from Wikipedia:
Quote:
|
The North American X-15 rocket-powered aircraft was part of the X-series of experimental aircraft, initiated with the Bell X-1, that were made for the USAF, NASA, and the USN. The X-15 set speed and altitude records in the early 1960s, reaching the edge of outer space and returning with valuable data used in aircraft and spacecraft design. It currently holds the world record for the fastest speed ever reached by a manned aircraft.[1]
|
This work is assumed to be in the Life+70 public domain OR the copyright holder has given specific permission for distribution. Copyright laws differ throughout the world, and it may still be under copyright in some countries. Before downloading, please check your country's copyright laws.
If the book is under copyright in your country, do not download or redistribute this work.
To report a copyright violation you can
contact us here.