Pratt & Whitney says its ground-test F-35 Joint Strike Fighter engines have logged more than 4,000 system development and demonstration hours. The F135 jet engine is slated to power the F-35 in flight tests to begin next year.
B-21 Temporary Shelters Could Also Shelter B-2s
March 5, 2021
The Air Force's experimental runway shelter for the new B-21 bomber is large enough to cover it or the B-2, and therefore reveals no information about the dimensions of the new aircraft. Two such shelters will be evaluated, but the maker of the second version hasn't been chosen, yet.