Hello Harrish,

Yes, you can do M.Tech Aerospace engineering after doing B.Tech Manufacturing engineering. However, most of times it depends on the college. Most colleges have the minimum qualification for admission to M.Tech is B.E. or B. Tech. with at least 50% (60% for IITs) marks in aggregate or equivalent CGPA from a recognized university and a minimum of 60% in class 10 and 10+2.Make sure to give any M.Tech Exams such as GATE etc.

Hope that helps and feel free to ask if you have any more queries. Best of luck!