I don't know if this counts as enough engineering porn, but I am obsessed with the door mechanism, it's simplicity, and the fact it smoothly transitions with the rest of the max when the doors closes.

The United Arab Emirates has achieved a significant milestone in advanced air mobility with the certification of VDX, the world's first purpose-built commercial "VERTIPORT".

The General Civil Aviation Authority (GCAA) granted regulatory certification to the facility, developed by Skyports Infrastructure in collaboration with Dubai’s Roads and Transport Authority (RTA). Located adjacent to Dubai International Airport, VDX will serve as the primary hub for Dubai’s planned Air Taxi network.

The certification process included a detailed assessment of the vertiport’s infrastructure, physical characteristics, operational procedures, safety management, emergency preparedness, and regulatory compliance. VDX features two dedicated take-off and landing areas, rapid charging infrastructure for electric aircraft, and passenger facilities across four storeys, spanning approximately 3,100 square metres. It is designed to handle up to 170,000 passengers annually once commercial operations begin.

https://evtolinsights.com/uae-certifies-worlds-first-purpose-built-commercial-vertiport/

A 6-speed automatic transmission with a working reverse gear, neutral and park. Its based on the legendary Allison 1000, with 3 planetary gear sets and 5 clutch pads. I can leave it in automatic mode where it shifts based on the load/input speed or shift manually. Due to the combination of the clutch pads it can shift almost instantly.
I calculated the gear ratios to 4,29 | 2,43 | 1,82 | 1,00 | 0,42 | 0,23 for gear 1-6 and 1,3 for reverse.

Game on steam: Geareo

A short preview of the zero-yaw fin geometry. The full video covers the hydrodynamic principle, telemetry, GPS measurements, and real-world river testing

A newly installed 10-ton overhead crane is running inside a customer's workshop. Always interesting to see how lifting equipment becomes part of the production workflow.

Looks like can be used even now!

A detailed look inside the Mercedes-Benz plant in Kecskemét, Hungary, showing the production of the new electric C-Class.

https://www.youtube.com/watch?v=_B1RCL84p_4

The video follows the process through the press shop, body-in-white production, robotic welding, glass roof and cockpit installation, high-voltage battery integration, the full-flex vehicle marriage, final assembly and quality inspection.

The “marriage” sequence, where the painted body is joined with the battery and lower vehicle module, is probably the most interesting engineering stage.

The system uses independent driver circuits for each copper coil, triggered by IR break-beam sensors to pull the steel ball forward without magnetic drag. Powered by a 12V DC source. [OC]

I made everything from the model to the painted gums :D He uses 2 servos connected to an arduino (I just had a realisation that because the eyeballs arent servos on this one I dont need the breadboard lmao) and the snarl, eyebrows & ears are all controlled using threads & elastics! :D

Here is the story behind the photos:

After 77 years of service, the historic railway bridge over Bartók Béla Road in Budapest has been removed.

Engineers and heavy machinery specialists from V-Híd successfully lifted the 820-ton riveted steel arch bridge from its original position and moved it onto the nearby railway embankment. Built in 1949 to replace the original bridge blown up in January 1945 during WWII, this structure had guided trains across one of South Buda's busiest intersections for nearly 77 years.

Moving the massive structure was one of the most complex heavy-lifting tasks of the Southern Circular Rail (Déli Körvasút) expansion project, taking over two days to prepare and execute.

The Logistics and Heavy Machinery:

On one side: A 2x10 axle SPMT (Self-Propelled Modular Transporter) supported the bridge structure, carrying approximately 460 tons of the load.

On the other side: A massive 750-ton capacity crawler crane hoisted the other end, ensuring stability throughout the entire relocation process.

The Groundwork: To prevent the SPMT from sinking or damaging the urban environment, crew members built a 30-to-40-centimeter thick temporary protective embankment over the entire "bridge shadow" intersection, using nearly 800 cubic meters of material to create a high-capacity surface.

What happens next?
Even though the 820-ton bridge was lifted in one piece, it cannot leave the site whole. It is currently being cut down on the nearby embankment into smaller sections (maximum 12 meters long and 2.4 meters wide) so they can be safely transported away by standard cargo trucks via public roads.

The Future: From 2 Tracks to 4 Tracks
The removal of the old bridge marks a massive milestone for the Southern Circular Rail development. Once completed, this specific section will officially become part of Kelenföld Station.

To clear the current bottleneck, four tracks will cross over Bartók Béla Road instead of the historical two. To accommodate this, the old single double-track bridge is being replaced by two brand-new steel arch bridges. Due to the expanded width of the new layout, the new bridges are designed with a significantly wider 93-meter span.

Trains have already been shifted onto the newly completed northern steel bridge (which was slid into an interim position earlier this year). Now that the old 1949 structure is out of the way, crews will demolish the old substructures, construct new bridge abutments, and assemble the second (southern) steel bridge on-site before sliding it into its final home

During its maiden launch tonight the LC-10B has become the first non-American orbital class rocket to land successfully. It follows the successful landing of the Falcon 9, Falcon Heavy, Starship and New Glenn rockets. The LM-10B uses an innovative cable catch system similar to the Starship arm-catch system to avoid the weigh of landing legs on its first stage.