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India Loses Contact with Probe Just as It Prepares to Land on Moon

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Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#221

Post by sandworm101 »

jcims wrote: post #220
sandworm101 wrote: post #212

Earlier quoted context omitted.

The blur is because the vehicle was vibrating. It means the thrusters were on. Note how they smooth out shortly after deceleration stops. Some of the larger movements could be maneuvering. If it is orientating itself then the antenna would intermittently move back and forth relative to the receiver.

I was thinking vibration but wouldn't we see a change when the retro-thrusters hit halfway through? I'm assuming the first part with downward slope is the craft accelerating due to gravity? Given it's a polar landing I don't know how to translate this to the velocity vector of the lander.

I think the change at the haldway mark is the thrusters stopping. The lander would continue shaking for a few seconds afterwards.

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#222

Post by starpilot »

JohnStrangeII wrote: post #33
rayiner wrote: post #10

Earlier quoted context omitted.

No. We’re different groups of people with different interests, different values, different ideas principles cultures histories views of the world. It’s good for us to be competing to explore space (and in trying to develop technological advantages in general). For countries like India it’s critical to develop their own technologies on this front. Otherwise they’ll remain eternally dependent on America, etc., for acce…

Your post has "false dichotomy" written all over it. Of course, space exploration is an international endeavor and most space missions are highly international. Planning international space exploration missions doesn't force anyone to give up their nation, just as global trade does not imply that. Moreover, if mankind ever expands into space, it would be rather naive to think that earth's nations would play a role th…

> It would take maybe a hundred years or so for space colonies to declare their independence

Seems like a naive assumption. We don't see Virgin Islands and other US territories trying to sever their ties to the mainland. In fact we see the opposite with Puerto Rico.

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#224

Post by stjohnswarts »

Barrin92 wrote: post #32
nafey wrote: post #15

Earlier quoted context omitted.

Well let's revisit this statement in 500 years. Every decade has brought the world closer. Even the recent developments (brexit, trump) are reactions to increased pace of integration. You can find kfc, coca cola in socities as diverse as Mongolia and Madagascar. It will be extremely difficult to turn the clock back on this and this will only keep on intensifying in my opinion.

It's certainly odd to measure the closeness of human societies by the proximity of coca cola dispensers. Humanity is scientifically and materialistically closer and that will certainly continue, but the world is not closer in terms of modes of governance or ideas of how society ought to be organised. On the contrary, 30 years ago after the fall of the Soviet Union that sentiment peaked and Fukuyama's end of history s…

That's only because of Trump and that will fail when he fails to be re-elected in 2020. I don't know why people think this is a trend rather than a local minimum (the Trump minimum?) .

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#225

Post by anjalier »

Please do not downvote or flag me.

This is not supposed to be a flame post. I’m not one of those people saying “India shouldn’t explore the moon before they feed all their poor people.” Indeed, India should work on everything at the same time.

However, it is not healthy for communities like HN to remove every post where someone brings up the possibility that exploring the moon may not be in the interest of India’s poor population. It’s important to voice this point of view, because India’s poor do not have a voice on HN. If we want to be open to all opinions without bias, then we must consider that this disregarded viewpoint may conflict with our own.

Recognizing this is healthy for the HN community and others. It’s not always about labeling things as right and wrong. Sometimes acknowledging that there is space between right and wrong is valuable.

Thank you for reading this.

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#226

Post by kappi »

adt2bt wrote: post #205
kappi wrote: post #152

Latest update.. DSN did a carrier lock on lander https://twitter.com/dsn_status/status/1170391223040954368 DSS 54 carrier lock on Chandrayaan-2 Lander Frequency: 2.2846GHz Signal strength: -143dBm IDLE OFF 1 TURBO

Can you explain in layman’s terms what this might mean?

they established a lock and were sending data at 11kW to the lander.. maybe trying to do some kind of recovery...but no communication back from the lander

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#227

Post by thewhitetulip »

yumraj wrote: post #119
thewhitetulip wrote: post #5

I read that the maximum experiments are in the orbiter so this is a successful mission. The only thing for which it 'failed' was to let the ruling class do chest thumping by saying 'we are the fourth country to land a rover'. The ruling party had planned a great celebration today for it's 100 days in office, a date coinciding when the rover would land! They wanted to milk it for their nationalistic purposes while the…

I could be wrong, but I think Modi came across as a lot more compassionate leader after the failure. And, to be honest, what is wrong with chest thumping if you have a success. Regarding Nehru, one good deed doesn't get rid of his other sins and royal screw ups.

> And, to be honest, what is wrong with chest thumping if you have a success.

Chest thumping is fine for your success, not of someone else's in which one had a grand total of 0 contribution

Dang: parent comment is yet another flame war thing.

Doing exactly what I said in my origin comment! Blaming Nehru while PM tales credit for ISRO, an org started by Nehru

Also

https://hwnews.in/news/national-news/govt-cuts-back-incentiv...

You don't get to chest thump after you cut salaries of ISRO staff and yet want to use their work for nationalisic agenda

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#228

Post by [deleted] »

dang wrote: post #156
thewhitetulip wrote: post #5

I read that the maximum experiments are in the orbiter so this is a successful mission. The only thing for which it 'failed' was to let the ruling class do chest thumping by saying 'we are the fourth country to land a rover'. The ruling party had planned a great celebration today for it's 100 days in office, a date coinciding when the rover would land! They wanted to milk it for their nationalistic purposes while the…

Please don't turn HN discussions into a political flamewar. https://news.ycombinator.com/newsguidelines.html

[deleted]

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#229

Post by [deleted] »

nithinm wrote: post #90
missosoup wrote: post #45

Earlier quoted context omitted.

> I think you are unnecessarily making this political GP is just highlighting that India's ruling party made this unnecessarily political. I'm not sure why it's being downvoted when it's factually accurate and is interesting in the context of the discussion. This is exactly the same thing that was going on in the Soviet Union where space project schedules were dictated by key party dates and celebrations. Not sure if…

The assumption GP made is that government deliberately planned their 100 days in office and the moon landing date to coincide. But the actual date of mission was different and was posponded last minute(literally) because of a leakage. So if the ruling party (ruling for past 5 years) really wanted the dates to coincide they would have easily scheduled the initial date to coincide. So there is no 'factual' correctness…

[deleted]

Re: India Loses Contact with Probe Just as It Prepares to Land on Moon

#230

Post by thewhitetulip »

mav3rick wrote: post #201
sbmthakur wrote: post #112

Earlier quoted context omitted.

Distracting to whom? The scientists were pretty much focussed with their tasks.

You are telling me ISRO spent no resources catering to this visit. Even 0.1% of resources, mindshare and energy wasted on landing day is stupid IMO. Do all speeches, visits the next day. Modi was clearly there for a photo op.

To be fair, I remember PM Manmohan Singh also in ISRO live streams so that wasn't it.

My issue is that the 100 day celebration was timed around rover landing and unfortunately rover did not land.

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