Hi. I'm doing electrical engineering but I can tell you from the engineering aspect what its like.
If you want to do engineering you have to see what type of work you enjoy most. Do you playing with gadgets and exploring what they could be used for? Do you think you would enjoy working in a team or by yourself on a specific design problem? Do you enjoy using maths to solve and interpret problems? Do you find looking at the principles and basics behind something as interesting?
These traits are important when considering engineering, because you have to enjoy the work you are doing. The only way to enjoy it is to enjoy what is involved in it all the time.
Aerospace engineering is integrated closely to mechanical engineering. The main difference would be that mechanical engineers work with solid materials and interactions more than aerospace engineers whom would work more with gaseous interactions and possibly electronics/communication.
I encourage you to do your research carefully about which engineering discipline you want to do. Engineering is so broad and there are so many specialisations that you can enter, which means that you should look at all the disciplines there are and research about them more.
Back when I was in your shoes, I was wanting to do Chemical. I was definitely going to do engineering as that was my aspiration, but I was not informed enough about each discipline. I did not start considering electrical until mid year 12, and when my eyes opened up to it I kept it short-listed as a possibility. In the end I can say I made the right choice after declining a scholarship for Chemical. I made the choice because I was informed of what each discipline was like and the possible job types it could land me which I had always dreamt of doing one day.
So at this stage the most important thing for you is to find out about each discipline and pick the right one for you.
When researching, look at the content involved in each discipline, get to know where each can lead you and whether those jobs are the types of jobs you can imagine doing for years on end. Understand what you enjoy and which study/career (not only in engineering) best suits you.
I can tell you what is involved in electrical and maybe a little in other disciplines as I had done a lot of research into them. I enjoy what I'm doing now because its really interesting and it is study I enjoy. The best thing is to check what interests you most and what you would enjoy doing.
In NSW there are many Universities.
UNSW, USyd, University of Technology, Sydney (UTS), University of Wollongong (UoW), University of Western Sydney (UWS) are just a few that come to mind that offer engineering. However I think only UNSW and USyd offer Aerospace engineering.
If you are doing engineering, it might be best for you to stick to UNSW, USyd or UTS. They tend to have the most comprehensive engineering degrees (notably UNSW, which is where most engineers come from).
