When I was a mere child in the early 50s, I recall seeing jet aircraft making very long contrails in a clear sky. I later figured out these were B-52s during test flights out of the Boeing plant in Seattle. B-52s flew at 50,000 feet. Most airliners at that time were flying at 35,000 feet, where contrails are less persistent.
When I was a mere child in the early 50s, I recall seeing jet aircraft making very long contrails in a clear sky. I later figured out these were B-52s during test flights out of the Boeing plant in Seattle. B-52s flew at 50,000 feet. Most airliners at that time were flying at 35,000 feet, where contrails are less persistent.
Interesting, I was a decade after being born in 58