David S. F. Portreeさんのイラストまとめ

No Shortage of Dreams — "Dyna-Soar's Martian Cousin (1960)"
https://t.co/GdxVl9tqel
A Philip Bono classic shown to be unworkable by Mariner IV in 1965 — though I'm pretty sure it was impractical even in 1960. Still, gotta love it!
#Mars #spacehistory

@JohnMPowell1 I suspect you know about this one!
https://t.co/ZHI42KT18o

No Shortage of Dreams — "'Assuming That Everything Goes Perfectly Well in the Apollo Program. . .' (1967)"
https://t.co/saCMh6gKAZ
This post, on NASA's post-Apollo plans, is unusual — its main source is a press conference, not a technical advance planning study. #twitterstorians

No Shortage of Dreams — "Dyna-Soar's Martian Cousin (1960)"
https://t.co/GdxVl9tqel
Another wonderfully weird concept from Philip Bono. #twitterstorians #spacehistory #Mars

No Shortage of Dreams — "Star-Raker (1978)"
https://t.co/VRXek0usW7
It's a Space Shuttle made of balloons! (Some filled with hydrogen.) #spacehistory #spacesolarpower #spaceshuttle

No Shortage of Dreams — Just a quick reminder that my NASA-published book HUMANS TO MARS: FIFTY YEARS OF MISSION PLANNING, 1950-2000 can be downloaded for free! It's still worth a read even if it is older than my kid (who is in college).
https://t.co/GSKVn4wbMd

No Shortage of Dreams — "Gumdrops on Mars (1966)" — https://t.co/MzBcE6AcNd
How the results from the Mariner IV Mars flyby mission triggered a Mars lander design revolution. #spacehistory #Mars

No Shortage of Dreams — "Reviving & Reusing Skylab in the Shuttle Era: NASA Marshall's November 1977 Pitch to NASA Headquarters"
https://t.co/WMiPMfIeBZ
Pretty much what it says on the can.

Still writing the FLO post. I made a big change in how I'm going to present it. I'm going for a "you are there" feel in this post, then in the second post I'll cover FLO context and policy. So, one post for the tech-heads and one for the history/policy wonks. Way more manageable!

In case anyone is wondering, I've started writing the First Lunar Outpost (FLO) blog post. Target date for posting is either 5 December, the anniversary of the date in 1999 planned for launch in 1992 documents or 9 December, planned first crew landing date. Will be a big post!