I was watching a SciFi tv show where large objects had an outer speed limit of 18000 kph and that got me wondering what things in everyday life are faster than even 500 kph.
I know bullets can be fast, but they are not exactly everyday life (at least in my life).
I included mass for obvious relativistic reasons.
Do you know any rough numbers?
According to this document, the Trent XWB from Rolls Royce has a fan diameter of 3m and a reference rotational speed of 2700 rpm for the low pressure stage, which would result in a blade tip speed of 424.1 m/s or 1526.8 km/h according to this calculator
I know that some generator turbines go ~3600 rpm
If my (admittedly super rusty) math is right if we assume a radius of 1 meter which would mean a circumference of ~6.28 meters. In that case the tips of the turbines would be moving:
6.28 * 3600 =22,608 meters per minute.
Please feel free to rip up my math as I’m going on little sleep at the moment.
Search-fu gives me 377 m/s or 1357 km/h.
Gotcha, so I wasn’t too far off.