Indian Lunar Space Probes and Exploration

Karthi

Senior Member
Joined
Jul 15, 2018
Messages
1,472
Likes
7,727
Country flag
Lunar Seismic Activity Studying instrument

Photograph of instrument for lunar seismic activity (ILSA) package.jpg


Photograph of ILSA


Schematic representation of silicon microstructure acting as the sensing element..jpg



Schematic rep of silicon microstructure as sensing element.

Overall architecture of the ILSA.jpg


architecture of ILSA


Photograph of 1″ × 4″ hybrid micro circuit with sensors and  front end electronics for ILSA.jpg

1″ × 4″ hybrid micro circuit with sensors and front end electronics for ILSA.


Photographs of coarse and fine range MEMS sensor elements (a) with SEM image showing the elect...jpg


coarse and fine range MEMS sensor elements for ILSA
 

Karthi

Senior Member
Joined
Jul 15, 2018
Messages
1,472
Likes
7,727
Country flag
Terrain mapping camera onboard Chandrayaan 2.

TMC-2 flight model.jpg



TMC-2 logic and control electronics card..jpg


TMC-2 logic and control electronics card.


TMC-2 power supply electronics card.jpg

TMC-2 power supply electronics card.




Optical schematic of terrain mapping camera-2.jpg


Optical schematic of terrain mapping camera-2.
 

Karthi

Senior Member
Joined
Jul 15, 2018
Messages
1,472
Likes
7,727
Country flag
Alpha Particle X-Ray Spectrometer
Schematic representation of 4 metallic calibration targets used on-board APXS.jpg

Schematic representation of 4 metallic calibration targets used on-board APXS.

Experimental setup for characterization of APXS.jpg



Experimental setup for characterization of APXS.

Encapsulated 244Cm alpha source.jpg



Encapsulated 244Cm alpha source.


Flight model package of APXS - Side view .jpg


Flight model of APXS Side view

Flight model package of APXS -front view (right).jpg



Flight model of APXS -front view

APXS mechanical model..jpg



APXS mechanical model.

APXS in stowed condition.jpg


APXS in stowed condition onboard Pragyaan.

APXS deployed condition (bottom)..jpg


APXS in deployed condition
 

Haldilal

लड़ते लड़ते जीना है, लड़ते लड़ते मरना है
Senior Member
Joined
Aug 10, 2020
Messages
2,864
Likes
8,636
Country flag
Ya'll Nibbiars Photographs of the lunar surface region between Manzinus C & Simpelius N taken on Mar 2. So far 22 orbit images with ~1056 sq. km area has been acquired by CY-2's OHRC. It is used to characterise landing sites for future missions & to interpret geologic features & history of a region.
EhWyI5hWAAAAZbm.jpeg
 

Haldilal

लड़ते लड़ते जीना है, लड़ते लड़ते मरना है
Senior Member
Joined
Aug 10, 2020
Messages
2,864
Likes
8,636
Country flag
Ya'll Nibbiars ISRO will strengthen the legs, change the software & algorithms, ensure better power & comms, add Laser Doppler Velocimeter (LDV) & remove the central engine from the lander for the CY-3 mission. Pics from CY-2, the 4 visible engines will remain on CY-3.
 

indiatester

Senior Member
Joined
Jul 4, 2013
Messages
3,539
Likes
8,240
Country flag
Ya'll Nibbiars ISRO will strengthen the legs, change the software & algorithms, ensure better power & comms, add Laser Doppler Velocimeter (LDV) & remove the central engine from the lander for the CY-3 mission. Pics from CY-2, the 4 visible engines will remain on CY-3.
Do they test scaled models on earth to figure out any bugs with the software?
 

indiatester

Senior Member
Joined
Jul 4, 2013
Messages
3,539
Likes
8,240
Country flag
They reduced one engine. 4 instead of 5, what caused entire imbalance last time.
The software should have balanced it with controlling the thrust between the different engines don't you think?
On ground testing, they should be able to test multiple failure and recovery scenarios. Just wondering if they do that.
 
Joined
Apr 29, 2015
Messages
13,603
Likes
27,327
Country flag
The software should have balanced it with controlling the thrust between the different engines don't you think?
On ground testing, they should be able to test multiple failure and recovery scenarios. Just wondering if they do that.
They should but point remains is that why put too many engines and make calibration difficult. I heard that he they didn't even do sufficient drop tests last either. Will do things cautiously this time.
 

Haldilal

लड़ते लड़ते जीना है, लड़ते लड़ते मरना है
Senior Member
Joined
Aug 10, 2020
Messages
2,864
Likes
8,636
Country flag
Ya'll Nibbiars ISRO did a Lunar night mission survivability test on their Li-ion batteries to establish the battery's ability to support peak power load during lunar day & survive passively at night at -160⁰C for 14 days 336 hrs.
 

indiatester

Senior Member
Joined
Jul 4, 2013
Messages
3,539
Likes
8,240
Country flag
They should but point remains is that why put too many engines and make calibration difficult. I heard that he they didn't even do sufficient drop tests last either. Will do things cautiously this time.
It's just sad if they did not test enough the last time.
Drop tests on full size machine is one thing... to iron out other stability issues, they can even use scaled models
 

Eva Braun

New Member
Joined
Sep 9, 2020
Messages
8
Likes
3
Country flag
Since the Internet and technology revolution, I always heard about NASA, that they achieved so much in space exploration, that they flew to space, and it is true - they made a lot, but I have never head about another company that helps in space exploration. Now there are other commercial industries that are together. For example, there is rocket XL that is intended for placing payloads into Sun-Synchronous Orbit.
 

Latest Replies

Global Defence

New threads

Articles

Top