Random Engineering, Physics, ..., Concepts and Ideas

[Rodread]

The more reliable power harvesting method for drones is
Vampire Drones (Sorry about the terrible video thumbnail)

AI News: GPT4o Mini, Vampire Drones, New Jailbreak, LLaMA 400b, Robot with HUMAN Hands

South Denmark Uni made a drone which attaches to a power line for an inductive charge when it’s hungry

[Windy_Skies]

Tech Topic - 20190226 - Adam Explains the Effort to Waterproof Electronics on the Makani M600

Tech Topic - 20180618 - Ben Introduces a Variable Pitch Rotor Design for Makani M600

Designing Wing’s Aerodynamic Hook

Designing Wing's Aerodynamic Hook

https://www.reddit.com/r/environment/comments/1ffpuzr/manufacturers_have_no_strong_incentive_to/

Duralex makes glassware out of tempered glass, which is very durable. Idk if their products would be a perfect fit for a bar, but they’re worth checking out.

Superfest

Smashing idea: how East Germany invented ‘unbreakable’ drinking glasses

[Windy_Skies]

Alex Slocum reuploaded his 2.75 FUNdaMENTALs of Design lectures. Course contents, including calculation spreadsheets, are on: FUNdaMentals of Design - MIT MEDICAL DEVICE DESIGN

[Windy_Skies]

North Sails 3DL Video

We’ve developed beyond laminates to 3Di technology. North Sails 3Di exemplifies outstanding value with industry leading shape holding and a longer service life compared to other sailmaking technologies. Proprietary engineering and construction methods allow 3Di sails to maintain their shape to an unprecedented level. Superyachts now use one set of 3Di sails for racing, cruising, and deliveries. Volvo Ocean Race teams trust one mainsail for 35,000+ miles around the world; they formerly used two or three string laminate sails. Circumnavigators are using 3Di sails for multiple laps. Do the math, and you’ll find that 3Di sails have a lower cost of ownership than any other sails in the world.

North Sails has become the world leader in sailmaking through an ongoing commitment to making sails that are faster, lighter and longer lasting than any other sails in the world. Whether you race or cruise, North Sails is committed to designing and building sails that are just right for you! When performance counts, the choice is clear.

[batlabat]

The video is a bit old. Patent is now expired, I don’t really know if other sailmakers are doing the same now US6260497B1 - Sail and method of manufacture - Google Patents

[batlabat]

To make things clearer 3DL in the video is an older North-Sails technology where the sails were laminated. Performances were good, but sails were fragile. Northsails is now using 3Di technology (as in Windy text above) which is “monolithic” and shows better durability and better stiffness/weight.

Here is 3Di patent which has been expired for 2 years apparently. US8506739B2 - Method of producing sails using reinforced, formed fabrics - Google Patents. Patent was not by NorthSails but for exclusive use.
Le 3Di à la loupe dans le nouveau Course Au Large

[batlabat]

3DI is now reaching windsurfing, but it seems it has not been used for kitesurfing yet. https://www.youtube.com/watch?v=ii3nveMxV20