Bharat Rakshak

prasannasimha

SpaceX is using reusable conventional rockets to reduce costs of Spacelaunch. However I have a feeling that Gas guns like in project SHARP have the potential to quicklaunch satellites, supplies and fuel to space at much lower costs than SpaceX. ISRO should try some pilots. I have this idea that a t...

prasannasimha

The next launch will be GSLV F10 for GISAT1 Date is not yet finalized. May be in Jan or Feb

prasannasimha

This is untrue. My father had a non-malignant patch in his lungs and they had planned to operate him. He just took a chance to see a homeopathic doctor who was recommended by my uncle who practiced it briefly. Within a matter of 3-4 weeks, after taking regular medication, they could no longer see t...

prasannasimha

There is no rational explanation, but I have multiple instances for Homoeopathy working. 1. My brother-in-law had virtiligo (white patches on skin). Tried modern medicine for some time. No use. Homoeopathy completely cured it in a few months. 2. My mother started cataract in her eyes. Homoeopathic ...

prasannasimha

This tome the wafer onwards production saa ondigenpus. Previoudly sent to am outside fab unit

prasannasimha

I think we must build separately some engine as a science project that works and build a plane around it. This way we will get out of the long term cgicken and the egg situation. The science project continues to evolve the engine in stages

prasannasimha

Rout's source may have been told to keep silent . He has lost his info source it seems

prasannasimha

Just not making the orbiter will not cut it as to reach the moon the orbiter will be the system that will do the multiple orbiter elevation etc and then and only then can it detach and lander can land.

prasannasimha

https://www.isro.gov.in/update/31-oct-2 ... -exosphere

prasannasimha

https://www.isro.gov.in/update/31-oct-2 ... -exosphere

prasannasimha

According to a AV report on Youtube[/url], very soon there is a going to be a landing test in Chitradurga in Karnataka. The RLV will be dropped from a height of 3 km by a Helicopter, the onboard system will then help this vehicle to glide and land on runway. That's good, but it would have been nice...

prasannasimha

To add to it IAF have clearly told they can track the so called Chines Stealth aircraft

prasannasimha

Not to worry. Nag is being used. We want other ATGM's to build up our stock and well we are not operating at present in hot summer when spie etc failed and now Nag works

prasannasimha

Tejas did travel from Bangalore to Jaisalmer for for Iron fist without refueling

prasannasimha

One of the goals of SPADEX is also satellite refuelling and upgrading. Its not just about space stations.

prasannasimha

Oh so you are insinuating that ISRO has already located Vikram/Pragnya? There is already mention of thermal imaging .There are sources mentioning that imaging by the orbiter has been done. Further information will be got after failure analysis. They will not put out any more information till it is ...

prasannasimha

Thanks, makes me feel better. It makes sense, so they can also do comparative before and after analysis. I think ISRO has all the pics, analysis (finding needle in hay stack) is taking time and thus not officially released. The shadows etc. only came some days after the 'landing'. Trying to find 3 ...

prasannasimha

To put it into perspective the expected image even of the CY2 orbiter would be 3 pixels wide and that of LRO 1 pixel in size. The shadow analysis may give more information. As Amber G said it will require comparing of before and after images.

prasannasimha

UlanBatori wrote:This thread is now more repetitive than an orbit by the LRO. As long as nothing new is discussed v should b fine. Maybe post a few pics of the launch?

Then please desist from posting if noncontributory

prasannasimha

If this caste based bashing does not stop pronto bans will be issued. Be warned. This forum is Bharath Rakshakh were we talkand promote unity and not create anecdotal fables. This page will be monitored.

prasannasimha

What is 360 degree flip? If you see the image during the landing the animation showing the position of the lander actually did a Vishnu chakra type of somersault 360 deg rotation back to its vertical position and righted itself (I immediately commented as to why it was doing such a flip) but there ...

prasannasimha

Gyroscopes could have had a Gimbal lock FWIW The rotation loop completed the 360 Deg flip as seen from telemetry but during the flip it rapidly descended leading it to try to fire to decelerate for given altitude. Now we had only 2 engines on which does not have enough theust. So engine valiantly tr...

prasannasimha

^ It was done by US for the one if the Mars landers. I think spirit and opportunity but was given up subsequently

prasannasimha

The main mission whichis the orbiter is still going on and data as usual will be released in two tranches. First release is for ISRO and Indian researcherd. After 6 months data is released for any scientific use after registration with ISRO. Both MOM and ASTROSAT data are beingreleased in that forma...

prasannasimha

The arrestor cable is meant to be able to resist and is not a single fiber but a rope with multiple strands. Not easy to break. Suspension bridges are "suspended' using these.The breaking forces etc are well known.

prasannasimha

They will not release detailed images as this will give an idea of our 2 point discrimination capability. May be a later degraded image. The orbiter is working very well. Why would we want to hide any enhanced camera capability? This is being used on the moon to enhance the knowledge of humanity......

prasannasimha

Vikram’s quiet because it can’t talk! But Isro? What to write when there is no further info. They are trying to communicate and its not connecting. Everyone knows that. They will not release detailed images as this will give an idea of our 2 point discrimination capability. May be a later degraded ...

prasannasimha

I think somewhere now the Chandrayaan Orbiter would have made a pass over the putative crash site . Leet us hope we get some more useful data about it. I do not think we will get images from the orbiter wrt the lander so easily as it may give an idea about our two point discrimination capability or ...

prasannasimha

^Nothing that is released would be Inadvertent- it would have been done on purpose

prasannasimha

I am still trying to understand how the lander is intact. For this to happen, it had to slow down considerably from the time of the anomaly. That can only happen if the lander is right side up for most of the rest of the descent. I am more interested in the final moments now. One of the possibiliti...

prasannasimha

The small thrusters are 25 N ones From the paper that ramana gave link to: Chandrayaan-2 Lander will employ a clustered configuration of four 800N engines along with 50N attitude control thrusters placed at the bottom of spacecraft, to decelerate the spacecraft for braking and soft landing on lunar...

prasannasimha

^ 6 degrees of freedom. Pitch yaw and roll are the other 3. 3 DOF is only for a point object.

prasannasimha

prasannasimha

The plane sune wavd is the carrier wave. The modulated wave pic is tge data transmission occuring. No terrestrial telescope has the resolution to even image Apollo landing sites and can only be imaged by LRO and now Chandrayaan. This is dictated by optics. Our largest telescope does not have the two...

prasannasimha

UlanBatori wrote:@JayS : Yes, but what happened to all the 100m-hover and the pattern-matching? Pls read the aiaa paper sections I posted above, thanks.

It probably was at too high a velocity to be able to decelerate to hover

prasannasimha

The small thrusters are 25 N ones

prasannasimha

Everything occurred with the somersault that it did.That is the crux to the whole problem. Why it happened for starters is one issue. After it occurred the correction was automatically attempted and probably worked but the time needed to land after full correction to decelerate to final requirements...

prasannasimha

Paper says that CY-1 (not CY-2) was forced to raise orbit from 100km to 200km to reduce heating. Is this radiant heat from lunar day? Wow! I thought it only reached 200C which should cause radiant heating only like an average day in Sriharikota summer, hain? Doesn't the orbiter rotate to distribute...

prasannasimha

There will be a whole host of system checks before Pragyaan can start its roll out. Remember that Vikram is virtually taking a powered descent and will be virtually dropped from a height of 5 meters and crash to the moon to avoid having a rocket plume distorting the landing site. It will be having c...

prasannasimha

There will be no real time transmissions till the Lander actually lands and the rover panel/slide is opened. We will probably be getting telemetry data. DrSivan told about one cause of Beresheets failure - human interference caused issues and muddled up things so they will allow the Lander to do the...

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