However , in combat , the Hound Dog was expected to self - destruct in less than six hours .
As a result , the Hound Dog 's version of the J52 had a short operating lifetime of only six hours .
In combat , the Hound Dog was expected to self - destruct in less than six hours .
As a result , the Hound Dog 's version of the J52 had a short operating lifetime of only six hours .