The Economics of Carbon Se-questration in Agricultural Soils

An angle of attack indictor for use as a cock pit instrument including movable elements which respond to the differences in pressure at selected points on the aircraft. The pressure points include total pressure sensed by the aircraft pitot tube (po), atmospheric pressure sensed at aircraft static pressure port (pJ), and pressure sensed from at least one port on wing surface (p). The difference of one pair of pressures is divided by the difference of a second pair of pressures to obtain the pressure coefficient which is a direct indication of the angle-of-attack of the aircraft.