X15/Saturn S-I_v_bw_o_n (unnumbered, ca. 1961? official Thiokol Chem. Corp photo)
"FUTURE ASSIGNMENTS FOR X-15:
Potential use of the X-15, powered by Thiokol's new 50,000 lb. thrust liquid rocket engine (XLR-99) as visualized by Thiokol Chemical Corporation, is for orbital space missions, as shown in this artist's conception. The space vehicle would be launched by a big booster."
Excellent reading, and a very similar diagram:
falsesteps.wordpress.com/2012/09/15/x-15b-shortcut-to-space/
Credit: "FALSE STEPS: The Space Race as it might have been" website/blog
X15/Saturn S-I_v_bw_o_n (unnumbered, ca. 1961? official Thiokol Chem. Corp photo)
"FUTURE ASSIGNMENTS FOR X-15:
Potential use of the X-15, powered by Thiokol's new 50,000 lb. thrust liquid rocket engine (XLR-99) as visualized by Thiokol Chemical Corporation, is for orbital space missions, as shown in this artist's conception. The space vehicle would be launched by a big booster."
Excellent reading, and a very similar diagram:
falsesteps.wordpress.com/2012/09/15/x-15b-shortcut-to-space/
Credit: "FALSE STEPS: The Space Race as it might have been" website/blog