Definition The Brabham BT46 was a Formula One racing car designed by Gordon Murray and developed by the Brabham team for the 1978 Formula One season.
Overview The Brabham BT46 competed during the 1978 Formula One World Championship. It was powered by the Alfa Romeo flat-12 engine and featured several innovative design elements. The car is most notable for its controversial "fan car" variant, the BT46B, which was used in a single race and subsequently withdrawn from competition. The Brabham team was led by Bernie Ecclestone at the time, and the car was primarily driven by Niki Lauda and John Watson.
Etymology/Origin The name "Brabham" refers to the racing team founded by Jack Brabham, a former Formula One driver and constructor. The "BT" designation follows the team's naming convention, standing for "Brabham Tauranac," in reference to Ron Tauranac, the team's original designer. The number "46" indicates it was the 46th model developed under this system.
Characteristics The BT46 featured a lightweight aluminum monocoque chassis, mid-engine layout, and utilized the powerful Alfa Romeo 12-cylinder engine. Its most distinctive version, the BT46B, incorporated a large rear-mounted fan driven by the engine. The fan was designed primarily to cool the engine but also increased downforce by evacuating air from beneath the car, creating a ground effect. This design led to debates about its compliance with technical regulations, as competitors argued the fan was a movable aerodynamic device, which was prohibited. The car won its only race at the 1978 Swedish Grand Prix with Niki Lauda at the wheel but was withdrawn after protests from other teams.
Related Topics
- Ground effect in aerodynamics
- Alfa Romeo in Formula One
- Brabham racing team
- Gordon Murray (automotive designer)
- 1978 Formula One season
- Niki Lauda
- Fan car (automotive design)
- Formula One technical regulations