Yeah, sorry. Frustration got vented. The LV analysis part was so disappointing. Kissing Dragons, maybe, but that just pretty much doubled the cost.
Quote from: apace on 02/27/2013 02:03 pmQuote from: R7 on 02/27/2013 02:01 pm..by publishing a paper behind paywall?Please! Public announcement is today and the paper will be published at the IEEE conference. No need to write such words from your side.Yeah, sorry. Frustration got vented. The LV analysis part was so disappointing. Kissing Dragons, maybe, but that just pretty much doubled the cost.
Quote from: R7 on 02/27/2013 02:01 pm..by publishing a paper behind paywall?Please! Public announcement is today and the paper will be published at the IEEE conference. No need to write such words from your side.
..by publishing a paper behind paywall?
Not just the most advanced life support systems ever but the most advanced heat shield ever.
Quote from: JohnFornaro on 02/27/2013 01:35 pmFor me, an outstanding question is the total mission delta-v, in the same terms as on the Larson & Pranke pages I posted above.http://forum.nasaspaceflight.com/index.php?topic=31160.msg1017827#msg1017827with only minor course correction budget (It is free-return after all).
For me, an outstanding question is the total mission delta-v, in the same terms as on the Larson & Pranke pages I posted above.
So the round trip is: 6.232 + 5.147 = 11.649 km/s?
Quote from: spectre9 on 02/27/2013 02:42 pmNot just the most advanced life support systems ever but the most advanced heat shield ever.You read the paper? Mission can be done with state of the art life support system. Advanced will be good but not needed.
Quote from: R7 on 02/27/2013 02:11 pmYeah, sorry. Frustration got vented. The LV analysis part was so disappointing. Kissing Dragons, maybe, but that just pretty much doubled the cost.A word of caution: the now-disappeared document has a creation date of January 6, 2013. So even if, as seems plausible if not certain, it's the paper that is going to be presented at the IEEE conference, what I was sent may be an early draft and the final version will differ to some degree.
Looks like the people who speculated about a BEAM on the nose were right!
Quote from: Ben the Space Brit on 02/27/2013 03:43 pmLooks like the people who speculated about a BEAM on the nose were right!Or just ad hoc illustration for the article. Even Orion doesn't have the circular solar panels anymore?
@ apace,Looks like the people who speculated about a BEAM on the nose were right!
Quote from: JohnFornaro on 02/27/2013 03:11 pmSo the round trip is: 6.232 + 5.147 = 11.649 km/s?No, you can't do math like that with Vinf numbers, that's the hyperbolic excess velocity. See http://en.wikipedia.org/wiki/Hyperbolic_trajectoryIn case of Mars flyby, the outbound leg Vinf will be the same for the inbound part since there is no propulsive burn done at Mars, but the vector direction will be different, hence a different heliocentric velocity and a resultant trajectory change after the flyby.
The mission in the paper is all based on life support systems.Written by a bunch of ECLSS experts trying to squeeze everything into an unrealistic TMI throw mass.Not just the most advanced life support systems ever but the most advanced heat shield ever.The Dragon capsule might be big enough. I haven't really thought about it.Pressure suits and an airlock would be good.More testing needs to be done on the confinement. Put 2 people in a smallish sized sealed box with 500 days of provisions and one small toilet and see how it goes. That's something they'd want you to say though given some of the writers are Biosphere 2 engineers. I guess they sort of have a point that in some ways it is easier than Apollo. Saturn V could've done this mission easily and this paper plays into the less launches of bigger rockets (larger payloads) mentality which many seem to be stuck in.Tito is credited first in the paper. Seems the connection is there.
Ok guys, let's try and to increase the quality of this thread.