Definition EN: traditionally fan or cone marker filling radio-range cone of silence,typically with audible 3 MHz tone(arch)

Definition EN: traditionally fan or cone marker filling radio-range cone of silence,typically with audible 3 MHz tone(arch)

Definition EN: traditionally fan or cone marker filling radio-range cone of silence,typically with audible 3 MHz tone(arch)

Definition EN: the legitimate use of a public transport system without fare payment required

Definition EN: a launcher which supports a missile in position at a number of discrete points from which it can be released simultaneously when the build-up of thrust is sufficient to ensure an effective launch

Definition EN: angle of attack at which aerofoil generates neither positive nor negative lift

Definition EN: a line through the trailing edge of an aerofoil section parallel to the direction of the relative airstream when the lift is zero

Definition EN: device which disposes of a graduated scale with zero value in the middle of it,showing positive and negative values as well

Definition EN: the distance a propeller would advance in one revolution so as to deliver no thrust

Definition EN: angle of attack at which aerofoil generates neither positive nor negative lift

Definition EN: angle of attack at which aerofoil generates neither positive nor negative lift

Definition EN: process of adjusting the pointer of an electrical measuring instrument so that the needle rests over the zero mark on the dial when no current is flowing through the moving coil of the metre

Definition EN: a fare structure in which the cost of a trip is a function of the length of the trip,measured in terms of defined zones

Definition EN: graphical representation of the fare zones of a transit system

Definition EN: abnormally steep climb trading speed for height

Definition EN: utilizing kinetic energy to gain height