The original McLaren F1 press release in full - Every detail of the incredible V12 supercar - McLaren F1 ground effect

As McLaren re-publishes the full, original 1992 press release for its F1 supercar, it's a perfect time to celebrate the F1, we think

GROUND EFFECT

BY DIRECTING AIRFLOW BENEATH THE WORKING UNDERFLOOR, AIRSTREAM IS HARNESSED TO GENERATE POWERFUL, STABILISING DOWNFORCE

The McLaren F1 is the world’s first production car to feature full ground-effect aerodynamics with fan assistance.

By careful management of airflow between the McLaren F1’s underfloor and the moving road surface beneath, powerful aerodynamic forces can be harnessed – as in Formula 1 – for the driver’s benefit.

Management of this airflow regime has come to be known as a ‘ground-effect’ aerodynamic system.

Airflow beneath the car is compressed against the underlying roadway and then released through an expanding-section exit channel at the car’s tail – the curving underfloor surface of which is known as the ‘diffuser’. As airflow velocity has been accelerated through this underfloor ‘venturi’ system, so the pressure within it falls, and this low pressure area may then be harnessed as ‘downforce’ to suck the moving car bodily down against the roadway.

In 1978 Gordon Murray stunned the Formula 1 racing world by creating the Swedish Grand Prix-winning Brabham BT46B ‘Fan Car’ driven by Niki Lauda, which generated massive aerodynamic downforce in part by fan assistance. Formula 1 rules were quickly altered to dismiss such devices!

Now, with the McLaren F1 project governed only by comparatively liberal international road-car regulations, that ‘Fan Car’ theme is to some extent being re-introduced.

A complex three-part rear diffuser beneath the F1’s tail incorporates a central single surface and two reflex shapes each side generate sufficient downforce to overcome the car’s natural aerodynamic lift.

Simultaneously, two powerful electric fans remove boundary layer air from the rolled S-wave of ‘reflex’ diffuser sections, helping to control movement of the Centre of Pressure – the truly significant aerodynamic factor affecting vehicle stability and handling.

 

Most Popular

Porsche Taycan Cross Turismo revealed – 750bhp Turbo S to top crossover range
Porsche Taycan Cross Turismo - Turbo S front static
Porsche Taycan

Porsche Taycan Cross Turismo revealed – 750bhp Turbo S to top crossover range

Porsche expands Taycan range with new Cross Turismo high-riding estate
4 Mar 2021
Volkswagen Golf GTD 2021 review – fast Golf diesel no hot hatch, but a great daily
Volkswagen Golf GTD 2021 review - header
Volkswagen Golf GTD

Volkswagen Golf GTD 2021 review – fast Golf diesel no hot hatch, but a great daily

Frugal yes, but fiery? Not really. VW’s Golf GTD is a refined, comfortable and desirable daily, but doesn’t offer many thrills
5 Mar 2021
BMW M3 and M4 lifted to 612bhp by Manhart Performance 
Manhart Performance BMW M3
BMW M3 saloon

BMW M3 and M4 lifted to 612bhp by Manhart Performance 

German tuner Manhart Performance has extracted more performance from BMW’s new M3 and M4
4 Mar 2021