#rocketry on Hacker News

2 stories tagged rocketry, newest first.

$96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor (github.com)

366 points by ZacnyLos 7 months ago | 332 comments

GitHub repository with CAD files, firmware, and simulation for a low-cost 3D-printed guided rocket and launcher system.

393 points by trashtensor 2 years ago | 206 comments

A Space Exploration Stack Exchange question asking how much larger Earth could be before chemical rockets could no longer reach orbit.