Manfred Ehresmann

I'm an engineer - that means I solve problems. - (Red Engineer). Aerospace engineer: systems engineering, ferrofluids, Moon and more.
Alignment: Chaotic good.

[Manfred Ehresmann @AstroEngy]

.@IAC2024 was a blast. Our first non-technical paper ever titled: "STEM: Science, Technology, Engineering and Memes – mostly memes" lead to a full room and many laughs. Find about how to use memes effectively for comm&outreach: https://t.co/AwaBVcRl8X #STEM #IAC2024 #Memes

[Dr Kareem Carr @kareem_carr]

It's not that AI can't be used to do knowledge work. It's that it's wildly unreliable in bizarre and incomprehensible ways. Things you'd never think it could be possible to mess up are the things that it messes up.

Like you ask it download some data and do an analysis, and instead it just completely fabricates a fictional dataset for no reason, and gives you results based on that.

Fine if you catch it, but potentially career-ending if you don't.

It inserts its own ideas without telling you. It deletes critical paragraphs.

These actions would be psychopathic in a colleague, but we're just supposed to accept it because it's a machine.

[Joscha Bach @Plinz]

the hard problem is a skill issue

[Henry Shevlin @dioscuri]

When my analytic philosophy friends complain about "corpo speak"

[Manfred Ehresmann @AstroEngy]

@VI_Hillbilly @MichaelFKane Not a real issue for the destructiveness. If stump A contacts before stump B. Stump A just slams the vehicle against incoming stump B, while driving the crushing of delicate tin box further by sheer inertia.

[Manfred Ehresmann @AstroEngy]

@DJSnM The dread of academic life... Worst part is usually there is a double digit percentage chance of failing anyway, and if you are unlucky the tender for proposal already envisions a winner that isn't you anyways.

[Neil Stone @DrNeilStone]

We need Carl Sagan now more than ever

Sorely missed

[Prusa3D @Prusa3D]

Prusa ColorMix is here: our open-source color mixing model for PrusaSlicer and EasyPrint! 🎨 Full-spectrum printing has been growing fast in the community, so we developed our own model. It predicts the final color you’ll see when different filament colors are printed in thin alternating layers. 1/2

[Joscha Bach @Plinz]

we need to prevent elon from building datacenters in the sky because it will use up all the water in the clouds

[Yann LeCun @ylecun]

Major difference in my mind:
- an engineer, given a problem, invents and tries multiple solutions and stops when the solution is good enough. The goal is product innovation and shipping.
- a scientist asks new questions, proposes various new solutions, compares them (sometimes with old ones), and writes about it. The methodology must be sound or else peers will sneer. The goal is scientific breakthroughs and technological progress.

Both can be called "researchers". Many people can do both: these are activities, not identities.

Importantly, most product innovations are built on scientific breakthroughs and technological innovations that happened 2, 5, 10, or 20 years earlier.

[Chris Hadfield @Cmdr_Hadfield]

The moment the rockets fire, to cushion impact with Earth.
Six nitroglycerine rockets are triggered by a gamma-ray altimeter to fire just before we hit. Inside, we're strapped into crash seats, raised on shock absorbers.
Even still it's wildly violent, like 2 quick car crashes in a row (rocket blast, then impact). And if the wind is blowing us sideways, our Soyuz capsule tumbles end-over-end.
After 6 months of graceful weightlessness, it's a rude (but reliable) welcome home. Sometimes it starts a grass fire...
(photo from Mi-8 helo: @ingallsimages @nasa)

[Barbie-Enthusiast @Barbie_Enjoyer_]

Das ist so utopisch. Medianalter für das Kreieren von Nuklearwaffen war einfach 27.

Einfach mit den Jungs Nukes bauen.

Währenddessen man als Zoomer heutzutage keine coolen Jobs bekommt, da "Erfahrung" fehlt. Ich hasse Boomer und die Gerontokratie.

[Chris Combs (iterative design enjoyer) @DrChrisCombs]

MOAR CAMERAS IN SPACE

[Manfred Ehresmann @AstroEngy]

@Schmidtlepp Die Orbitdauer von 90 min im LEO passt grob, aber die Sonnendauer ist je nach genauer Orbithöhe zwischen 50-60 min am Stück, der Rest im Schatten.

[Manfred Ehresmann @AstroEngy]

@Slant3D Can only be a companion cube, finally!

[Caleb (OSH Cut) @CalebChamberla6]

When I design, I use two constraints:

1. Use metal parts from @OSHCutInc
2. Use components available on McMaster-Carr

The pair is like industrial legos. You can build incredible things, incredibly fast this way. Example:

[Manfred Ehresmann @AstroEngy]

@Slant3D Do it like booking com. Offer a 10% discount (or whatever is suitable for you) for non-refundable buy.

[Chris Combs (iterative design enjoyer) @DrChrisCombs]

Two E/A-18G Growlers collided in mid-air during an air show demo in Idaho

Absolutely incredible that all four were able to eject safely 🙏🏻

[Peter Beck @Peter_J_Beck]

for your enjoyment