Launch: GSLV F15 - NVS-02 (aka IRNSS-1K) 29 Januray 2025 06:23 IST

[Clawreed]

With this a total of four satellites of the navic constellation have resulted in some sort of failure .

 

[TopWatcher]

With this a total of four satellites of the navic constellation have resulted in some sort of failure .

I am also thinking why ISRO waited years not launching any navic sattelite. Navic doomed

To run navic type of services smoothly, we need planning and strategy to replace defective satellite immediatly. Than these type of services will run. You cant wait years to replace defective/dead satellite.

Does spaceX will wait years to replace its internet providing satellite, if get failed. Jugaad never works every time.

 

[Miss Firing]

With this a total of four satellites of the navic constellation have resulted in some sort of failure .

What a coincidence that all four had some issues or other.

Meanwhile -

 

[GodEmperorDoom]

Who manufactured satellites? Is it private company or ISRO inhouse? Because the former may follow Industrial Standards while the latter leans mostly towards jugaad.

Jugaad costed the Chandrayaan-2 failure. If they don't implement Industrial Standards and Practices then they will be bottlenecked just like every other Gormint Company.

 

[SKC]

Vehicle worked flawlessly based on its design. The problem is the vehicle is not designed to put satellites in such orbits directly. We desperately need bigger rockets. But our chalta attitude and pride in this jugaad nonsense is killing us. Jugaad can only take us so far and using satellites thrusters to maneuver into the final orbit it a jugaad in today's standards, especially for a satellite weighing only 2200kgs. Finally our chalta and jugaad attitude is catching up to the one last good thing we have had - ISRO. If our work and scientific culture doesn't change, even ISRO will be doomed soon (not even later, but very soon).

Jugaad Tech has it own shelf life. After certain time we have to move to next stage and come up with the Direct to GTO transfer Rockets.
How long we have to continue with "Our Mars mission costed less than movie Gravity". It's not a thing to be proud of rather it tells that constrained we are with money keeping in mind that Americans are now beating us in cost game.​

 

[SKC]

I am also thinking why ISRO waited years not launching any navic sattelite. Navic doomed

To run navic type of services smoothly, we need planning and strategy to replace defective satellite immediatly. Than these type of services will run. You cant wait years to replace defective/dead satellite.

Does spaceX will wait years to replace its internet providing satellite, if get failed. Jugaad never works every time.

I think US and Russians used to make such satellites in pair (second one as backup of first). In case one goes kaput or suffer any failure with any subsystem or sensor they would launch the second one as replacement.

We need to work in same way. Keep a replacement always ready in case of failures.​

 

[NerVik]

Our jugaad nonsense, coupled with baniya and chalta attitude is killing our future. Add to that the new reservations jhumla going on, and populist policies that are enabling lazy, non productive population, our future is only a shade better than porkis and kanglus.

 

[GodEmperorDoom]

Our jugaad nonsense, coupled with baniya and chalta attitude is killing our future. Add to that the new reservations jhumla going on, and populist policies that are enabling lazy, non productive population, our future is only a shade better than porkis and kanglus.

Its because ISRO at the end is a Gormint company. If they don't outsource the majority of work to L&T or Pixxel and such, it would be very hard to progress beyond merely launching satellites. Human missions need high standards and precisions something Gormint babus aren't exactly known for.

 

[TopWatcher]

Its because ISRO at the end is a Gormint company. If they don't outsource the majority of work to L&T or Pixxel and such, it would be very hard to progress beyond merely launching satellites. Human missions need high standards and precisions something Gormint babus aren't exactly known for.

That's wat I said before satellite launches should be outsourced to pvt body and isro need to focus on high end projects. That's wat NASA does

 

[Varoon4]

The LAM ( liquid apogee motor) failing on board the Nav 2 satellite, from a faulty oxidiser valve, is a first of its kind for any Indian satellite. ISRO must get this problem fixed, which they surely will.

 

[TopWatcher]

The LAM ( liquid apogee motor) failing on board the Nav 2 satellite, from a faulty oxidiser valve, is a first of its kind for any Indian satellite. Hope ISRO gets this problem fixed, which they surely will.

Seems it sourced from pvt firm, which shows quality issue.

 

[Miss Firing]

The LAM ( liquid apogee motor) failing on board the Nav 2 satellite, from a faulty oxidiser valve, is a first of its kind for any Indian satellite. ISRO must get this problem fixed, which they surely will.

How does this happen?

I am assuming that everything was okay in ground testing which might have included a static firing of the LAM and hence validation of sub assemblies.

Is it something that was not there at that time but developed during in flight conditions?

 

[Migflug]

A recurring problem with Navic satellites. We should have gone full ballistic on improving our payload carrying capacity by investing in SCEs, CEs, or making more efficient LVs. However, here we are wasting our capex in developing vanity projects.

 

[TopWatcher]

A recurring problem with Navic satellites. We should have gone full ballistic on improving our payload carrying capacity by investing in SCEs, CEs, or making more efficient LVs. However, here we are wasting our capex in developing vanity projects.

First we should invest into making powerful launchers that can take object to gto directly.

Everytime cheap process will not work. Evryone saying NASA doing things expensively but its life time more than 100% ROI.

 

[Migflug]

First we should invest into making powerful launchers that can take object to gto directly.

Everytime cheap process will not work. Evryone saying NASA doing things expensively but its life time more than 100% ROI.

Just pushing SEs would have resolved many of our problems. We only needed Ariane 5/6 level of launch capacity to meet our domestic needs, not even cutting edge like Falcon 9. Last decade we had all the building blocks to build Ariane's equivalent, but we chose to focus on human mission and the capacity building took a backseat.

 

[TopWatcher]

Just pushing SEs would have resolved many of our problems. We only needed Ariane 5/6 level of launch capacity to meet our domestic needs, not even cutting edge like Falcon 9. Last decade we had all the building blocks to build Ariane's equivalent, but we chose to focus on human mission and the capacity building took a backseat.

Last time when we send CH-3 it was only for 14 earth days. Spending so much money why we kept life time of 1 lunar day only. Why cant we make the lander or rover that will last for more days. Why we always choose minute duration ?

Saving money sometimes push more money.

 

[Migflug]

Last time when we send CH-3 it was only for 14 earth days. Spending so much money why we kept life time of 1 lunar day only. Why cant we make the lander or rover that will last for more days. Why we always choose minute duration ?

Saving money sometimes push more money.

Because most of the fuel was used in injecting the satellite into lunar orbit. If we had a powerful rocket, we could have directly injected the CH3 in a higher orbit and while performing a trans-lunar injection (TLI), we could have saved a lot of fuel, prolonging the CH3 life