Will have to look into this little episode and find out a little more. I’m guessing that the XB-51 had some technical issues.
I have to admit that I always thought that the Canberra was the best choice. It may not have been setting the world on fire performance wise, but it was a good, solid design that proved very adaptable. I can’t see the B-51 doing what the 57 did. Don’t NASA still have a couple flying for atmospheric research?