#transonic — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #transonic, aggregated by home.social.
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Update no. 1 from the project: Nearly all important packages were updated with Python 3.14 in the same month /season as the release. Kudos to hardwork from @PierreAugier
https://legi.grenoble-inp.fr/people/Pierre.Augier/fluiddyn-autumn-releases-and-python-314.html
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#ThisMonthInFluiddyn - Nov 2024 edition
* #FluidDyn, #FluidSim, #FluidImage now works with #numpy 2 and #mpi4py 4.0.
* #Spack packaging recipes
https://foss.heptapod.net/fluiddyn/fluiddyn/-/tree/branch/default/misc/spack?ref_type=heads
* #Apptainer and #Guix packaging for FluidSim
https://foss.heptapod.net/fluiddyn/fluidsim/-/tree/branch/default/doc/apptainer?ref_type=heads
* Basic support for #Jax is part of #Transonic with v0.7.x
* #FluidImage v0.5.x has a number of improvements, such as work towards matching #UVmat (the MATLAB #PIV suite), new executors and a command `fluidimage-mean`
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Efficiency gains from engines will still be vital for the industry.
The most marked change in the appearance of #engines could be the return of the open #propeller.
The design dispenses with the #nacelle
– the cover
– to allow for a bigger fan that offers more propulsive force.Superficially, it will look like existing turboprop engines,
but with the ability to fly at Mach 0.8, or 80% of the speed of sound
– the same as current jet engines.#CFM, a joint-venture between America’s General Electric and France’s Safran, has said that its open fan #Rise engine could theoretically reduce fuel consumption and carbon emissions by 20%.
The company says it can reduce noise, which put paid to a previous prototype in 1986.
It will still have to persuade regulators and passengers that the engines will be safe if a blade breaks in midair.
As well as radical changes to airframes or engines, manufacturers are constantly looking for ways to salami-slice #fuel burn via small gains.
#Winglets, the curved tips of wings, were first introduced in the 1970s in response to the then oil crisis,
mimicking birds’ wings to reduce drag.The split winglets on the 737 family since 2014 can reduce fuel burn by as much as 2% during a long journey, according to the Seattle-based manufacturer Aviation Partners.
(For plane-spotters, they double as the easiest way to distinguish a 737 from an A320.)
Birds have had millennia to evolve the ideal features for efficient flight,
so aviation designers have constantly used them for inspiration.Airbus is experimenting with #gust #sensors on the front of the aircraft to register during turbulence,
with automatic responses from control surfaces of the wing,
similar to a bird’s constant adjustments to movements in the air.#Concorde, which flew on only a limited number of routes, was the last passenger plane in service with a truly distinctive design.
The supersonic jet, which had swept-back, delta wings, was retired in 2003.
#Boom #Supersonic, a startup, is testing the technologies for a proposed “son of Concorde” with a similar look.
That plane would only ever be a niche service, flying 80 passengers at a time on premium routes.
But there is a possibility that Boeing and Airbus take radically different approaches to the workhorses that carry billions of passengers each year.
If the manufacturers go in different directions, then passengers might start paying serious attention to plane design, says Addison Schonland, an analyst who tracks the industry at AirInsight.
“I don’t think we’ve ever had a situation before, to look at an aeroplane and say, ‘that’s completely different’,” he says.
“How will people react to seeing those novel shapes?”
(3/3)
#Airbus #JetZero #Delft #University #McKinsey #fuel #efficiency #Boeing #truss #transonic -
#ThisMonthInFluiddyn - Mar 2024 edition
Happy Easter folks 🐣! We are dropping this a little late.
🔹#FluidImage v0.4.3 is out. Versions 0.4.x contains API changes and new features like a new executor to support Windows, and reworked logs with #Rich progress bars.
https://fluidimage.readthedocs.io/en/latest/changes.html#release-notes
🔹#Transonic v0.6.4 is a bug fix release which works around a #Pythran compilation problem on Windows (in terminals other than Mingw). Related release of #FluidSim and #FluidFFT are out.
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🔹#FluidSim our #CFD package also gets pre-compiled #Pythran extensions in wheels!
🔹#FluidImage the scalable #PIV package gets its first release in many years, also gets wheels! Heads up for another minor release soon, with breaking changes:
https://fluidimage.readthedocs.io/en/latest/changes.html#release-notes
🔹All this was made possible by the new #Meson support in #Transonic
https://transonic.readthedocs.io/en/latest/packaging.html
and a bit of CI/CD stuff powered by #cibuildwheel
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#ThisMonthInFluiddyn - Jan 2024 edition
Plenty on the packaging front this time.
🔹Ported to #pdm as packaging tool for most of our projects.
🔹Trying out #pixi as an alternative to #conda / #mamba. Lock files are great, but we had some hiccups.
🔹#transonic has implemented an experimental support for #meson and #MesonPython. Unreleased and nothing final yet, but tests on #fluidsim and discussion at #Pythran is ongoing.
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It will be nice to keep you all updated in #FluidDyn (and its projects #transonic, #FluidSim, #FluidLab, #FluidFFT, #FluidImage, #snek5000, #FluidSimFoam ...). Something like
This ___ in FluidDyn
In which frequency would you like to have it?
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Mikoyan-Gurevich MiG-17F. The MiG-17 - NATO reporting name 'Fresco' - was the immediate successor to the Korean War era Mig-15 in Russian service. With a cleaner airframe and a crude but serviceable afterburner on the Klimov VK-1 engine, the MiG-17 was transonic in a dive (rather like the Hawker Hunter). Powerful gun armament (1 x 37mm and 2 x 23mm cannons) was optimised for bomber interception, but the aircraft proved a formidable opponent in Vietnam War dogfights against early F-4 Phantoms (which did not have a fixed gun armament) as they were far more agile. This preserved example is shown at the Rhode Island Air Show. #airshow #USA #RhodeIsland #aircraft #aviation #afterburner #fighter #avgeek #NATO #Russian #MiG #MiG17 #Fresco #KlimovVK1 #MikoyanGurevich #transonic #VietnamWar #airwarfare #F4Phantom #cannon #dogfight #photography #aviationphotography