Richard N Lost in the Sky Senior Member Joined 18 June 2009 Messages 1,411 Reaction score 2,487 21 September 2018 #1 Hypersonics Before the Shuttle: A Concise History of the X-15 Research Airplane by Dennis Jenkins Link to a downloadable pdf: https://spaceflight.nasa.gov/outreach/SignificantIncidents/assets/hypersonics-before-the-shuttle.pdf Attachments HBTS.JPG 44.4 KB · Views: 85
Hypersonics Before the Shuttle: A Concise History of the X-15 Research Airplane by Dennis Jenkins Link to a downloadable pdf: https://spaceflight.nasa.gov/outreach/SignificantIncidents/assets/hypersonics-before-the-shuttle.pdf