"Bill Shatzer" wrote in message
...

"Steven P. McNicoll" wrote in

The F-102A was area ruled.

I had thought that was exactly the problem with the F-102;
that it was NOT area ruled.

My quick and dirty reference (the one which most readily
falls to hand) indicates that the F-102 had a max speed
of 825 mph with a J57-P engine,

The F-106 is listed with a max speed of 1,530 mph with the
the same J57-P engine.

Something has to be going on there with the aerodynamics to
account for an 85% increase in speed with essentially the
same engine producing essentially the same thrust.

They didn't use the same engine, the F-102A and the F-106A were both ruled
but the F-106A had dry what the F-102A had with afterburning.

F-102A:
One Pratt & Whitney J57-P-23 turbojet, 10,200 lb.s.t. dry and 16,000 lb.s.t.
with afterburning, or a J57-P-25, 11,700 lb.s.t. dry and 17,200 lb.s.t. with
afterburning.

F-106A:
One Pratt & Whitney J75-P-17 turbojet, 17,200 lb.s.t. dry and 24,500 lb.s.t
with afterburning.