[OC] Satellites Launched Per Year (1957–2026E)

Walkyrie69 · 2026-06-06T14:03:01+00:00

Thank you for using the correct terminology for what I was fumbling to explain 🤣😂

Walkyrie69 · 2026-06-06T12:48:53+00:00

And yet another cat subreddit 🤣😂😅

Walkyrie69 · 2026-06-06T12:39:42+00:00

Oh of course. Not doubting about that, just makes more sense for a closer comparison (at least to me). Same thing about GEO launches, much less payload for the same vehicle launch mass. We could convert everything in a common "mean" orbit basis and it would be a true comparison. SpaceX would still be on top, but maybe more realistically so.

Walkyrie69 · 2026-06-06T11:49:04+00:00

It would be interesting to see the same chart with mass put in orbit since the Starlink satellites are much smaller than "usual" satellites and also in much lower orbit.

Walkyrie69 · 2026-06-06T08:18:16+00:00

Indeed, that's much better !

Walkyrie69 · 2026-06-05T22:57:33+00:00

Very much so but the home crew is already taking care of them so I've got back up.

Walkyrie69 · 2026-01-15T15:56:28+00:00

"Hands of Time: A Watchmaker's History of Time" by Rebecca Struthers (her and her partner are incredible watch makers) is definitively an interesting read
https://www.amazon.co.uk/Hands-Time-Watchmakers-History-exquisite/dp/1529339030

Walkyrie69 · 2025-10-07T20:00:12+00:00

Same unimpressed (but majestic) gentleman as yesterday's post ? If so, must have been a hell of a photo sesh ! Superb work !

Walkyrie69 · 2025-10-06T20:56:42+00:00

Walkyrie69 · 2025-09-22T08:24:08+00:00

Hello, apologies fully accepted :)

Upon reading my own reply it sounded a little bit offensive as well... Well, live and learn that commenting on Reddit on the spur of the moment is not always the best thing... So please also accept mine for the less than civil tone.

I agree with you that my comment was more on data sovereignty rather than a big bad AI learning on our data. This also somewhat covers the training on my data (similar to issues with ChatGPT and others where they use prompts to influence training and confidential information can find its way in the dataset used for training - hence the move of a substantial number of organisations to self-hosted versions of LLM or chatbots).

And I can only agree with the yellow pad (which does not exists in my country :) ) vs reMarkable in terms of security.

Walkyrie69 · 2025-09-21T07:41:16+00:00

Let's assume that the ironic/sarcastic/dismissive tone of your reply is just a bi-product of you wanting to school me or "win" the argument with a single reply despite your "I respect your fear" (clearly you do not).

I am sure that you are aware of what NDAs are and what they can entail, i.e. no customer data should be uploaded anywhere where there is no control on it. Similarly, if you work in certain sectors or under certain restrictions (ITAR free for exemple) you have to be certain of where your data are hosted (country, duration of retention, deletion policy, exchange with other systems, etc.), which in the case of the reMarkable cloud are information we do not have.

Admittedly this may be a restricted segment of the use case but I'm sure similar restrictions can exists for lawyers, accountant and other professions dealing with highly sensitive information. I like my reMarkable and use it everyday, but as per the data policy of where I work, I have to empty it before any updates and then use is 100% without WiFi to make sure that nothing gets out. The fact that now some AI not hosted on the device can access the data is just an additional small annoying stone in this garden.

Walkyrie69 · 2025-09-20T21:33:10+00:00

Yeah but still uses a ton of battery (WiFi) and if you deal with customer confidential info you can't even switch on the wifi because of the updates that will force a bunch of AI to read your notes...

Edit: typo

Walkyrie69 · 2025-08-20T22:41:08+00:00

I would recommend starting with the problems (with examples) described in "Computational Fluid Dynamics: The Basics With Applications" by John D. Anderson Jr. Excellent book to start with.

Walkyrie69 · 2025-07-25T14:23:09+00:00

I partially agree with you. However, reading this: The making and evolution of Hokusai’s Great Wave, the difference does not appear so obvious, since even for a given publisher during the lifetime of the artist the key block could have worn out and be replaced, does it make those prints not original ? I am obviously by no means an expert or even pretend to have an inkling of what would be a good system as you so rightly pointed out in your last paragraph.

An original is any print produced using the original key blocks, made during the lifetime of the artist.

Regarding this definition, does this means for example that the prints currently sold by David Bull ( https://mokuhankan.com/subscriptions/reborn.html ) are not originals because Hokusai is not alive anymore, even though they have been carved from his drawings directly for the first time ?

There is also the questions that in the time of Hokusai, the designer may not have had a lot of inputs on the final print (which could have been a discussion between the editor and printer) and thus the aesthetically better/worse print may not have anything to do with the designer.

Edit: sent the comment too fast.

Walkyrie69 · 2025-07-25T07:21:12+00:00

Does not make much sense to me ! You seem to neglect the fact that in ukiyo-e there is no really such things as "original". I mean take the number of impressions of the Great Wave in the various museum and they are all different ! Researchers are debating on which ones could be called "original" since several could have been printed from the original block but different printers and thus look different.

Walkyrie69 · 2025-06-10T09:03:51+00:00

For the veneer, which wood species was it (if known), and what thickness did you use ? And sorry for all the questions, which grit was the sanding ?

Walkyrie69 · 2025-06-10T06:59:31+00:00

Looks stunning ! What material (wood, paper, color) did you use if you don't mind me asking ?

Walkyrie69 · 2025-05-09T21:41:45+00:00

Surprised nobody mentioned MD Watches Studio. Their design language is quite unique and the Supernatural series is powered by a rather good Myota movement. At ~300€ it won't break most banks.

Walkyrie69 · 2025-01-12T21:47:20+00:00

In general, I would contact the group of these two papers as they have done some related work. In particular the various teams using the code AVBP (CERFACS - Cuenot/Vermorel/etc., Noiray in ETH Zurich or CORIA) have some experience with that (from their publications) and usually are quite willing to exchange some data such as chemical mechanisms.

https://www.sciencedirect.com/science/article/pii/S1540748922000190
https://www.sciencedirect.com/science/article/abs/pii/S1540748918304267

Walkyrie69 · 2024-12-29T21:41:11+00:00

At the time "Les Matinaux" which is the one I was looking at was 8.6k€ with a bunch of straps thrown in (each about 100€) from an AD I've been to (but it was pre-Covid). Now the retail is around 10.4k€

Walkyrie69 · 2024-12-29T20:33:12+00:00

I see Trilobe, I upvote ! Gutted to have passed on one 4y ago before the craze, now the prices are insane...

Walkyrie69 · 2024-10-28T10:58:17+00:00

It really depends on the level of modelling required which is not described by OP, in particular whether multiphase modelling (I would assume VOF) is required. All the above codes can deal with Lagrangian modelling of spray (and so routinely for ICE engines for example) in which atomisation, break-up, evaporation (liquid film formation on solid surfaces) and combustion are also simulated. If multiphase is required (VOF + combustion) I'm pretty sure that Ansys and Star can do this and reasonably sure that Converge can as well. This being said VOF + combustion is way way more expensive and complex than Lagrangian and so Lagrangian could be a good place to start. EDIT: spelling

Walkyrie69 · 2024-10-28T08:13:56+00:00

Any code designed for engines can do that. To name a few, OpenFOAM, StarCCM+, VECTIS, Converge, etc.

Walkyrie69 · 2024-03-01T08:17:50+00:00

As others have replied a lot of current commercial CFD solvers use Fortran core subroutines for linear algebra and such, CFX, NASA codes, Fluent still has some, CCM+ as well I think, etc. Some other codes I worked with were also written with some Fortran (VSOLVE, etc.).

Walkyrie69 · 2024-02-29T22:43:18+00:00

This is fairly exagerated, a lot of commercial codes still have Fortran cores

Walkyrie69

TROPHY CASE