Seems unlikely to me that a new fleet of supersonic aircraft would use engines from a bomber that first flew in 1952[1]. I am assuming that modern engines would

Seems unlikely to me that a new fleet of supersonic aircraft would use engines from a bomber that first flew in 1952[1]. I am assuming that modern engines would not have "similar particle emissions". For example, I would imagine that they wouldn't have afterburners. [1]: https://en.wikipedia.org/wiki/Avro_Vulcan https://en.wikipedia.org/wiki/Avro_Vulcan