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 OFMM Discussions for the OFMM project.

 01-09-2012, 10:23 PM #106 Urwumpe Certain Super User Quote: Originally Posted by Loru  It's around 60 meter wide Too big? yes, 60 meters is a lot too much. 10-20 meters would be my estimate for a 250 kg TNT impact, but that depends a lot on the terminal velocity. Do you have a measurement from Orbiter already? (On Earth, this projectile would make a 7m diameter simple crater, 1.34 meter deep, Mars should be close despite the lower gravity, since rock density is more important) Last edited by Urwumpe; 01-09-2012 at 10:29 PM.
 01-09-2012, 10:26 PM #107 woo482 Moderator I think about 2.5 km/s is the average impact velocity
 01-09-2012, 11:05 PM #108 Loru Moderator Are you using similar equation to estimate TNT equivalent of kinetic impact: Code: `TNT Equivalent [kg] = m[kg] (0.5 * V^2) / 4.5e6` ??? I got 173 kg of TNT for 2.5 km/s and 250 kg of TNT at 3 km/s From 600 km high orbit impact is around 3 km/s
01-18-2012, 11:54 PM   #109
MaverickSawyer
Acolyte of the Probe

I don't know how well this could work, but could we use mars to help with parallax measurements to help refine the distances of stars? If it's enough of a change in distance, it could help us refine figures...

Side note: I have a sketchup model of a possible seismometer for us. It's simple, and solar powered. It would be a UCGO cargo, but I need the .skp turned into a .msh, and I can't do that and keep the textures. Any help would be welcome.
Attached Files
 seismometer.zip (257.2 KB, 3 views)

01-19-2012, 04:08 PM   #110
MaverickSawyer
Acolyte of the Probe

This is what I have for now:

Finalized version is attached.
Attached Files
 seismometer.zip (257.7 KB, 2 views)

Last edited by MaverickSawyer; 01-19-2012 at 04:33 PM.

 01-19-2012, 05:51 PM #111 Loru Moderator I know cubes are easy but come'on - it was done in like 40 minutes Last edited by Loru; 01-19-2012 at 05:53 PM.
 Thanked by:
 01-19-2012, 06:18 PM #112 MaverickSawyer Acolyte of the Probe Hey, I tried. I'm not good at making complex stuff outside of Solidworks.
 01-19-2012, 07:24 PM #113 Scruce Ad astra per aspera Decided to give a go myself: Around 2500 polys. Done in around half an hour.
 01-20-2012, 05:06 AM #114 Chub777 Orbinaut Tried as well: But seeing as we don't want to go down the "old OFMM path" (and I have yet to learn coding), I suggest someone else's seismometer.
 01-20-2012, 05:40 PM #115 MaverickSawyer Acolyte of the Probe Who says there needs to be output? We just need the meshes, so we can use UCGO to pack them along, then place them. Something for the EVA people to do while out on the surface.
 Thanked by:
 01-21-2012, 04:55 PM #116 Loru Moderator surface science kit: (from left to right: - mobile sat uplink dish, weather station, RTG, Scientist underway: seismometer & drill.
 Thanked by:
 01-23-2012, 05:15 PM #117 MaverickSawyer Acolyte of the Probe perfect!
 01-28-2012, 07:49 PM #118 Loru Moderator drilling some holes (on the right)
 Thanked by:
 01-28-2012, 07:58 PM #119 Urwumpe Certain Super User Hmm... a drill core sample container might be a wise addition.
 01-28-2012, 08:42 PM #120 Loru Moderator I think we can use UCGO crate for that

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