Thanks for A2A..
Well there are no major core companies that come for campus placements when it comes to Aerospace Dept. But by maintaining a good CGPA, some area of research and practical knowledge everything can become a cake walk.
In India, the well known companies are:
- HAL
- DRDO
- ISRO
You can get an intern at HAL or DRDO by visiting their site frequently as they upload if there are any new vacancies created.