A Question for the readership here:Do you think I should make a "DIRECT Reference" thread here, specifically for storing the latest Baseball Cards, Mission Profile charts and other such material in one location that can be updated as and when required?I would have the thread locked permanently, except for updates, so it wouldn't be an actual discussion thread, but it might be a useful "one-stop-shop" for all the latest information.Thoughts?Ross.
Another good solution is, of course, just to keep the website updated properly!
Do you think I should make a "DIRECT Reference" thread here, specifically for storing the latest Baseball Cards, Mission Profile charts and other such material in one location that can be updated as and when required?I would have the thread locked permanently, except for updates, so it wouldn't be an actual discussion thread, but it might be a useful "one-stop-shop" for all the latest information.Thoughts?
I bet a lot of people would celebrate the removal of HCl from the exhaust and all the associated concerns (maintance of structures, water pollution etc.).
Another good solution is, of course, just to keep the website updated properly! Ross.
Not to get us off track, but if they get tough on perchlorate and stop using solids, I suspect Kero/Lox will end up being not used, not because of the science, but because of feel good political factors. Carbon emmisions, oh the horrors...
Not to get off track, but there's no other thread where this question would actually fit and it does fit this "current" discussion about replacing the SRBs on the Jupiter.What's the power density of Methane vs. LNG vs. Kerosene?
Quote from: kevin-rf on 05/22/2009 01:27 pmNot to get us off track, but if they get tough on perchlorate and stop using solids, I suspect Kero/Lox will end up being not used, not because of the science, but because of feel good political factors. Carbon emmisions, oh the horrors...Just to keep things in perspective creating and keeping cold LH2 for a LH2/LOX stage causes much higher CO2 emissions than the drop in the ocean from a RP-1/LOX launch. And both pale compared to the CO2 emitted by NASA during routine operations (e.g. the employees' cars).
Just to keep things in perspective creating and keeping cold LH2 for a LH2/LOX stage causes much higher CO2 emissions than the drop in the ocean from a RP-1/LOX launch.
One of the best 'alternative' mission profiles which we have been able to confirm so far is that of using the EDS to perform the LOI as well as the TLI.Because the lander doesn't have to perform the LOI, it results in a lander which is considerably smaller and lighter than the current CxP design. This solves almost all of the Altair's height/stability issues and might even allow the thing to fit inside an 8.4m PLF again too. At this size and mass the LSAM & CEV will *easily* fit on a J-130, thus improving both costs and safety for each mission. Also by having multiple engines on an RL-10-powered EDS you get high Isp and a great deal of engine-out capability for the LOI as well, which is nice.With this profile we're seeing about 10% extra payload mass to the Lunar surface as well -- and that's the real point.Ross.