Mangalyaan : ISRO's Mars Orbiter Mission

The Military Issues & History Forum is a venue to discuss issues relating to the military aspects of the Indian Armed Forces, whether the past, present or future. We request members to kindly stay within the mandate of this forum and keep their exchanges of views, on a civilised level, however vehemently any disagreement may be felt. All feedback regarding forum usage may be sent to the moderators using the Feedback Form or by clicking the Report Post Icon in any objectionable post for proper action. Please note that the views expressed by the Members and Moderators on these discussion boards are that of the individuals only and do not reflect the official policy or view of the Bharat-Rakshak.com Website. Copyright Violation is strictly prohibited and may result in revocation of your posting rights - please read the FAQ for full details. Users must also abide by the Forum Guidelines at all times.
SSSalvi
BRFite
Posts: 666
Joined: 23 Jan 2007 19:35
Location: Hyderabad
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SSSalvi » 15 Oct 2014 22:10

^^^
NO, It will be 50.3456 years .. You will see and then have to agree with me. :)

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 15 Oct 2014 22:52

vipulmb wrote:
Amber G. wrote:Thanks for Emily's Blog on Phobos ...

Phobos - Picture taken by MoM (From www dot the hindu)
http://www.thehindu.com/multimedia/dynamic/02154/PHOBOS_2154977f.jpg

(Just saying per the story above .. Phobos was nearing Mars at a rate of 1.8 m every hundred years and at that rate, it may crash into the red planet in 50 million years or so ...

That picture was taken by Viking-1 orbiter, not by MoM.

Thanks for the correction, and sorry for my sloppiness.
(Picture was from the following news story from Hindu..)
"Mangalyaan sends pictures of Mars moon Phobos"
(It was identified as from archives and the story did have the actual photo taken from MoM in later part of the story)

SSSalvi
BRFite
Posts: 666
Joined: 23 Jan 2007 19:35
Location: Hyderabad
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SSSalvi » 15 Oct 2014 23:33

In immediate future there are several opportunities to image Phobos and Deimos from 15000 to 17000 kms. Phobos' 7 hrs orbit and MOM's 72 hrs orbit provide at least 2 opportunities every 3 days.

There are also several opportunities to image from about 5000 kms .. but to image at those instants the craft has to be re-oriented drastically ( The cameras are facing Mars and Phobos and Deimos are in the MOM's backside when they are this near ) so whether it is worth taking risk of reorientation or not is a crucial decision. Let's see what MOM team does.

SaiK
BRF Oldie
Posts: 36405
Joined: 29 Oct 2003 12:31
Location: NowHere

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SaiK » 15 Oct 2014 23:40

the probability of earth-made objects crashing into mars is way too higher than phobos given 50 millions years! unless mom can land on phobos, lock itself down. BTW, that brings an interesting mission thought! why not next send a permanent phobos docking mission? don't need any fuel except long lasting battery designs. perhaps modularized so that it spits out the old battery pack, and a new battery pack can dock in!

SSSalvi
BRFite
Posts: 666
Joined: 23 Jan 2007 19:35
Location: Hyderabad
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SSSalvi » 16 Oct 2014 00:08

Nothing to do with MOM, but as there is a lot of interest in Phobos images from Phobos2 mission of USSR was trying to read about it.

Stumbled on following in Phobos program Wikipedia:

Phobos 1 operated nominally until an expected communications session on September 2, 1988 failed to occur. The failure of controllers to regain contact with the spacecraft was traced to an error in the software uploaded on August 29/August 30, which had deactivated the attitude thrusters. By losing its lock on the Sun, the spacecraft could no longer properly orient its solar arrays, thus depleting its batteries.

Software instructions to turn off the probe's attitude control, normally a fatal operation, were part of a routine used when testing the spacecraft on the ground. Normally this routine would be removed before launch. However, the software was coded in PROMs, and so removing the test code would have required removing and replacing the entire computer. Because of time pressure from the impending launch, engineers decided to leave the command sequence in, though it should never be used. However, a single-character error in constructing an upload sequence resulted in the command executing, with subsequent loss of the spacecraft


( Bold letter is my emphasis )

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 16 Oct 2014 02:35

SaiK wrote: BTW, that brings an interesting mission thought! why not next send a permanent phobos docking mission? don't need any fuel except long lasting battery designs. perhaps modularized so that it spits out the old battery pack, and a new battery pack can dock in!


I am sure you know it, but statement seems very odd. You sure need fuel (and perhaps much more fuel - and control to dock it to Phobos, than putting MoM on any generic orbit around Mars. Of course, once the probe is in stable orbit, it will require virtually no fuel - does NOT make any difference if it is docked to Phobos or not.

(Ride is free, once you achieve the orbit, and it really makes no difference if you are docked to Phobos or in a similar orbit )

SaiK
BRF Oldie
Posts: 36405
Joined: 29 Oct 2003 12:31
Location: NowHere

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SaiK » 16 Oct 2014 05:25

yeah! I should have thought about it docking requires extra fuel. moorkh me! if it can do that, it becomes another phobos!

rsingh
BRF Oldie
Posts: 3365
Joined: 19 Jan 2005 01:05
Location: Pindi
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby rsingh » 16 Oct 2014 14:12

SSSalvi wrote:^^^
NO, It will be 50.3456 years .. You will see and then have to agree with me. :)


Yup you made your point. Khus to bahut hoge tum ?

SSSalvi
BRFite
Posts: 666
Joined: 23 Jan 2007 19:35
Location: Hyderabad
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SSSalvi » 16 Oct 2014 21:57

Nice read. R Aravamudan interview on Rediff about the olden days of Indian Rocketry.

Hailing from Madras, I could not get adjusted to.. Bombay and wanted to get back to the south. This was when.. being posted in Thumba.

The Nike Apache Rocket had been flown to Trivandrum and the Vapour Cloud payload had reached. Being hazardous items, the transportation of these from the US was in itself a pioneering effort and many a tale could be written on this.


The orange vapour trail was visible from all over Kerala and parts of Tamil Nadu. This created great excitement. Since the public had never seen such a sight before, it also gave rise to some hilarious newspaper reports.

In fact, the Kerala legislative assembly, which was in session, then apparently adjourned temporarily to have a good view of the bright vapour trail in the western sky!

When one of my colleagues pressed the siren switch, a thundering noise was heard and the rocket zoomed up....We learnt that day, how important it was to isolate the ground leads of the firing circuits from the general ground.

To our dismay, we found that the ignitor did not work in a vacuum, while it was fine under normal pressure. The ignitor design was modified and then it started functioning well in actual flights.

We also worked out a regular system of compensation for fishermen who claimed that their nets had been damaged by rocket debris.

The range was quite large in area and the only means of transport within the range was by bicycle. Those like Kalam who could not cycle had to hitch rides with others.

.... Professor Satish Dhawan...was until then in Bangalore as a professor in the Indian Institute of Science and also its Director... was responsible for moving the ISRO headquarters to Bangalore.

... Mangalyan is one of the most visible achievements of ISRO. But the reliability of its rockets and satellites and the ability to conceive, implement and complete on time its major tasks in a transparent and confident manner is its major achievement.





Bold letter emphasis is added by me.

Victor
BRF Oldie
Posts: 2628
Joined: 24 Apr 2001 11:31

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Victor » 17 Oct 2014 09:24

SaiK wrote:yeah! I should have thought about it docking requires extra fuel. moorkh me! if it can do that, it becomes another phobos!

Not moorkh at all. The Russian-Chinese Phobos-Grunt was supposed to "dock" (land) on Phobos to collect samples, return them to Earth and study Mars' atmosphere and climate long term. This is now being thought of as a preliminary step to landing men on Mars. It is easier to land on Phobos and a manned station there could operate robots on Mars to assemble shelters and stores (oxygen, food, water, tech supplies, heavy equipment) with better control and precision than from Earth in preparation for a manned landing on Mars itself. Since it takes almost a year to get to Mars, a landing craft would need to be re-supplied for the return journey. Phobos could prove to be a very useful way-station to Mars by becoming a permanent "orbiter" for Mars landing craft.

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 17 Oct 2014 09:52

Victor wrote:
SaiK wrote:yeah! I should have thought about it docking requires extra fuel. moorkh me! if it can do that, it becomes another phobos!

Not moorkh at all. The Russian-Chinese Phobos-Grunt was supposed to "dock" (land) on Phobos to collect samples, return them to Earth and study Mars' atmosphere and climate long term. This is now being thought of as a preliminary step to landing men on Mars. It is easier to land on Phobos and a manned station there could operate robots on Mars to assemble shelters and stores (oxygen, food, water, tech supplies, heavy equipment) with better control and precision than from Earth in preparation for a manned landing on Mars itself. Since it takes almost a year to get to Mars, a landing craft would need to be re-supplied for the return journey. Phobos could prove to be a very useful way-station to Mars by becoming a permanent "orbiter" for Mars landing craft.


Thanks. To add:
Sure, if one wants to collect samples from Phobos (as one of the objective of Grunt was), one has to dock with Phobos, and yes, docking with Phobos is less tedious than "docking" with( iow landing on) Mars. (This is, because Phobos has much smaller gravitational field).

And Phobos may have many other uses, but simple point of above was to point out that it is NOT going to save fuel for any orbiter. In other words, if you want to have a permanent "orbiter" you may have many other reasons to select Phobos but docking with it will NOT save any fuel for any probe.

member_28714
BRFite
Posts: 317
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28714 » 17 Oct 2014 12:43


member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 17 Oct 2014 16:18

Image

member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 17 Oct 2014 16:19

^ Shows OLympus Mons the highest mountain in the Solar System

SSSalvi
BRFite
Posts: 666
Joined: 23 Jan 2007 19:35
Location: Hyderabad
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SSSalvi » 17 Oct 2014 20:53

Some features identified:


Image

Slides describing some features available here
Last edited by SSSalvi on 18 Oct 2014 00:13, edited 3 times in total.

member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 17 Oct 2014 21:08

SSSalvi what is the vertical valley perpendicular to Valles Marinaris ?

Victor
BRF Oldie
Posts: 2628
Joined: 24 Apr 2001 11:31

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Victor » 17 Oct 2014 21:44

The perfect symmetry of the Mons Cluster is scary in a good sort of way. :D

SSSalvi
BRFite
Posts: 666
Joined: 23 Jan 2007 19:35
Location: Hyderabad
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SSSalvi » 17 Oct 2014 21:45

^^^
^^^
Echus Chasma and Echus Chaos regions of depressions

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 17 Oct 2014 22:22

prasannasimha wrote:^ Shows OLympus Mons the highest mountain in the Solar System

Also shows Valles Marineris - the largest canyon in the solar system (10 km deep and over 4000 km long - makes Grand Canyon look very small)

(PS Olympus Mons is about 24 Km high - 3 times higher than Mount Everest )

harbans
BRF Oldie
Posts: 4883
Joined: 29 Sep 2007 05:01
Location: Dehradun

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby harbans » 18 Oct 2014 02:23

That is one of the most beautiful Mars pics i have ever seen! Simply breathtakingly awesome!!!

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 18 Oct 2014 03:06

^^^ Yes, a very stunning picture.
Some old pictures....

This picture taken by Rover, although not that stunning is one of my favorite ...This photo is called "Earth From Mars, was the first image of Earth seen from the surface of a planet beyond the moon., is one I liked

Image

Anyway some may like some other Mars images...
http://www.huffingtonpost.com/2010/01/21/mars-pictures-nasas-most_n_431137.html

harbans
BRF Oldie
Posts: 4883
Joined: 29 Sep 2007 05:01
Location: Dehradun

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby harbans » 18 Oct 2014 03:11

^^ And that is the most amazingly "insignificant" pic of the Earth i have ever seen! :)

Varoon Shekhar
BRFite
Posts: 1927
Joined: 03 Jan 2010 23:26

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Varoon Shekhar » 18 Oct 2014 05:36

prasannasimha, how many images from Mangalyaan has ISRO publicly released? I have seen only 4 on ISRO's website.

member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 18 Oct 2014 07:01

The last I counted it was 6. The remaining are posted on Twitter/Facebook.The ISRO website has got only the ones where they have released the high resolution images to the public.

SSSalvi
BRFite
Posts: 666
Joined: 23 Jan 2007 19:35
Location: Hyderabad
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby SSSalvi » 18 Oct 2014 07:17

^^^
I have seen at least 6-7 images.

Problem is ISRO website is the slowest to react for updates/freshness.

Mangalyaan facebook was good till MOI, but now the only updates are on Tweeter ( That too ISRO tweeter .. not Mangalyaan tweeter.)

NRao
BRF Oldie
Posts: 16518
Joined: 01 Jan 1970 05:30
Location: Illini Nation

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby NRao » 19 Oct 2014 23:10

Real-time watch-live-as-comet-siding-spring-flys-by-mars:

http://www.universetoday.com/115430/wat ... s-by-mars/




Less than 2 mins to go for least distance flyby.

#sloohcomet (questions for this expert)

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 20 Oct 2014 00:06

Image

Comet Siding Spring approaches within a degree of Mars at 5:07 a.m. CDT today October 19. Closest approach happens around 1:28 p.m. CDT (18:28 UT) when the comet will brush about 83,240 miles from the planet’s surface. Image copyright SEN / Damian Peach

akashganga
BRFite
Posts: 367
Joined: 17 Mar 2010 04:12

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby akashganga » 20 Oct 2014 06:12

No news from ISRO so far about health of mangalyaan after passing of comet siding spring. In the meantime NASA has confirmed health of its orbitors http://www.nasa.gov/jpl/all-three-nasa- ... ESAJfnF_T8

member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 20 Oct 2014 07:20

If you see the DSN Network Mom is transmitting at 999bits/second.

member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 20 Oct 2014 15:10

Phew! Experience of a lifetime. Watched the #MarsComet #SidingSpring whizzing past the planet. I'm in my orbit, safe and sound.

juvva
BRFite
Posts: 306
Joined: 20 Oct 2008 17:34

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby juvva » 20 Oct 2014 19:28

They were planning to release the captured images of the comet this afternoon.
...........waiting.........

member_28820
BRFite -Trainee
Posts: 7
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28820 » 20 Oct 2014 23:20

juvva wrote:They were planning to release the captured images of the comet this afternoon.
...........waiting.........

Oh seriously :D
I was under assumption that MCC is pointed only towards MARS.

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 21 Oct 2014 06:32

Image

HiRISE (The High-Resolution Imaging Science Experiment of NASA's MRO) Beams Back Images of Comet's Tiny Nucleus

One news item Link:http://news.discovery.com/space/astronomy/nasa-mars-orbiter-beams-back-images-of-comets-tiny-nucleus-141020.htm

Few tidbits:

It has also become the first ever mission to photograph a long-period comet’s pristine nucleus on its first foray into the inner solar system.

These first HiRISE observations, astronomers have determined that the icy nucleus at the comet’s core is much smaller than originally thought. (Half of 700 meters what they thought before)


The two observations showcased above are the best two from the HiRISE campaign. The top thumbnails represent images with the full dynamic range, including the nucleus and coma. Comets are composed of a central icy lump of material — the nucleus — and when the comet becomes heated by solar energy, ices sublime, blasting vapor and dust into space. During this process, the coma forms and the solar wind will sweep some of the vapor and dust into a tail.

The larger bottom images are overexposed photos where the coma has been brightened so astronomers can fully appreciate its extent. The nucleus in these images cannot be seen. The time between left and right images is approximately 9 minutes.

This is the first time that a “fresh” comet from the Oort Cloud has been observed up-close.

HiRISE’s observation comes hot on the tail of NASA rover Opportunity’s surface image of Siding Spring shown below.(The fuzzy object in the center of this raw and unprocessed image)

Image

Still waiting for spectrometer findings... (MoM detects CH4 type news)..


Per news - MOM team is eagerly awaiting the data about the comet (expected to be downloaded from Monday night on wards.) The MCC has taken a photo of the comet and the Methane Sensor For Mars also did it's thing.

RonyKJ
BRFite
Posts: 109
Joined: 30 Jan 2001 12:31
Contact:

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby RonyKJ » 21 Oct 2014 19:26

Siding Spring causes explosion in Mars atmosphere
This is pretty spectacular if you watch the video. The flash
covers the whole disc of Mars.

http://www.examiner.com/article/comet-siding-spring-causes-an-explosion-on-mars-video

member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 21 Oct 2014 21:33

That seems to be more of an electrical discharge in the atmosphere.Such outbursts are seen wrt the earth too and not in the deep atmosphere.Maybe that is what it is.

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 21 Oct 2014 22:34

Siding Spring causes explosion in Mars atmosphere
This is pretty spectacular if you watch the video. The flash
covers the whole disc of Mars.

http://www.examiner.com/article/comet-siding-spring-causes-an-explosion-on-mars-video

May be this is why isro did not send any images yet.. because as the video says all electronics were zapped... :P

In any case, if you find the above interesting, there is much more from the same place ..
Enjoy:

Alien hunter finds lion's den on Mars (Video)
UFO hunter finds alien hybrid skull on Mars (Video)
Humanoid statue discovered on Mars? (Video)
Gun found on Mars by NASA rover? (Video)
Are these 'The Eyes of God'? (Video)

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 21 Oct 2014 22:43

Here is a less dramatic picture taken from earth (Florida, USA) with multiple 3 minutes exposures ..It was about 17 hours before the closest approach..
Image

member_28108
BRFite
Posts: 1852
Joined: 11 Aug 2016 06:14

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby member_28108 » 21 Oct 2014 22:44

The Twitter site says they do ahve images that are being processed. Looks like they do transfer of data(non telemetric) through Byalalu and use JPL DSN now only for Telelmetry probably related to costs (runs to thousands of dollars per minute).

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 21 Oct 2014 22:52

This *may* be image of Comet Siding Spring .. It’s the only fuzzy object in the field photographed on Sol 3817 (October 19) by the Opportunity Rover. Credit: NASA/JPL-Caltech
Image
>>>
It looks like NASA’s hard-working Opportunity Rover nabbed our very first pictures of a comet seen from another world! A study of raw images taken by the rover turned up a very promising fuzzy object. Only three night sky pictures were posted today, but two clearly show a fuzzy spot near the center of the field. Stars show as points of light and there are what appear to be a smattering of cosmic ray hits, but in the photo above, the brightest object is slightly elongated (trailed during the exposure?) and cometary in appearance.

Link:http://mars.nasa.gov/mer/gallery/all/opportunity_p3817.html

Amber G.
BRF Oldie
Posts: 6985
Joined: 17 Dec 2002 12:31
Location: Ohio, USA

Re: Mangalyaan : ISRO's Mars Orbiter Mission

Postby Amber G. » 21 Oct 2014 22:55



Return to “Military Issues & History Forum”

Who is online

Users browsing this forum: No registered users and 32 guests