuels Are Cool in c/[email protected]

[–] anindefinitearticle 25 points 1 year ago (1 children)

The HackerNews comments are full of pro-oil propaganda.

Did you? in c/[email protected]

[–] anindefinitearticle 3 points 1 year ago (1 children)

For every action there is an equal and opposite reaction.

Newton’s third law.

Stoke Space successfully conducted a vertical takeoff and vertical landing (VTVL) developmental test flight of their reusable second stage rocket in c/[email protected]

[–] anindefinitearticle 4 points 1 year ago (1 children)

From the wiki page linked here, this looks like a toroidal spike. I wonder what sort of gas they use for the base bleed.

Several versions of the design exist, differentiated by their shapes. In the toroidal aerospike the spike is bowl-shaped with the exhaust exiting in a ring around the outer rim. In theory this requires an infinitely long spike for best efficiency, but by blowing a small amount of gas out of the center of a shorter truncated spike (like base bleed in an artillery shell), something similar can be achieved.