Greetings, readers! Now that Amazon has disabled its popular ebook lending feature, we're more committed than ever to helping you find the best ways to borrow FREE or save big on the Kindle books that you want to read. Kindle Unlimited and Amazon Prime Reading offer members free reading access to over 1 million titles, including Kindle books, magazines, and audiobooks. Beginning soon, each day in this space we will feature "Today's FREEbies and Top Deals for Our Favorite Readers" to share top 5-star titles that are available for KU and Prime members to read FREE, plus a link to a 30-day FREE trial for Kindle Unlimited!

Lendle

Lendle is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. As an Amazon Associates participant, we earn small amounts from qualifying purchases on the Amazon sites.
Transiting from Air to Space: Th... - Robert S. Houston

Transiting from Air to Space: The North American X-15 (NASA Historical Series)

Robert S. Houston
Air Force History and Museums Program (November 15, 2011) , English
14 ratings

The North American X-15 rocket-powered aircraft/spaceplane was part of the X-series of experimental aircraft, initiated with the Bell X-1, that were made for the USAAF/USAF, NACA/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. As of 2011, it holds the official world record for the fastest speed ever reached by a manned rocket-powered aircraft.During the X-15 program, 13 of the flights (by eight pilots) met the USAF spaceflight criteria by exceeding the altitude of 50 miles (80 km) thus qualifying the pilots for astronaut status. The USAF pilots qualified for USAF astronaut wings, while the civilian pilots were later awarded NASA astronaut wings.Of all the X-15 missions, two flights (by the same pilot) qualified as space flights per the international definition of a spaceflight by exceeding 100 kilometers (62.1 mi, 328,084 ft) in altitude.This book describes the entire X-15 program from conception through completion.

Genres for this book