Viewing profile — frederikvs

Sounds like it could improve the production efficiency of glyptal-impregnated, cyanoethylated bushings for turbo-encabulators!

I'm a diver, DAN is the only company I can name that specialises in diving insurance. Huh, apparently they're registered in Malta, what a coincidence...

Removing the brown ones from a bowl of M&Ms is a 5 minute job that can be handled by anyone. I would expect a lot of people would go "well that's a bit eccentric, but if it makes t…

> To use a dog metaphor, a chainsaw tends to growl before it bites. I believe the author is mistaken about why chainsaws don't cause more harm than they do. There are multiple of w…

This is why I need to have 10 different map apps on my phone. I hate it. Google maps is good enough for find my way in a city, or getting to a destination by car. And when I get th…

Linux's `make menuconfig` [0] and GDB's TUI interface [1] are the first ones that come to mind. Both are very powerful once you get to know them a bit, and are still valuable tools…

From the article, Proba-3 has 10 thrusters, so that would bring the total to 150 Watt. I don't know the power budget for the satellite, but we can make an educated guess : the occu…

Many observations of the sun's corona just use a disk attached to the telescope, as you're suggesting [0]. However, for Proba-3 they want the disk to be over 100m away from the tel…

I'm not familiar enough with the project to answer why specifically cold gas thrusters were chosen. What I can say : if old, proven technology will get the job done, there's a stro…

The goal is to have them a bit more than 100m apart. During observations they aim to maintain millimeter precision. I'm pretty sure the risk of collision has been analysed to death…

From what I can see on wikipedia [0] the first FEEP to be used in space was in 2018. Proba-3's implementation phase started in 2014 [1]. The choice of thruster technology was proba…

That's what's been done so far [0], both on the ground and in space. As I understand it, the further your disk is from your telescope, the better. But your stick needs to be rigid …

I work at the company building these satellites, I've seen them sitting in our clean room. If there's any questions, I might be able to give some answers. However, I'm not involved…

I would expect James Webb has the same issue, and similar ways of dealing with it. It's just that it never hits the press, since it's a normal part of operations. I'm not sure why …

I believe the primary goal was stage separation. Secondary goals were for the booster to make a controlled splashdown, and Starship to make almost a complete orbit, before splashin…

The last few falcon launches weren't on YouTube, only on X.

You should be able to watch it on the spaceX website too [0]. I don't know what quality to expect though. [0] https://www.spacex.com/launches/mission/?missionId=starship-...

There's a recent article about a climber who had to use this iPhone SOS feature. Turns out that actually getting in contact with emergency services is not easy - even though the sa…

A bit further in the article : > Of course, the same device couldn't have been used in a standard cryptic crossword as word length breakup of solutions - (7, 7) vs (3, 4, 7) - woul…

The thrust of 100 tonne isn't really that important IMO. The Raptor has far less thrust than the F-1 engine used on the Apollo missions, but if you strap 33 Raptors to a rocket, th…

I'd say it's pretty impressive. Building and igniting a rocket engine is hard. For more detail, I can recommend watching "Why starting a rocket engine is so hard" by Tim Dodd [0]. …

ESA really needs to work on how they present this kind of thing. Igniting a brand new rocket engine is a sensational event - I would have expected at least a video of the full 12 s…