Rumour has it that there might be more coming about on atmospheric methane and SAM in the near future.
Ready for Jan 2016?
Quote from: antriksh on 09/28/2014 04:49 amReady for Jan 2016? It has been mentioned before that GSLV Mk II won't be able to put the spacecraft on a direct-to-Mars trajectory and slingshot manoeuvres, although less as compared to PSLV, would still be required. The stats that you posted, do they correspond to dry mass or the mass at launch?
Quote from: robertross on 09/27/2014 01:36 pmQuote from: JohnFornaro on 09/27/2014 01:24 pmOn NPR this morning, they suggested that an Indian engineer makes about $1K per month, compared to the US engineer at $10K per month. The fact of the matter is that when an Indian engineers sez "F=ma", it has the same value as when an American engineer sez "F=ma".A few flaws in your responses, but this one stands out the most (even though there are some qualitative reasonings later).We can all say F=ma, they even teach us the meaning in schools.It's how one applies it, the experience to work it effectively, cheaply, and safely, and to bring about the desired (or expected) outcome that really matters.Robert: India got to Mars, "effectively, cheaply, and safely". On the first try. Unqualified praise is due.
Quote from: JohnFornaro on 09/27/2014 01:24 pmOn NPR this morning, they suggested that an Indian engineer makes about $1K per month, compared to the US engineer at $10K per month. The fact of the matter is that when an Indian engineers sez "F=ma", it has the same value as when an American engineer sez "F=ma".A few flaws in your responses, but this one stands out the most (even though there are some qualitative reasonings later).We can all say F=ma, they even teach us the meaning in schools.It's how one applies it, the experience to work it effectively, cheaply, and safely, and to bring about the desired (or expected) outcome that really matters.
On NPR this morning, they suggested that an Indian engineer makes about $1K per month, compared to the US engineer at $10K per month. The fact of the matter is that when an Indian engineers sez "F=ma", it has the same value as when an American engineer sez "F=ma".
The Kinja article is disparaging the "cheaply" part with no cause. Where is my error? Their engineers are paid a tenth of what ours are. I don't believe there are any logical flaws in my responses and I'm aware that I'm not popular amongst our titans of industry.
The Indians are exactly as human as are Americans. Their political situation is subject to evolving the same flaws that we have evolved here. What happens in the future is not subject to speculation.
extended autonomous operation / hibernation during communicaton blackouts,/ whiteouts due to earth - sun -mars geometry.
Spacecraft don't have to obey your prejudiced north-up preconceptions of correct maps!
Why is any of this a hazard to the spacecraft? With that light-time delay, pretty much everything done by the spacecraft is autonomous operation.
Cometary dust impacts might hasten the MMOD aging, but Earth satellites too... undergo that.
Quote from: antriksh on 09/28/2014 04:49 amReady for Jan 2016? Thanks antriksh! A couple of questions came to my mind (Maybe it makes more sense to ask this in the separate thread for the follow-on mission, but I'm just posting it below)..1. I remember reading that one disadvantage of using GSLV-II for a Mars mission was that it cannot make the coasting that PSLV did during MOM launch to adjust its Argument of Perigee (AOP), probably because PSLV has a separate 3rd and 4th stages while GSLV-II has a single non-restartable 3rd stage. I guess the mentioned payload capability take this into account? (EDIT: Would bundling an additional hypergolic upper stage with the spacecraft be of some use here, something in the lines of PAM-G? Spacecraft+Upper Stage does the coasting, then US fire multiple times for any necessary orbital adjustments and then do TMI and separate.. Not sure how much of sense it makes considering we are talking of bundling a less efficient hypergol on top of a more efficient cryo, just a thought that came to my mind..)2. Is the mentioned circular orbit equatorial? For a polar or high inclination orbit like MAVEN, the payload will be lower?EDIT: As per news reports, former ISRO chairman U.R.Rao had mentioned recently that ISRO might target the 2018 launch window for the next Mars mission as 2016 is too close to plan a good science oriented mission. So we may have to wait for the 2018 then.Meanwhile, there are reports that the Chinese might attempt their mission on 2016. As per reports in Xinhua, they want to make it better than MOM as they got left behind this time..
Quote from: JohnFornaro on 09/27/2014 02:03 pmRobert: India got to Mars, "effectively, cheaply, and safely". On the first try. Unqualified praise is due.100% agree
Robert: India got to Mars, "effectively, cheaply, and safely". On the first try. Unqualified praise is due.
The Kinja article is disparaging the "cheaply" part with no cause. Where is my error?...
I am saying that your explanation by using F=ma as an argument is flawed (but not 100% wrong). But no matter, let's focus on the mission, shall we?
India's ... political situation is subject to evolving the same flaws that we have evolved here. What happens in the future is not subject to speculation.
I agree with all but the last sentence, but that's personal opinion (as is all of our discussion, I suppose).Keep going India!
Regional dust storm activities over northern hemisphere of Mars - captured by Mars Color Camera on-board ISRO's Mars Orbiter Mission.The image was taken from an altitude of 74500 km from the surface of Mars.
QuoteRegional dust storm activities over northern hemisphere of Mars - captured by Mars Color Camera on-board ISRO's Mars Orbiter Mission.The image was taken from an altitude of 74500 km from the surface of Mars.
I see outline of the 'Indian subcontinent' in the latest pic...
Hi-res version