Readers! Welcome. It’s Friday. Time to kick back with that cold beer and enjoy the weekend. Last Friday we started a new, Friday evening round-up of our favorite comments of the week. Yes, we read the comment section. Yes, we usually write back.
This week in the comments section everyone wanted to go on a fishing trip. Also: An airline pilot weighed in on jetstreams! And we found out that Duff Man has quite the thirsty.
I really hate to be that dbag trying to make a correction on an article, but the article regarding the BA 777 catching the jetstream and nearly breaking the speed of sound is pretty misguided. Here’s why. Sound is just like any other object of matter, meaning in this scenario, it travels at a speed relative to the wind as well. That means that the stated speed of sound 761mph, which actually varies greatly on altitude and temperature, is also benefitting for the jet stream. The speed of sound on that day was probably closer to 950mph. Above 28,000ft, airliners fly relative to the speed of sound. By this, I mean the crews decide how fast they go based on their mach number. A typical mach for a 777 would be .77-.83, meaning 77%-83% of the speed of sound. There is no scenario (within the limitations of the aircraft) that a 777 could ever reach the speed of sound. Sorry. I’ve seen this story floating around on a bunch of websites the passed few days and its kinda bugged me. I’m a 23 year old airline pilot and we get enough free time to write emails like this. Such a solid gig.