India successfully launches weather satellite, three others

[AnGrz_Z_K_Jailer]

Congrats to my Indian friends and good job DRDO. But one thing I would like to say here. Last week I saw China's satellite launch they fixed cameras on rocket itself to examine closely the separation of all three stages. Why don't we follow the same method? I very much like that idea. It will helpful to understand the flaw in any case and at the same time good opportunity for students to learn examine closely such critical launch.

regards
Jailer

 

[Mumbai Man]

Cheers

 

[GURU DUTT]

i think we should now put more effort in our avatar(reusable space plane) program

 

[Dalai Lama]

 

[AnGrz_Z_K_Jailer]

Thank you very much butter ji for sharing such a nice images. Thanks once again.

regards
Jailer

 

[Night_Raven]

Congrats ISRO once again !!

 

[AnGrz_Z_K_Jailer]

Mates! I have question for you all .. I have noticed but failed to understand why all satellite covered with that Golden color aluminum foil? Thanks in advance.

regards
Jailer

 

[ashokdeiva]

Mates! I have question for you all .. I have noticed but failed to understand why all satellite covered with that Golden color aluminum foil? Thanks in advance.

regards
Jailer

They are just protective layers to protect the Satilite from solar flares and solar dust.

 

[AnGrz_Z_K_Jailer]

Thank you very much mate ...so its mean that foil cover stay on satellite for good? or it will remove before launch? sorry I am bit confused here.

regards
Jailer

 

[Frank Martin]

Thank you very much mate ...so its mean that foil cover stay on satellite for good? or it will remove before launch? sorry I am bit confused here.

regards
Jailer

Its not a gold foil..rather may be a metallized Mylar or Kapton Polymide film..MLI (multi- layer insulation, aka thermal blanket) is made up of many layers of aluminized polyimide. Polyimide is a type of plastic, and yellow in color. It's coated with aluminum on the inside surface so it looks gold. Bare aluminum reflects radiation very well, which means it absorbs heat very slowly. But it also radiates heat VERY slowly. An aluminum foil sitting in vacuum in direct sunlight will heat up to a pretty high temperature. Plastic film with aluminum backing absorbs heat a little faster, but it also radiates heat a lot faster, so it works better as the outer-most layer of the MLI.

The covering of many components may stay as it is.

 

[ashokdeiva]

Thank you very much mate ...so its mean that foil cover stay on satellite for good? or it will remove before launch? sorry I am bit confused here.

regards
Jailer

That will be there for the rest of the Satilites life until it expires and crashes back to our atmosphere

 

[Swati Shukla]

Congratss ISRO...

 

[Gandhi G in da house]

alhamdolillah ... good news.

 

[AnGrz_Z_K_Jailer]

Thanks a lot for formative post " Martin & Ashok" You make my life easier. Now can sleep peacfully all the night..

regards
Jailer

 

[Soumya_india]

Congratulation to ISRO & every indian....

and thats the video of PSLV C-18 launch

cheers...