posted on Aug, 8 2014 @ 07:38 AM
a reply to: Domo1
As the airframe heated up as speed increased (air friction) the body of the aircraft would expand. Since the fuel tanks on the aircraft are usually in
the wings/body, basically everywhere they could get an open space, this area would also expand since it was in relative closer proximity to areas of
A traditional "tank" like on a car would expand and crack under these conditions and any rubber gaskets would fail under the conditions the aircraft
was subjected to, so they had no choice but to "let it leak" so to speak.
I'm not an SR-71 expert but I believe they would refuel shortly after take-off to replenish any lost fuel due to leaking.
And yes, JP-7 won't just ignite spontaneously so the leaked fuel isn't a huge danger while it's sitting on the ground.