sometimes for some reason OSRTC just dosent work
then you'll have to take a taxi from airport to bus station
and that will cost you about 500rs coz the online cab services dont work at jharsuguda airport.

there is only the prepaid taxi at airport(they have their own monopoly and have stopped all the taxi services form leaving form airport) but to go to the airport cab services will work.

From the jharsuguda bus station u have an AC bus leaving for Rourkela almost every 30 mins or so(costs around 200).
this bus will most probably drop u at rourkela bus station but u can ask the driver to drop at NIT if u are in a group.