XB-70 vs B-2

Scott Ferrin wrote:

You could make a case for a Sam being able to knock out any airplane. So why
build any at all?

Assuming B70's were built and upgraded umpteen times by now,
what do you think the results would be with a re-engine of the six pack with a
modern supercruise engine such as a F119?

Bob

Actually I'd be surprised if the F119 powered one wasn't *slower*.
The J93 was designed for Mach 3 and high altitudes. The F119 is not.

I realize that airflow and inlet geometry are critical for a high
mach plane, but what would be different in the guts of the engine?
Did the XB-70 burn a non standard fuel like the SR71?

I suppose my point was expanded range or payload using the
F119. Who knows, maybe there is a orphan XB70 made out
of spare parts laying around groom lake somewhere.
Might be an interesting platform to test some of the new high
tech aero spike or pulse engines.

Bob



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