India's Moon Exploration Program

[skywatcher]

If the goal is just to send rockets to space or land on planets and other space objects then every one is re-inventing the wheel. But i guess the goal is to build safe, re-usable and cost efficient rockets. And that is not possible with the 50s and 60s technologies. Very little has changed until early 2000s but Columbia disaster reminded everyone that the above goals are far from met. Unfortunately to incorporate the newer advances made in Science and Technology, it requires re-testing, re-launching and in the process some rocket failures. So though NASA provided lot of blueprint to SpaceX, it still went through the painful cycle (of what you are calling re-invention of wheel and almost went bankrupt at one point). But some objectives like re-usability are achieved, but not to the extent even SpaceX can stop the R&D on this continuous cycle. So suffice to say there is lot of space for all new players including the private entities to come up with better designs...and that's what some private players in US, Japan ,Chinese and Indian private entities have exploring from a few years.

SpaceX is roughly equivalent to the rest of world combined in terms of orbital launch cadence at least so far.

As of 13 Aug 2023, SpaceX has done 56 orbital launches

	World	126	120	6	0
	Country	Launches	Successes	Failures	Partial failures
	China​	35	35	0	0
	Europe​	2	2	0	0
	India​	6	6	0	0
	Israel​	1	1	0	0
	Japan​	2	1	1	0
	North Korea​	1	0	1	0
	Russia​	11	11	0	0
	South Korea​	1	1	0	0
	United States​	67	63	4	0	​

 

[skywatcher]

SpaceX is roughly equivalent to the rest of world combined in terms of orbital launch cadence at least so far.View attachment 218064

As of 13 Aug 2023, SpaceX has done 56 orbital launches

	Country	Launches	Successes	Failures	Partial failures
	World	126	120	6	0
	China​	35	35	0	0
	Europe​	2	2	0	0
	India​	6	6	0	0
	Israel​	1	1	0	0
	Japan​	2	1	1	0
	North Korea​	1	0	1	0
	Russia​	11	11	0	0
	South Korea​	1	1	0	0
	United States​	67	63	4	0	​

Iran hasn't launch anything so far this year. Weird.

And Europe is sort of in dormant mode.

 

[skywatcher]

Why are we worried so much about russia moon landing before india, anyhow they are previous USSR and already reached moon.

Here our first priority must be to show soft land capability to the world. The budget we use are very less compare to world space agencies.

ISRO has its own path. Moon bahut bada hai , kahin na kahin jagah mil hi jayengi.

Informative comparison

 

[skywatcher]

Informative comparisonView attachment 218087
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Timeline

 

[DumbPilot]

Timeline
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Dhanush mentioned

 

[RedHood108]

Timeline
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Luna-25 is tiny af. What sort of scientific instruments is it carrying with that small payload.

 

[Indx TechStyle]

Luna-25 is tiny af. What sort of scientific instruments is it carrying with that small payload.
View attachment 218095

Still, Luna 25 has RTEGs and will serve for one year.

 

[Sanglamorre]

Informative comparisonView attachment 218087
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Arreyy Bhai sab kuch mein ye log ODI waali head to head kar dete hain

 

[TopWatcher]

Still, Luna 25 has RTEGs and will serve for one year.

No worry, our next lander will be RTEG. If they hv no much instrument, why would they sending it.

 

[Indx TechStyle]

No worry, our next lander will be RTEG. If they hv no much instrument, why would they sending it.

No, that depends upon timeline of development of Alpha Source generators. Next 1-2 moon rovers may or may not have it but Mars rover in 2030 will definitely have it.

 

[skywatcher]

Luna-25 is tiny af. What sort of scientific instruments is it carrying with that small payload.
View attachment 218095

Q: Why does the LVM-3 rocket with lift off mass over 600 t have only 10 t to LEO. It doesn't seem right.

 

[RedHood108]

Q: Why does the LVM-3 rocket with lift off mass over 600 t have only 10 t to LEO. It doesn't seem right.View attachment 218144

That's because the 1st stage of LVM-3 is of solid rocket boosters. Cheaper & extremely reliable.

Weight for me is secondary. As long as LVM-3 gives us one of the most competitive price for satellite launch available in the market, we are good with it.

@Vamsi @Indx TechStyle & other forum members can give a better answer

 

[SKC]

Q: Why does the LVM-3 rocket with lift off mass over 600 t have only 10 t to LEO. It doesn't seem right.View attachment 218144

Result of the Unique engineering of ISRO: Mixture of Liquid + Solid stages and boosters

 

[angryIndian]

Friends,can anyone answer this

LVM3 is more powerful rocket than Soyuz 2 and has a higher payload capacity yet the latter can place a satellite directly to trans lunar orbit while the former can't,why ?

 

[Vamsi]

Friends,can anyone answer this

LVM3 is more powerful rocket than Soyuz 2 and has a higher payload capacity yet the later can place a satellite directly to trans lunar orbit while the former can't,why ?

entire CY-3 stack weighed 3.9 tons, hence injected into earth bound orbit, semi-cryo version of LVM-3 can directly inject it into LTT

 

[Vamsi]

 

[AnantS]

🚀 Chandrayaan-3 Dashboard: ISRO's Precise Move Pushes Spacecraft Closer To 100 km Circular Orbit

swarajyamag.com

 

[TopWatcher]

 

[Vamsi]

Orbit circularisation phase completed
Lander & PM will be separated tomorrow

 

[Vamsi]

Still, Luna 25 has RTEGs and will serve for one year.

No worry, our next lander will be RTEG. If they hv no much instrument, why would they sending it.

There is a possibility of CY-3 surviving the harsh lunar night, there's a system to wakeup the lander & rover, but we don't know whether it will work or not