Air Navigation Revision Notes LO1: Be able to carry out calculations to determine aircraft distance, speed and time travelled 1 degree of Latitude is equal to 60 nautical miles 1 minute of Latitude is equal to 1 nautical mile Latitude is measured in degrees and minutes to the North and South of the Equator The distance between two points on a navigation chart can be measured with dividers using the minute scale along a meridian, close to the area of interest on the chart Direction of Earth Rotation - West to East Aviation Speed is measured in knots (nautical miles/hour) Air Speed Indicator calculates speed by measuring the pressure difference between the pitot and static pressure Calibrated or Rectified Air Speed equals Indicated Air Speed after correction for Pressure and Instrument Error Rectified Air Speed after correction for Altitude and Temperature becomes True Air Speed (TAS) Universal Time is also known as Greenwich Mean Time and is the standard time used in military and commercial aviation LO2: Understand principles of vectors and triangle of velocities to establish aircraft’s and ground speed A vector is a straight line representing speed and direction. The length of the line is proportional to speed and the direction determined by the angle between the line and a datum line When one vector is added another vector the addition is known as the resultant A Velocity consists of Speed and direction together The Air Triangle Heading Vector (Heading & True Air Speed) Wind Vector (Wind Speed & Direction)
Air Navigation Revision Notes LO1: Be able to carry out calculations to determine aircraft distance, speed and time travelled 1 degree of Latitude is equal to 60 nautical miles 1 minute of Latitude is equal to 1 nautical mile Latitude is measured in degrees and minutes to the North and South of the Equator The distance between two points on a navigation chart can be measured with dividers using the minute scale along a meridian, close to the area of interest on the chart Direction of Earth Rotation - West to East Aviation Speed is measured in knots (nautical miles/hour) Air Speed Indicator calculates speed by measuring the pressure difference between the pitot and static pressure Calibrated or Rectified Air Speed equals Indicated Air Speed after correction for Pressure and Instrument Error Rectified Air Speed after correction for Altitude and Temperature becomes True Air Speed (TAS) Universal Time is also known as Greenwich Mean Time and is the standard time used in military and commercial aviation LO2: Understand principles of vectors and triangle of velocities to establish aircraft’s and ground speed A vector is a straight line representing speed and direction. The length of the line is proportional to speed and the direction determined by the angle between the line and a datum line When one vector is added another vector the addition is known as the resultant A Velocity consists of Speed and direction together The Air Triangle Heading Vector (Heading & True Air Speed) Wind Vector (Wind Speed & Direction)
Revision-Information-Sheet.docx