tag:blogger.com,1999:blog-6633940777526327846.post850672839318670250..comments2024-03-21T08:00:48.696-07:00Comments on No Shortage of Dreams: NASA's Planetary Joint Action Group Piloted Mars Flyby Study (1966)Unknownnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-6633940777526327846.post-83478062740259111192021-12-01T12:06:17.182-07:002021-12-01T12:06:17.182-07:00Hi, Kerrin — The habitable volume of the Planetary...Hi, Kerrin — The habitable volume of the Planetary JAG's piloted flyby spacecraft was even smaller than the AAP Workshop based on the S-IVB stage! Crew members would have had 450 cubic feet of free space each in the two-deck Mission Module. I didn't get into it in the post, but the Planetary JAG claimed that space life sciences people in 1966 believed that any effects weightlessness mightDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-83175024117349087692021-12-01T06:42:05.102-07:002021-12-01T06:42:05.102-07:00Hello David. Thank you for another fascinating pos...Hello David. Thank you for another fascinating post. I almost regret that the manned flyby mission didn't happen, but the thought of the crew spending nearly two years in a Saturn V upper stage is a bit daunting especially now that we have a better idea of the effects of long term weightlessness. The rise of the robotic probes was a game changer.<br />KerrinKerrinhttps://www.blogger.com/profile/14273502001487746745noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-15085557021118287842021-11-30T06:10:56.723-07:002021-11-30T06:10:56.723-07:00In response to your comment I added some informati...In response to your comment I added some information on assembly of the OLV in Earth orbit and MS-IVB and flyby spacecraft weights. Enjoy!David S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-12395436519743822942021-11-29T21:18:14.655-07:002021-11-29T21:18:14.655-07:00Glad you like it! The only thing I can figure is t...Glad you like it! The only thing I can figure is the MSSR payload was pretty small — the third stage that reached the piloted flyby spacecraft weighed only 42 pounds. Interestingly, the first stage was sufficient to put the MSSR ascent vehicle into a Mars escape path (or so the Planetary JAG claimed). As for the CSM pushing big MS-IVB stages around, I still find that hard to accept. As I state inDavid S. F. Portreehttps://www.blogger.com/profile/15818906581595028816noreply@blogger.comtag:blogger.com,1999:blog-6633940777526327846.post-29955307827624585362021-11-29T16:39:51.692-07:002021-11-29T16:39:51.692-07:00Thank you for the article ! It was a nice read. I ...Thank you for the article ! It was a nice read. I would loved to see it going further developed, like I would know how they would have gotten 9km/s from the MSSR ascent stage without him being a chunky spacecraft, how a CSM would have been able to tug the flyby spacecraft and one ms-ivb ...Kilaketianoreply@blogger.com