This is a new subsection on SierraFoot. Ideally it will be updated to
report events and milestones in X-15 history exactly 50 years after
they occurred, gradually rebuilding the chronology of the X-15 flight
research program and illustrating with photos and documents whenever
possible.
In practice the goal of posting exactly 50 years after actual events
will be difficult to achieve due to limitations on time available to
this web site's author. Even as the first entry is posted for May 9,
1955 there are several milestones dating back as far as 1952
to be documented in additional web pages at a later date.
My thanks go to the NASA Dryden
History Office for the opportunity to copy North American Aviation's
original design proposal, as well as many other documents on X-15
history.
