Tethering aerodynamic components of the Dallara chassis is among safety enhancements announced by INDYCAR that will be implemented for the 2016 Verizon IndyCar Series season.
The high-tensile Zylon tethers minimize the possibility of components becoming detached from the race cars during accidents.
The rear beam wing and rear wheel guards will be tethered for all Verizon IndyCar Series events and the car’s nose will be tethered on superspeedways (1.5 miles or longer). Dallara also has designed a tethering system for the front wing main plane for the three superspeedways on the 2016 schedule – Indianapolis Motor Speedway, Texas Motor Speedway and Pocono Raceway.
Since 1999, Verizon IndyCar Series cars have employed wheel restraints attached to the chassis and suspension. The Suspension Wheel/Wing Energy Management System (SWEMS) also includes one or two restraints attached from the rear wing main plane to a secure location on the transmission.
“It is a continual goal to improve safety for all the participants, fans and drivers alike,” said Will Phillips, INDYCAR Vice President of Technology. “We also need to do this in a fashion that does not create more yellow-flag racing and try to prevent as much debris as possible. We have great support from our partners to improve safety and wish to thank Chevrolet, Honda and Dallara for their participation and efforts in working together to implement change.”
Other changes for the 2016 season as part of INDYCAR’s ongoing research and development to improve the on-track product and safety include:
*A domed skid plate on the underside of the chassis, which improves its yaw/spin characteristics, will complement rear wing flaps that deploy at 90 degrees if a car spins and travels backward on a superspeedway. The package will minimize the incidence of the car becoming airborne.
The rear wing flaps have been tested in wind tunnels at General Motors and Texas A&M University. Components are scheduled to be available for the April 6 test on the 2.5-mile Indianapolis Motor Speedway oval.
*An update to the Engine Control Unit (ECU) prevents a car from moving forward during a pit stop if the gearbox is not in neutral while the fuel hose is attached. Through the ECU, the fuel probe activation sensor can stop the car from moving forward by returning the engine to idle and engaging the clutch if the car is not in neutral when the fuel probe is plugged in.
*Another ECU update puts the engine in idle faster if too much pressure is applied to the throttle or brake pedal. The throttle pedal failsafe will engage and idle the engine when pressure applied to either the throttle or brake pedal exceeds a calibrated threshold.