David Castañeda @davidacv
Science lover ⚗️🔭🧪🧬 Aerospace engineer, PhD ✈️🚀🛰👩🚀 Cyclist🚲 Joined May 2021-
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David Castañeda retweeted
The cheapest wind tunnel of all: A van & a splitter plate! It doesn't match Reynolds, or Mach number, but it tells you how a control system might work for the most advanced wing concept you've never heard of…
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David Castañeda retweeted
This is the NASA Ames low speed wind tunnel, the biggest in the world. It can fit full sized planes and takes up to 104MW of power to run! But why use a wind tunnel, and what problems do you run into when trying to make it smaller? Let's go deep. The wind tunnel thread…
David Castañeda retweeted
Incense smoke behaving like a liquid
David Castañeda retweeted
鳥類に着想を得た飛行ロボット (脚付ドローン) 鳥のように動く脚で歩いたり、飛び跳ねたり、地上から空へ飛び立つことができる youtu.be/rFKmdj_3YQk #RAVEN #flying_robot #Biorobotics #biomimicry #バイオミミクリー #生物模倣 #鳥型ロボット
David Castañeda retweeted
How to fold a paper plane with a launcher x.com/visualfeastwan…
David Castañeda retweeted
Vortex stretching 🌪️ is thought to be a key mechanism by which turbulence passes kinetic energy down the turbulence cascade. Here is a vortex being stretched in our lab.
David Castañeda retweeted
¿El mejor video amateur de la captura? x.com/Cosmo_556/stat…
David Castañeda retweeted
Bf-109. Vórtices. 🔊 Military Aviation Museum.
David Castañeda retweeted
A vertical wind tunnel moves air up in a vertical column, enabling gravity to be countered by drag instead of lift, as experienced by a skydiver at terminal velocity. And allowing spectacular air dance shows. [📹 dream_scene_in_the_world] x.com/i/status/18421…
David Castañeda retweeted
Superconstellation. En los vuelos de línea nocturnos se informaba al pasaje que las llamas que veían salir por los escapes eran lo más normal en ese tipo de motores. Buenas noches. 🔉 Créditos a su autor.
David Castañeda retweeted
Turbulence occurs spontaneously in swimming pools
David Castañeda retweeted
This was so fascinating. I had a teflon knitting needle on @iss and charged it by rubbing with my Russian fur boots. Then I directed water droplets from a syringe towards the charged knitting needle and this is the resulting dynamics. The droplets, due to charge forces, go…
David Castañeda retweeted
Da Vinci described the heart in his notebooks as being "vortex oriented" Sound on
David Castañeda retweeted
🌊 #FluidFriday: Traffic Shockwaves 🌊 Traffic jams that start and stop for no reason are frustrating. See Joe Miroe’s movie of traffic shockwaves. Cars experience sudden changes in velocity, similar to density changes in #fluids, creating #shockwaves. @PhDVoice @PostdocVoice
David Castañeda retweeted
Aladding wingsuit [📹 alladin_skylab] x.com/i/status/18144…
David Castañeda retweeted
View of wingtip vortices reconnecting with one another! 📹: u/Bihema
David Castañeda retweeted
Propeller vortexes made visible in humidity
David Castañeda retweeted
A #DDay80 drone show. Wow. This is cool.
David Castañeda retweeted
In high vacuum the mean free path for air molecules gets so large that normal aerodynamics breaks down. Shown is the path of air molecules through a turbomolecular pump in high vacuum, at extreme RPM. Tomorrow we'll go even further, in the Vacuum System thread!
David Castañeda retweeted
A Tesla valve is a fixed-geometry passive check valve. It allows a fluid to flow preferentially in one direction, without any single moving part.
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