Hi there,

Some of best aeronautical engineering  colleges in Tamil nadu are following:

Sathyabama University

BIT Sathy

MIT Chennai

HITS chennai

BSAU Chennai

SASTRA University

Rajalakshmi engineering college

HICET coimbatore

For more details follow this link:

https://engineering.careers360.com/colleges/list-of-aeronautical-engineering-colleges-in-tamil-nadu

Hope it helps you

Good luck!