4 ms·
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by dvh 3y ago
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- p1mrx 3y agoNASA discovers new source of coal.
- adolph 3y agoThanks! One of the interesting features are the screws used. The limiting factor with many fasteners – including those with the classic Phillips drive system – is the amount of torque that can be put through it. A greater torque requirement has traditionally meant either that larger fasteners have had to be used, or more of them. Either way, significant weight is added to a joint. . . . [T]he ACR Torq-Set Drive System . . . is an offset cruciform drive system that allows more torque to be applied. https://www.eurekamagazine.co.uk/content/technology/can-phillips-top-what-has-become-the-most-famous-screw-thread-in-the-world/ https://www.eurekamagazine.co.uk/content/technology/can-phil... Torq-set bits are similar to Phillips-head bits, but the four arms of its central cross are offset from each other. This design helps to prevent tampering, and makes the screw ideal for use in aerospace applications. https://www.grainger.com/category/tools/sockets-bits/screwdriver-bits?attrs=Bit+Style%7CTorq-Set&filters=attrs https://www.grainger.com/category/tools/sockets-bits/screwdr...
- grecy 3y agoI wonder how it compares to every Canadian's favourite, the Robertson screw[1] ? [1] https://en.wikipedia.org/wiki/Robertson_screw https://en.wikipedia.org/wiki/Robertson_screw
- adolph 3y agoWell, (in my non-material science engineer mind) you can use forced surface area as an approximation of the theoretical maximum torque that can be applied. The Robertson surfaces are not perpendicular to turning force and has less surface area at the outermost part of the screw. Thus I’d estimate that offset cruciform is superior in that regard. On the other hand, the Roberson might be cheaper to produce and have sufficient torque for a particular application so Torq-set might be overkill.
- MikusR 3y agoHow much tampering happens in space?
- dylan604 3y agoI'm guessing it's a bullet point for use more on terra ferma. Like those stupid keys for light switches in public places, vending machines, etc. They are ridiculously easy to obtain keys that work if someone is inclined. It's just not something so common that everyone has two or three in various drawers in their home
- User23 3y agoI keep a handcuff key on my keychain for giggles. It caused me a small amount of trouble when I showed up for jury duty.
- gmiller123456 3y agoVery little. Which proves these screws do their job.
- davrosthedalek 3y agoI don't see no f??king ice giants.