I was hoping to put up another article or two tonight, but I really need to get to packing. I’m flying up to Oregon tomorrow to join Tiff and Jonny, and to attend a wedding for Tiff’s brother James. I won’t be back until Tuesday, and probably won’t have any internet access during that time. And even if I did, I haven’t seen my family in almost a month, so I probably wouldn’t blog anyway.
Unfortunately, I’ve got several half-baked blog posts that are going to have to wait until I get back to be written, probably including my response to Mark Whittington’s comments. I wish I had the time to elaborate on things while they were still fresh on my mind.
But alas…
The following two tabs change content below.
Jonathan Goff
Director of Advanced Concepts at Gravitics, Inc.
Jonathan Goff is a space technologist, inventor, and serial space entrepreneur who created the Selenian Boondocks blog. Jon was a co-founder of Masten Space Systems, and the founder and CEO of Altius Space Machines, a space robotics startup that he sold to Voyager Space in 2019. Jonathan is currently the Director of Advanced Concepts for the space station startup Gravitics. His family includes his wife, Tiffany, and five boys: Jarom (deceased), Jonathan, James, Peter, and Andrew.
Jon has a BS in Manufacturing Engineering (1999) and an MS in Mechanical Engineering (2007) from Brigham Young University, and served an LDS proselytizing mission in Olongapo, Philippines from 2000-2002.
Latest posts by Jonathan Goff (see all)
- RLV Markets VII: Four Models for Commercializing Reusable Launch - July 25, 2026
- Happenings Elsewhere In the Goffosphere - June 6, 2026
- Starliner Reponendum Est? (Part II): Why Boeing’s Troubled Capsule Still Needs to be Replaced - March 4, 2026
Here’s some data, in csv format, you were asking for recently. It was developed in Aug. ’04 supporting LV evals.
Booster, MAX GLOAD G, MET sec, MAX TSURF Deg F, MET sec, Max Q psf
Delta IV Med. HR, 17.4, 420, 3140, 560, 551
CSCO-N2, 13.6, 400, 3040, 480, 578
SDV ILC-ET, 14.4, 270, 3250, 280-480, 750
CSCO-N1, 13.5, 400, 3030, 480, 577
ILC-RSRB4, 14.3, 400, 3030, 500, 1100
Delta IV HHR NUS, 15.9, 400, 3140, 600, 356
Atlas V HHR NUS, 14.3, 390, 3130, 600, 438
Spiral-1, 13.3, 400, 3040, 460, 729
SDV SMC, 14.5, 415, 3100, 475, 713
sorry, I failed to note that the g-loads and heating data are for worst case ballistic aborts. The max Q is for ascent.