In article et,
"Steven P. McNicoll" wrote:

"Chad Irby" wrote in message
om...

A suborbital flight, and repeat it with the same vehicle in a 14 day
period?

Funny, I can't remember hearing of such a thing.

The capability was there. Individual X-15s were flown within two week
periods a number of times and the craft was flown above 100 km.

....you haven't read the actual rules yet, have you?

The X-15 carried one guy (the rules for the X-Prize require that the
craft has to be able to carry three, although it only has to have the
equivalent ballast for the actual prize flight).

The two semi-qualifying (100 km+) X-15 flights took place over a month
apart, in the #3 airframe.

--
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Slam on brakes accordingly.