Achieving both powerful styling and improved aerodynamic performance
Minimize air resistance and maximize downforce
– Thoughts on the “GR Rear Wing” –
While many GT wings are already on the market, this one pursues functional beauty to make it stand out as a custom part, and employs a vertical mount that is rarely seen on commercially available vehicles.
Naturally, as a GR PARTS, it also offers functional value. The shape was optimized using CFD * analysis, and after careful tuning by the development driver, the increase in air resistance was minimized to ensure optimal downforce. It exerts a solid aerodynamic effect at various speeds, from winding roads to highway driving, improving handling stability. To achieve this, the angle can be adjusted to three stages to suit the vehicle condition and environment.
CFD analysis – flow comparison –
[Aerodynamic PKG II + GR trunk spoiler]
Total pressure distribution around the vehicle body (energy distribution)
Pressure distribution around the vehicle body
By blocking the airflow from the roof onto the trunk (①), pressure rises from the top of the trunk to the top of the spoiler (②), generating a force pushing the vehicle downwards (downforce). Because the top of the trunk spoiler is inclined relative to the airflow, a slight force pushing the vehicle backwards (air resistance) is also generated.
[Aerodynamic PKG II (excluding GR trunk spoiler) + GR rear wing]
Total pressure distribution around the vehicle body (energy distribution)
Pressure distribution around the vehicle body
The wing is placed where the energy of the flow around the vehicle is high, and its shape is optimized to match the flow. (3)
A pressure difference is created between the top and bottom of the wing (4), which allows the wing itself to generate downforce, minimizing airflow disturbance and increased air resistance caused by the wing.
At the same time, the negative pressure under the wing acts to pull air out from under the floor, improving the flow under the floor (5), reducing the pressure under the floor and generating downforce. (6)
Downforce can be generated more efficiently for the trunk spoiler.
【angle】
- ①0° (standard position): Vehicles equipped with GR PARTS [Aerodynamic PKG or II]
(excluding vehicles equipped with GR trunk spoiler) - ②1.25°: Vehicles equipped with large canards, front lip spoilers, etc.
- ③2.5°: Wet or slippery roads
*If installed alone on a vehicle without aero parts,
the front and rear aerodynamic balance will change, which may affect handling stability and ride comfort.
– Wearing effect (advantages & disadvantages)-
【merit】
-
- ・For vehicles already equipped with aero parts, it ensures appropriate downforce without increasing air resistance (suppressing without slowing down).
It demonstrates aerodynamic effects at various speeds, from winding roads to high-speed driving, improving handling stability. - ・Stylish and powerful rear styling
- ・Infusion molding (VaRTM: Vacuum-assisted resin injection molding) ensures durability and product strength
- ・For vehicles already equipped with aero parts, it ensures appropriate downforce without increasing air resistance (suppressing without slowing down).
→ Using only the lower die without the upper die, and using vacuum suction instead of pressure to form.
Main products: Wind turbine blades, small boats, etc.
[Disadvantages]
- ・Cannot be installed on vehicles equipped with the GR trunk spoiler. (OEM trunk garnish must be purchased separately.)
- ・If installed alone on a vehicle without aerodynamics, the front and rear aerodynamic balance will be disrupted (aerodynamic balance biased towards the rear).