Aerodynamics is a branch of dynamics concerned with studying the motion of air, particularly when it interacts with a solid object. Aerodynamics is a subfield of fluid dynamics and gas dynamics, with much theory shared between them. Aerodynamics is often used synonymously with gas dynamics, with the difference being that gas dynamics applies to all gases.
Understanding motion of air (often called a flow field) around an object enables the calculation of forces and moments acting on the object. Typical properties calculated for a flow field include velocity, pressure, density and temperature as a function of spatial position and time. Aerodynamics allows the definition and solution of equations for the conservation of mass, momentum, and energy in air. The use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer simulations form the scientific basis for heavier-than-air flight and a number of other technologies.
Aerodynamic problems can be classified according to the flow environment. External aerodynamics is the study of flow around solid objects of various shapes. Evaluating the lift and drag on an airplane or the shock waves that form in front of the nose of a rocket are examples of external aerodynamics. Internal aerodynamics is the study of flow through passages in solid objects. For instance, internal aerodynamics encompasses the study of the airflow through a jet engine or through an air conditioning pipe.
Martin John Brundle (born 1 June 1959 in King's Lynn, Norfolk) is a British racing driver from England, known as a Formula One driver and as an F1 commentator for ITV Sport from 1997 to 2008, the BBC from 2009 to 2011 and Sky Sports from 2012.
Brundle contested the British Formula Three Championship with Ayrton Senna in 1983, finishing a close second, and the two progressed to Formula One the next year. Brundle failed to score a victory at the top level of single seaters, but he has been very successful in other disciplines. He was the 1988 World Sportscar Champion, with a record points haul, and won the 1990 Le Mans 24 hour Race for Jaguar in an XJR-12.
Brundle had an unorthodox route to Formula One. He began his racing career at the age of 12, competing in grass track racing, in the Norfolk village of Pott Row. In 1975, he moved to Hot Rod racing and received 'Star grade' status. In 1979, he started single seaters with Formula Ford. During this time, he also raced Tom Walkinshaw's BMW race cars, achieving second against a field of international drivers at Snetterton. He won the BMW championship in 1980 and partnered Sir Stirling Moss in the BP/Audi team of 1981. In 1982, he moved up to Formula 3 achieving five poles and two wins in his debut season. He won the Grovewood Award as the most promising Commonwealth driver. The next year, he battled Ayrton Senna for the F3 championship, which Brundle eventually lost on the final laps of the last race. In 1984, he was promoted to Formula One.
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