I second the Purdue program, DD’s friends have done it and it is really great. Also MIT has a longer one and the application is still open. It is called MITES and here is the link: https://oeop.mit.edu/programs/mites In fact google the term “MITES” which stands for Minority Introduction to Engineering and you find some other ones. My DD did one at UVA that she really enjoyed and it helped her decide on ME. Many of the programs have financial aid if you can’t afford them. Some like SAMS at Carnegie Mellon are free. There is a forum here on CC for summer programs that list more of them. Also Black Excel has a good listing of a lot of summer engineering programs. http://www.blackexcel.org/summer-progs.htm
In addition to helping you learn about the different kinds of engineering majors, it has been my experience that such programs are helpful in the college admissions process by allowing a student to “test drive” college enviroments and by demonstrating to the college that you are familiar with the engineering discipline. My DD did such a program and the contacts she made during it lead to many more opportunities for her.
By the way my DD is an ME and she has gotten a lot more internship offers than her AE friends in the AE fields at major companies. I would recommend an ME degree then getting an masters in AE. You would be more marketable and many companies like GE Aviation would pay for your AE Masters.