Alexis TZ

Passionate about technology & techniques. Love🤖 ⚙️🔩🚀🛰✈️🛠 // aerospace Engineer. PhD. // @safranengines // Frenchsumorobot

[Alexis TZ @AlexisTheze]

@RERB Hello @ClientsRATP ! Il serait bien utile d’installer des stickers sur les vitres pour rappeler aux usagers d’utiliser des écouteurs et d’éviter de parler trop fort au téléphone :

[Ammanichanda @Arkasiraee]

A Tomahawk can sit sealed inside its launch canister for years. Its jet engine has never run, and its flight battery isn't sitting there permanently charged.

When the missile is finally selected, the ship supplies power, loads the mission details and wakes up a machine designed around the assumption that almost everything has to work correctly the first time.

Then it changes character completely. A dormant lithium thermal battery activates, and a Mk 135 booster burns roughly 146 kg of solid propellant to throw the 1.5 tonne launch package out of the ship.

Within a few seconds the wings are out, the booster is gone and a tiny Williams F415 turbofan has taken over. Once running, even the battery is no longer needed, a generator driven by the engine powers the missile's electronics.

The F415 produces only about 650 lb of thrust. That sounds nowhere near enough for something this heavy, but the engine isn't carrying the Tomahawk.

At cruise speed its small wings generate the lift, the turbofan only has to replace the drag. Roughly 500 kg of dense JP-10 fuel gives it the endurance to keep doing this for more than 1,000 km while flying extremely low.

Tomahawk has also kept getting smarter without changing that basic architecture. Modern versions can be retargeted after launch, loiter, and even send back an image from an area they pass over.

More than 2,300 have been fired in combat since 1991.

That may explain its longevity better than any specification. America has spent four decades upgrading the electronics, navigation and payloads inside Tomahawk because the machine underneath still works just fine.

With those upgrades, it remains one of the most capable weapons in the subsonic cruise missile class.

[航空自衛隊百里基地 @jasdf_hyakuri]

Bienvenue a la base aerienne de Hyakuri!ようこそ百里基地へ！フランスの疾風がついに日本に到着です！
#百里基地
#フランス航空宇宙軍
#ラファール #Rafale

[Eli Hughes @emh203]

yall thought I was throwin' horse shit around.

USB-C thumb screw is officially specified by the USB-IF Device working group

[devalopr @_devalopr]

Wild things are happening at the DARPA lift challenge.

That's 2 RC planes tied together to make a helicopter

Drones and helicopters can usually lift payloads upto 1X their own weight as payload.

DARPA wants drones that can carry 4X their own weight.

[Chris Combs (iterative design enjoyer) @DrChrisCombs]

I've been saying this for a long time (even though you didn't want to hear it)

But now the chorus of experts (and even Elon!) is growing louder with the admission that we are hitting the limit of what you can accomplish with 50-year-old tile technology

-You can redefine "rapid reuse" and build so many starships that you are fine with a one-month turnaround

-You can increase your safety margin to the point where you don't care if tiles fail (at the cost of payload)

-Maybe you get lucky with a new tile chemistry that is more robust (they are trying) but the same thing that makes the tiles work (lightweight and low conductivity) is why they are so brittle

As the article notes, this hasn't been a basic research priority for 30 years. And we're in a cycle where basic research funding is shrinking. 30 years ago we didn't need better tiles, so we didn't invest. This is what happens when you only put money into the problems of today.

Perhaps SpaceX gets bailed out with a material science hail mary and we speed-run 25 years of basic research into a novel solution in the next few years. Probably not though. It's gonna take a bunch of basic science and some really novel approaches to solve this problem.

[Elon Musk @elonmusk]

We’re sending a ship out to recover Starship

[Scott Manley @DJSnM]

One of the booths at Open Sauce had a team that were working on a drone which might compete in the Boom challenge.

[src @iamnotsrc]

pit stop in france

[The Aviationist @TheAviationist]

Scale model of @LockheedMartin Vectis allows comparison withF-35. The thing appears to be huge.

[Little Think Tank @L_ThinkTank]

[ 🇫🇷 FRANCE ]

🔸La France s’apprête à engager, pour la première fois, un A400M dans la lutte contre les incendies de forêt.

L’appareil sera doté d’un kit amovible lui permettant de larguer jusqu’à 20 000 litres d’eau, soit une capacité équivalente à celle de trois Canadair.

[Tomas Salvo @tomas_salvo22]

Since February, I've designed and built the world's fastest RC airplane in my college dorm, and that’s not clickbait. Reaper has a 5kg carbon-fiber frame, 250N turbojet, and flies at 500mph. New to X and will be going through the whole build here in the coming days.

#aerospace

[Safran Aircraft Engines @SafranEngines]

@SafranEngines et les forces armées🇫🇷 ont célébré les 40 ans de service du M53 motorisant le #Mirage2000. Fleuron de l’aviation de combat française, l’appareil a survolé le site de Villaroche puis s'est posé sur l’aérodrome de Melun-Villaroche. Le M53 cumule 2,5 millions h de vol

[Dassault Aviation @Dassault_OnAir]

Family celebration:
The entire Dassault family celebrated the successful first flight of the all-new #Falcon 10X today, Dassault’s most advanced business jet with range of 7,500 nm & speed of M 0.925. @DassaultFalcon

© #DassaultAviation - A. Daste

[ApoStructura @ApoStructura]

If she wasn’t working for Elon Gwynne Shotwell would be hailed as an incredible success story and the most powerful woman in aerospace.

Instead it’s radio silence from the media

[BFM @BFMTV]

Fin du Scaf: "Ce n'est pas la fin du monde non plus, la France sait faire des avions de combat", rassure Patrick Pailloux, délégué général pour l'armement

#BFM2

[OpexNews @OpexNews]

💥 Vous voulez savoir comment l’Europe rate un avion ?

Prenez deux avionneurs rivaux. Forcez-les à danser ensemble. Ajoutez l’Espagne pour faire bonne mesure. Mettez 100 milliards sur la table. Attendez 9 ans.

Résultat, ce lundi : le #SCAF est mort, enterré à Berlin à deux jours du salon ILA. Dans la ville où Wenders filmait ses anges pour Les Ailes du désir, le chasseur du futur n’aura jamais touché le ciel.

https://t.co/ShLfvBHvJV

[Nicolas Chéron @NCheron_bourse]

En France, depuis 50 ans, le coût d'un employé augmente plus vite que son salaire net.

Je n'ai pas les mots.

[Alexis TZ @AlexisTheze]

@annebauerbrux Enfin …

[распад и неуважение @VictorKvert2008]

Today, France confirmed that the new Ukrainian Dassault Mirage 2000-5F fighters will be equipped with long-range guided AASM bombs, giving Ukraine another powerful strike platform.

Each Mirage 2000-5F is capable of carrying six AASM-250 bombs.