bouchard

I found "Modern Fortran: Building Efficient Parallel Applications" to be a pretty good read. See https://milancurcic.com/book/

Also https://fortran-lang.org/en/ is a good hub to find more information, packages, etc.

I don't believe anybody would argue against their reluctance for old FORTRAN 77 code; it's a PITA to deal with.

The central issue is that their experience with the old Fortran doesn't translate to modern Fortran; they are two different beasts.

I get the sentiment, and there's definitely a lot of work to be done and actions to be taken by the right stakeholders.

But just to put things in perspective; all of aviation contributes up to only 2.5% of all global emissions (both direct and indirect).

I understand the lack of appetite for old FORTRAN 77 code, but PRIMA is a modern Fortran implementation.

You only need Python's ctypes module to load the compiled Fortran library thanks to Fortran's iso_c_binding module.

Using f2c as suggested seems like a worse alternative, not a solution.

Depending on the province, "Engineer" and/or "Professional Engineer" are legally restricted titles.

You can't use the title (neither can your employer) unless you are licenced to do so.

I wonder how it compares to taichi-lang which also came out of MIT CSAIL and doesn't suffer from this "Business Source Licence" nonsense.

I've recently started using Taichi (https://taichi-lang.org/) for numerical codes and the fact it doesn't try to trick you into thinking it's numpy is a nice "feature". ;)

He didn't work on dams...

> A company statement said that Mr Wang worked on batteries for the utility's Center of Excellence in Transportation Electrification and Energy Storage (CETEES), which develops technology for electric vehicles.

> They've always prioritized fidelity of the actual simulation. It's as realistic as they can get it.

Yeah, not really. The models are tuned until it feels like the actual aircraft which is good, however it wasn't until just two years ago [0] that Austin Mayer re-discovered some of the most basic models used for aircraft performance (fixed- and rotary-wing).

He's got a good instinctive way of thinking about it that's for sure, but he seems to have skipped some introductory material during his degree.

[0] https://m.youtube.com/watch?v=WROEk_Jv33w

Their website isn't exactly up to date.

Dr. Patrick Nathen who published Lilium's white paper detailing their aircraft architecture has left his VP role and is now an engineer within their flight mechanics team [0].

[0] https://www.linkedin.com/posts/dr-patrick-nathen-1a0840b3_en...

Just yesterday Unpaywall found a publicly available copy of a 1980s article I was looking for and which Sci-hub didn't have.

Matlab: optimization and global optimization toolboxes.

Python: PyOptSparse with IPOPT (and NSGA-II, although not the best implementation) and scipy.optimize.

I use them for the Design Optimization of aircraft with multiple non-linear constraints and sometimes multiple objectives.

I'm pretty sure that's what is recommended here in Québec, Canada when there's no sidewalk.

Seems weird that it wouldn't also be the case in the US.

Just realised you were answering to another comment and not its parent... Disregard my previous answer.

Canada is part of the Five Eyes and might share what they find if thought useful.

Anyway, the point is that the website claims canadian courts can lawfully demand your password/key (key disclosure law) even though the reference cited (Wikipedia) says the exact opposite.

> In Canada key disclosure is covered under the Canadian Charter of Rights and Freedoms section 11(c) which states "any person charged with an offence has the right not to be compelled to be a witness in proceedings against that person in respect of the offence;"[10] and protects the rights of individuals that are both citizens and non-citizens of Canada as long as they are physically present in Canada.[11]

>In a 2010 Quebec Court of Appeal case the court stated that a password compelled from an individual by law enforcement "is inadmissible and that renders the subsequent seizure of the data unreasonable. In short, even had the seizure been preceded by judicial authorization, the law will not allow an order to be joined compelling the respondent to self-incriminate."[12]

>In a 2019 Ontario court case (R v. Shergill), the defendant was initially ordered to provide the password to unlock his phone. However, the judge concluded that providing a password would be tantamount to self-incrimination by testifying against oneself. As a result, the defendant was not compelled to provide his password.

According to the Wikipedia article cited when "Canada" is clicked, key disclosure laws don't apply which is the opposite of what the site claims.

Or am I misunderstanding something here?

The rotorcraft used for the Bin Laden raid weren't standard Black hawks.

The modifications probably required huge trade-offs in cost/performance and might still not be quiet enough for daily use in urban/residential areas.

What you fail to take into account is that with a privatized postal service, non-profitable routes will stopped being serviced even if it's essential to the population.

Moonshot doesn't even begin to describe how incredible of a feat that would be.

Unsteady aerodynamics alone are one hell of a challenge.

You can definitely chat with yourself in Messenger. (also Slack)

It's easier to look for conditions we already know can lead to life.

ToTok and TikTok are two different apps. ToTok is used in the UAE where Whatsapp and others are banned.

Have Blue was the POC for the F-117, it wasn't used in actual operations. It was a test platform to demonstrate the concept's stealth capabilities and its ability to fly despite its non-conventional shape.

I believe it's called the "wait calculation".

> is that the only way? or do alternatives exist?

Are there legitimate alternatives to the scientific method?

While it's not one of the original prizes, the laureates are still selected by the same institution as those in physics and chemistry, The Royal Swedish Academy of Sciences.

> In 1968, the Sveriges Riksbank established the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel. The Royal Swedish Academy of Sciences was given the task to select the Laureates in Economic Sciences starting in 1969.

[0] - https://www.nobelprize.org/the-nobel-prize-organisation/priz...

There's also the issue of cost, which can go up real quick in some fields.

It can be hard to justify expensive software which might not always be able to accomplish whatever you're aiming to do.

Here's the product page: https://www.bellflight.com/products/bell-360

I'm curious about what the supplemental power unit consists of.

> this is an ad, right?

It's not advertising some other product/service, it's simply asking to be cited when used in publications.

And it can be silenced by running one command...