Mach tuck significant in causing a tendency to dive, delta-winged aircraft with no foreplane or tailplane in the first case and, for example, the Lockheed P-38 in the second case. Alternatively, a particular design may have no significant tendency, for example the Fokker F28 Fellowship. As an aerofoil generating lift moves through the air, the air flowing over the top surface accelerates to a higher local speed than the air flowing over the bottom surface. When the aircraft speed reaches its critical Mach number the accelerated airflow locally reaches the speed of sound and creates a small shock wave, even though the
David Mach Scotland from 1974, graduating in 1979, then at the Royal College of Art, London between 1979 and 1982. Following several shows and public installations, Mach was nominated for the Turner Prize in 1988. In 2000 he joined the Royal Academy of Arts as Professor of Sculpture. David Mach David Mach (born 18 March 1956) is a Scottish sculptor and installation artist. Mach was born in Methil, Fife. His artistic style is based on flowing assemblages of mass-produced objects. Typically these include magazines,vicious teddy bears,newspapers, car tyres, match sticks and coat hangers. Many of his installations are temporary and constructed in