AER100 Lecture Notes - Lecture 6: Primary Flight Display, Pitot Tube, Calibrated Airspeed
Document Summary
Sea level pressure will not always be 29. 92" hg. Ideally sea level pressure would be 29. 92" hg and sea level temperature would be 15 degrees. Setting is what pressure at sea level would be with the given atmospheric conditions. Setting is displayed on altimeter by kollsman window: 3 needles are used to display hundreds, thousands, and ten-thousands, errors. "high to low, look out below: going from high pressure region to low pressure region will cause altimeter to over read, leading to tendency to descend to maintain indicated altitude. "low to high, clear blue sky: changes in temperature. Gyroscopic instruments: gyroscopic principles, rigidity in space. Spinning gyroscopes tend to remain in fixed plane of rotation: retains orientation relative to the earth as aircraft moves, assists in operation of adi and heading indicator. Includes markings for a rate 1 turn (360 degrees in 2 minutes) Inclinometer shows coordination: usually consists of a ball affected by centrifugal and centripetal forces.
