I visited this place on a business trip as I had a day spare and was not disappointed. The range of exhibits here is amazing and fascinating.
You also have the opportunity to go up into a disused observation tower and view the information that flight controllers see while you watch the aircraft come and go at the nearby airport. The view is stunning.
I'd recommend children are not too small if you bring them; around 7 or 8 as a minimum age as there's a lot to see but you have to have at least a basic interest.
I'd come here a second time, it's definitely worth it.