- Ukraine downed a Russian Su-34 fighter jet over Kursk amid an ongoing territorial push.
- The Su-34, worth around $36 million, is Russia’s most efficient fighter bomber with advanced tech.
- Ukraine has previously held long kill streaks with Russian Su-34s.
Okay im ignorant on this one, why do trains use ball bearings? And is this for traditional trains or high speed?
Pretty much anything with a turning wheel and axel relies on some sort of bearing system. That means traditional and high speed rail systems both require them.
There are some differences in types of bearing depending on what you use your rail system for. In the US we utilize antiquated plain bearings that are relatively easy to manufacture, but that’s because our rolling stock is ancient compared to most countries. Mainly because we rely heavily on trucks for transporting most goods and haven’t bothered investing in our aging rail network.
In Russia they have a much more modern rolling stock, as everything they ship goes through their rail network. Their rolling stock utilizes angled/slanted roller bearings, which can vastly increase their weight capacity, speed, and can double to triple their lifespan. The only problem is that they are complicated to manufacture.
This has really peaked my interest. Are these the types of bearings you are referring to? I’d like to read more but not misinform myself. https://www.savree.com/en/encyclopedia/tapered-roller-bearing-rail
Yep, that’s a tapered/angled roller bearing. They’re conceptually a pretty easy concept, but deceptively hard to manufacture