Hacker News Reader

Israel and India use 3 stage HTPB solid rockets for space launches you don't need to have a 2nd stage liquid fuel rocket to get to orbit.

Also 20000% larger by mass? want to be a bit more serious? if you scale this rocket by 35-40% you get to about the size of the first stage of the Shavit solid fuel space launcher which is a commercial space launcher.

You do understand how scaling works on 3 dimensional objects right?

View on HN

10000% by mass is a more accurate figure and since you like dimensional scaling, that's 364% scaling.

The GoFast Rocket weighs 350kg. Scaling it by 35% (1.35 ^ 3) would make it weigh 861kg. The rocket you mentioned weighs between 30 and 70 _tons_.

I'm not sure you understand how anything works.

> I'm not sure you understand how anything works.

Based on my previous conversations with this guy, this seems to be a recurring pattern. I do hope that he's using these conversations to recognize and fill in the holes in his knowledge. :)

What good does it do to scale something up to the size of the first stage of a four stage rocket? Those other three stages are pretty important to that whole putting-stuff-in-orbit business.

Edit: I see Shavit can also launch in a three stage configuration. My overall point remains.

Reply on news.ycombinator.com