Experimental B-39 bomber, B-29 with P-38 Allison engines
Key Facts
Abbreviation
XB-39
Pronunciation
/ɪkˌspɛrɪˈmɛntəl bi 39 ˈbɑmər bi 29 wɪθ pi 38 ˈælɪsən ˈɛnʤənz/
Category
Governmental
Related Field
Military