Tesla Roadster Secret Fan System – Could THIS Be the Demo?

Tesla has been building anticipation around the next-generation Roadster for years, but one of the biggest questions remains exactly what the company intends to demonstrate when the car finally takes center stage. Nothing about an upside-down driving demonstration has been confirmed by Tesla, but recent patent illustrations surrounding an unusual fan-based aerodynamic system raise an interesting possibility.

The basic idea appears to involve moving large amounts of air from underneath the vehicle and directing that airflow toward the rear. If such a system creates a sufficiently strong low-pressure area beneath the Roadster, it could potentially generate enormous amounts of downforce without depending entirely on vehicle speed.

That immediately brings to mind the McMurtry Spéirling. Its fan-assisted downforce system can generate substantial suction even while the vehicle is stationary. McMurtry famously demonstrated the concept by placing the car upside down on a specially constructed rotating platform, showing that the fan-generated downforce was capable of supporting the vehicle’s weight.

Could Tesla attempt something similar with the Roadster?

Again, there is currently no confirmation that Tesla plans such a demonstration. However, if the Roadster’s proposed system can generate downforce approaching or exceeding the weight of the vehicle, an upside-down demonstration would provide an extremely visual way of showing what the technology can do.

There could also be another potential benefit.

If a significant volume of air is accelerated through the system and expelled rearward, the reaction force could potentially contribute some forward thrust. That would mean the Roadster would not necessarily have to depend entirely on its tires transferring electric motor torque to the pavement during extreme acceleration.

That distinction could become important when attempting acceleration figures beyond what today’s quickest production electric cars can achieve. Electric motors are already capable of delivering enormous torque almost instantly, but ultimately the tires have to transfer that force to the road. Additional forward thrust produced independently of the driven tires could introduce another source of acceleration.

There are still major unanswered questions. Tesla has not disclosed enough technical information to determine exactly how much downforce or thrust such a system could produce, and patent drawings do not guarantee that the technology will appear on the production Roadster.

For now, the idea remains a theory.

But if Tesla wants a dramatic demonstration that immediately communicates what makes the Roadster different from every other electric supercar, watching one remain attached to a platform as it rotates upside down would certainly accomplish that. And if the same technology can also contribute to the Roadster’s acceleration, the fan system could potentially serve 2 very different purposes.