These guys are friends... We share investors, I've visited them at their test site, and they're neighbours at IIT Madras Research Park (where their rocket facto

These guys are friends... We share investors, I've visited them at their test site, and they're neighbours at IIT Madras Research Park (where their rocket factory is). Their engines are a pleasure to hold and see in real life... Couple of points that are missed in the article: 1. 3D printing is a way of bringing down assembly costs - the geometry they print is quite intricate, and it allows much better performance. The disadvantage is that it wouldn't survive multiple launches, but these are meant to be single-use rockets anyway so it doesn't matter. This is a way to build a semi-cryo engine relatively cheap. 2. They are doing it _really_ conservative; three attempted launches of which two were cancelled in the last two minutes (the fourth succeeded). But they always err on the side of caution. It's impressive enough that they're able to cancel so close to launch without losing the vehicle. 3. Here's the launch: https://www.youtube.com/watch?v=yGWruZR4rSg https://www.youtube.com/watch?v=yGWruZR4rSg