r/EngineeringPorn

▲ 3.0k r/EngineeringPorn+2 crossposts

Ultra-high-resolution Computer Simulations Reveals How CO₂ Travels Around the Planet

NASA’s ultra-high-resolution computer simulations vividly show how carbon dioxide emissions from cities, power plants and wildfires rise into the atmosphere and are rapidly transported across regions and oceans by winds and weather systems. The visualizations also reveal a striking day–night cycle: vegetation absorbs CO₂ through photosynthesis during daylight and releases some through respiration at night. By tracking these sources and natural carbon sinks, the models help scientists understand where CO₂ comes from, how it moves through the atmosphere, and how roughly half of human-generated CO₂ is absorbed by land and oceans, while the remainder accumulates in the atmosphere and contributes to global warming.

Terrifying NASA Video Shows America Spewing CO2 Into Atmosphere: https://futurism.com/the-byte/nasa-video-america-co2-atmosphere

watch CO₂ move through earth's atmosphere: https://science.nasa.gov/earth/watch-carbon-dioxide-move-through-earths-atmosphere/

Carbon Dioxide - Earth Indicator: https://science.nasa.gov/earth/explore/earth-indicators/carbon-dioxide/

u/AquaAlliance — 16 hours ago

Hydrogen-powered JCB Hydromax sets 406.320 mph world land speed record

British engineering giant JCB has set a new world land speed record of 406.320 mph with its hydrogen-powered JCB Hydromax.

The car recorded the average speed 400.623 mph in its first run this morning across the Bonneville Salt Flats, and 412.135 mph on its second run, giving the average of 406.320 mph - the fastest a hydrogen internal combustion car has ever travelled.

Driven by Wing Commander Andy Green OBE, the twin engined, 32-foot car completed the two runs required under FIA rules - one in each direction within an hour - comfortably beating the previous FIA-officiated hydrogen internal combustion benchmark of 185.5 mph set by the BMW H2R in 2004. The record is subject to official ratification by the Fédération Internationale de l’Automobile (FIA), the global governing body for motorsport.

In doing so, JCB Hydromax surpassed the 350.092 mph world diesel land speed record set by JCB Dieselmax — also driven by Green, on the same salt, in August 2006. Twenty years on, JCB has beaten its own benchmark with an engine that produces no CO₂ at the tailpipe.

The speed also exceeds the 303 mph hydrogen fuel cell mark — making JCB Hydromax the fastest hydrogen-powered vehicle of any kind in history.

https://www.jcb.com/en-AE/explore/insight/news/2026/08/hydrogen-powered-jcb-hydromax-sets-406.320-mph-world-land-speed-record/

▲ 27 r/EngineeringPorn+5 crossposts

4-servo quadruped robot walks upside down on a magnetic ceiling — passive magnets, no adhesion tech (open-source platform)

Turns out you don't need active adhesion (vacuum, electromagnets) for ceiling locomotion — passive permanent magnets in Quaddle open source robot's foot tips are enough, as long as the gait is designed for holding contact upside down instead of just an inverted version of the ground-walking gait.

The interesting part wasn't the magnets, it was the gait — same open source robotics platform OpenCat, same 4 servos, just a different motion profile. Planning to open source this gait's code before it ships too, so anyone curious can adapt it, not just read about it.

Anyone else working on non-standard locomotion modes (climbing, inverted, whatever) — what ended up being the hardest part for you?

youtube.com
u/PetoiCamp — 1 day ago

is this actually correct enginering or just convincing AI slop? somethings feels off here

saw this short and im honestly not sure if the explanation makes sense or if it just looks technical enough to sound right.
the graphics look kinda AI generated and some of the claims feel a bit too neat/simple. im not an expert on this specific system though so maybe im completly wrong.
anyone here who actually knows this stuff? curious what parts are legit and what parts (if any) are just AI slop.

youtube.com
u/Viggosdeli — 2 days ago
▲ 1 r/EngineeringPorn+4 crossposts

I spent hours redesigning my MOZA LED effects with SimHub + AZOM. Here's the result.

I wasn't completely happy with the default MOZA LED behavior, so I ended up spending quite a while customizing nearly every lighting effect using SimHub together with the AZOM plugin.

The goal wasn't to make them brighter or more distracting—it was to make them more informative while still looking clean and premium during racing.

I used AI as part of the creative process to design and refine some of the animations, then adjusted them manually until they behaved the way I wanted in-game.

I'm genuinely curious what community members think:

• Do you keep the default LED effects?

• Have you customized yours?

• What's the one telemetry effect you'd like to see implemented?

For anyone interested, I recorded a short showcase of the finished animations:

https://youtu.be/obsWwYiNT-Y?si=6wXn2HnplZh5ybZj

Constructive feedback is very welcome—I already have ideas for a V2.

youtu.be
u/BigUpstairs6349 — 3 days ago
▲ 1.2k r/EngineeringPorn+7 crossposts

A hydropowered scoopwheel used by the ancient Romans at the Rio Tinto mines in Spain. To remove water from deep underground mines, the Romans used no less than 16 wheels working in pairs and stacked above one another. The wheels could lift water from 80 meters below the surface

u/Suspicious-Slip248 — 6 days ago
▲ 970 r/EngineeringPorn+3 crossposts

25 years ago on Aug 13, 2001, the experimental Helios Prototype a solar powered, remotely-piloted aircraft developed under NASA's ERAST program reached an altitude of 96,863 feet (29,524 m), achieving a world altitude record for sustained horizontal flight by a winged, propeller-driven aircraft

u/SwiPerHaHa — 7 days ago
▲ 21 r/EngineeringPorn+5 crossposts

A 4-servo quadruped that reconfigures into 5 different locomotion modes (biped, tricycle, bar-spin, 4WD, water-paddle)

Been testing how much mechanical diversity I can get out of Quaddle robot by changing the attachment instead of adding more actuators. Same 4 servos and the same OpenCat firmware the whole time — what changes is the attachment (3D-printed, mostly) and which gait is loaded for it:

- Biped: printed base clips on, switches to two-legged walking

- Tricycle: printed wheel mount + a bearing wheel, front legs go passive and drag

- Bar-spin: printed grippers clip onto a bar, full 360° rotation gait

- 4WD: wheel kit replaces all 4 legs, standard car driving

- Water-paddle: printed footpads, paddling gait (works, though we've sunk it twice)

This is pre-release — not in production yet, but I wanted to share this fun experiment since keeping the servo count fixed while switching locomotion modes was a fun constraint to design around. The gait codes and the 3D-printed parts will be open sourced.

Happy to go into Quaddle's gait/kinematics details in the comments if anyone's curious.

youtube.com
u/PetoiCamp — 5 days ago
▲ 994 r/EngineeringPorn+2 crossposts

Ever wondered what the inside of a high-power IGBT module looks like?

Thought this might be interesting to some of you.
This is the inside of a failed Fuji Electric 6MBI75SS-120 IGBT module (1200 V / 75 A).
It’s quite impressive to see the number of aluminum bonding wires used to connect the dies to the power terminals.
The module was already dead, so I decided to open it up rather than throw it away.

u/No-Childhood320 — 8 days ago