India Space Indian Space Archive

Nilgiri

Experienced member
Moderator
Aviation Specialist
Messages
9,175
Reactions
89 18,575
Nation of residence
Canada
Nation of origin
India
Last week, the Indian Space Research Organisation (ISRO) successfully tested the crew escape system for Gaganyaan, India’s ambitious manned space mission. What is the project and what will it mean for India’s space ambitions? Here’s an explainer.

 

Nilgiri

Experienced member
Moderator
Aviation Specialist
Messages
9,175
Reactions
89 18,575
Nation of residence
Canada
Nation of origin
India
Basically its almost impossible to design a battery to withstand near absolute zero for this period of time (half a month). Nothing is 100%, i.e there is likely some high confidence interval that the batteries and capacitors etc involved could not survive this (found out during cold freeze research and testing etc) but there is some finite small chance worth checking for anyway just in case.

There was no RTG etc like say found on voyager space probes (to provide a steady residual minimum temperature to critical payloads), likely the mass and other budgets would cascade by that and was deemed not worth it.

i.e the thermal management was never designed by its basis to survive the lunar night (and the mission was timed to make full use of the lunar day before it with this in mind tool).

Though it has now been revealed RTG tech demonstrators were employed aboard the CY-3 orbiter. So future lunar, martian and solar system explorer projects may involve landers and rovers with RTG onboard hopefully to have longer mission life @Rodeo @Gessler et al.

 

Nilgiri

Experienced member
Moderator
Aviation Specialist
Messages
9,175
Reactions
89 18,575
Nation of residence
Canada
Nation of origin
India

Marlii

Committed member
Messages
282
Reactions
3 299
Nation of residence
India
Nation of origin
India
Screenshot_2023-11-18-14-15-31-57_f9ee0578fe1cc94de7482bd41accb329.jpg
Screenshot_2023-11-18-14-15-03-37_f9ee0578fe1cc94de7482bd41accb329.jpg
 

Nilgiri

Experienced member
Moderator
Aviation Specialist
Messages
9,175
Reactions
89 18,575
Nation of residence
Canada
Nation of origin
India

Basically we have confirmation now that LUPEX is separate mission to CY-4 (which will be done later).

LUPEX will be a joint mission with JAXA it seems (which is pretty much the best country India can cooperate with space if you look at what JAXA has developed in unique ways which they are very humble about).

CY-4 will involve a lunar sample return and two separate launches (one for the lunar mission component, the other for it to dock to on return and for re-entry to Earth). Very interesting mission design.
 

Nilgiri

Experienced member
Moderator
Aviation Specialist
Messages
9,175
Reactions
89 18,575
Nation of residence
Canada
Nation of origin
India
The success of the Chandrayaan-3 mission raises even more questions about our already mysterious Moon.

 

Marlii

Committed member
Messages
282
Reactions
3 299
Nation of residence
India
Nation of origin
India

Nilgiri

Experienced member
Moderator
Aviation Specialist
Messages
9,175
Reactions
89 18,575
Nation of residence
Canada
Nation of origin
India

Yes it is in the 5th slide of that thread summary. I suppose it hinges on how the cooperation goes with US..an extra if you will as segue after the Indian space station (there is commonality in docking standards after all in international space, so might as well leverage off US economy of scale at that point where possible).

But I do not foresee it as being contingent to Indian program for a human moon landing.

 

Gessler

Contributor
Moderator
India Moderator
Messages
732
Reactions
31 1,601
Nation of residence
India
Nation of origin
India

Other important updates being: 1) US extending offer of cooperation in the Indian space station program (BAS) and 2) Proposal for a joint interplanetary mission (to Mars?) between ISRO-NASA.
 
Top Bottom