HackerTrans
TopNewTrendsCommentsPastAskShowJobs

rnabel

no profile record

comments

rnabel
·il y a 3 ans·discuss
It looks like the current road tax frameworks of many countries use either CO2 emissions or car price as a main factor for road tax, which presumably correlates with weight - except for EVs. Seems like at least the CO2 bit will have to change with EVs becoming more mainstream.
rnabel
·il y a 3 ans·discuss
Yes, the noise level is measured on the ground directly below the flight path of the plane.

Interestingly, it’s not just the volume but also the pattern of the boom that can be altered by changing the design of the plane. There’s a great discussion of this here: https://www.elidourado.com/p/50-years-supersonic-ban (Scroll down to the images of the sound wave)