Japanese rider Shinya Nakano spent a day in the wind tunnel at the Department of Industrial engineering at the University of Perugia, Italy.
Working with Aprilia race technicians, the aim of the test was to ascertain the current aerodynamic qualities of the bike and rider with a view to making additional improvements throughout 2009.
Nakano said: "It has been a very positive and interesting experience and I was impressed by the ability of engineers and the staff at the University of Perugia.
"We conducted several tests on my riding position, making the last little adjustments to obtain the best possible aerodynamics. The data that we collected will work to bring new solutions during the course of the season.
"I have to say that the current aerodynamics of the RSV4 are already good and did not need any immediate action.
Italian Max Biaggi will get his day in the wind tunnel in order to make adjustments to his set-up on 10th February.Both Biaggi and Nakano will be back in action on 16th and 17th February where they will test at the Phillip Island circuit prior to the opening round of the WSB championship on 1st March.