Data access for project

Hi,
I am currently looking for data for a reactive system student project (HTWG Konstanz). We got assigned airplane / airport data as our topic. But one of the requirements is to constantly update the used data at least once every few seconds. As anyone knows, there is no free API which would support such many requests. Therefore our idea: get the data from somewhere and simulate / replay it.
Which leads me to my question: Is it possible to download a section of the data, , from somewhere? We will then find out for ourselves how to play it back.

Thanks in advance!
Nick

Can I ask potentially a silly question, what is the difference between these two files as found in the datasets url?

"" vs. ""

Thanks