Hello aspirant,
For becoming an aeronautical Engineer you have to choose physics, chemistry and mathematics in class eleventh and after twelth you have to do bachelor's degree program, usually in aerospace or aeronautical engineering, that has been approved by the Accreditation Board for Engineering and Technology (ABET). Programs can take 4-5 years to complete.
Hope your doubts are clear now.
Good luck.

Hello Aspirant,

To move in the field of aeronautics engineering you need to
follow the given career pathway.

First, complete your 10+2 with PCM and decent marks
Second, join a B.Tech program with aeronautics
engineering discipline. You can do this by either getting
through JEE or through any private institution.

The best institute for aeronautical engineering are:

1. IIT Bombay
2. IIT Madras
3. IIT Kharagpur
4. IIT Kanpur
5. IIST Thiruvananthapuram
6. Madras Institute of Technology, Chennai
7. Hindustan Institute of EngineeringTechnology, Chennai
8. Nehru College of Aeronautical and Applied Science, Coimbatore
9. School of Aviation Science and Technology,Delhi
10. Punjab Engineering College, Chandigarh
11. Indian Institute of Technology, Patna

Hope this helps.
Good luck.