The Jaguar D-Type is a sports racing car that was produced by Jaguar Cars Ltd. between 1954 and 1957. Designed specifically to win the Le Mans 24-hour race, it shared the straight-6 XK engine and many mechanical components with its C-Type predecessor. Its structure, however, was radically different, with innovative monocoque construction and slippery aerodynamics that integrated aviation technology, including in some examples a distinctive vertical stabilizer.
The aerodynamic influence was partly the work of Malcolm Sayer, who had joined Jaguar following a stint with the Bristol Aeroplane Company during the Second World War and later worked on the C-Type. The D-Type required a minimal frontal area.
Reducing underbody drag contributed to the car’s high top speed; for the long Mulsanne Straight at Le Mans, a fin was mounted behind the driver for aerodynamic stability.
Elements of the body shape and many construction details were used in the Jaguar E-Type from 1961 to 1969.
Jaguar D-Types fielded by a team under the leadership of Jaguar’s racing manager Lofty England were expected to perform well in their debut at the 1954 24 Hours of Le Mans race. In the event, the cars were hampered by fuel starvation caused by problems with the fuel filters, necessitating pit stops for their removal, after which the entry driven by Duncan Hamilton and Tony Rolt speeded up to finish less than a lap behind the winning Ferrari. The D-Type’s aerodynamic superiority is evident from its maximum speed of 172.8 mph (278.1 km/h) on the Mulsanne Straight compared with the 4.9 litre Ferrari’s 160.1 mph (257.7 km/h). Three weeks later the D Type won the Rheims 12 hour endurance race.
For 1955 the cars were modified with long-nose bodywork and engines uprated with larger valves. At Le Mans, they proved competitive with the Mercedes-Benz 300 SLRs, which had been expected to win. Mike Hawthorn’s D-Type had a narrow lead over Juan Manuel Fangio’s Mercedes when another Mercedes team car was involved in the most catastrophic accident in motorsport history.[6] Driver Pierre Levegh and more than 80 spectators lost their lives, while many more were injured.
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