AIR HORIZON

Observing the position of the silhouette depicted on the instrument scale relative to the moving line of the sky, the horizon, the pilot judges the presence and magnitude of these angles. The aircraft slide indicator 7 with a zero position mark 8 is also mounted in the A. body. In the past, A. with pneumatic was used. gyroscopes and corrective devices; in the future, A. S. electrich became widespread. gyroscopes and corrective devices. The total error of electrical readings. A. when flying in a straight line, it does not exceed 10, and after exiting the turn with a roll of 200 at an aircraft speed of 400 km / h -20, which practically makes it possible to pilot out of sight of the ground.

The appearance of an aircraft horizon with a spherical scale and a slide indicator.

As soon as the axis coincides with the vertical, precession stops. In practice, the most common ones are A., in which the silhouette of the aircraft 2 is applied on the front of the device, stationary relative to the body 1 and, consequently, the aircraft. Behind the silhouette there is a sphere 3, the position of which is stabilized by a gyroscope. The lower half of the sphere is colored blue (sky), and the upper half is brown (earth). The dividing line of the colored hemispheres serves as the line of the arts, the horizon 5- Scales for measuring pitch angles 4 and roll 6 are also applied to the sphere.

AIR HORIZON, gyroscopic. a device for measuring roll and pitch angles is flying. the device.

AIR HORIZON, gyroscopic. a device for measuring roll and pitch angles is flying. the device. The pitch angle is the angle between the longitudinal axis of the device and the horizon plane, and the roll angle is the angle of inclination of the longitudinal plane of the device to the vertical. The main parts of A. are a gyroscope with three degrees of freedom, which keeps the position of its axis unchanged in space, and a pendulum correction system that eliminates deviations of the gyroscope rotor axis from the true vertical. In all cases of mismatch of the gyroscope rotor axis with the true vertical, a correction system consisting of a pendulum located on the inside. the frame of the gyroscope, and the correction motors, causes the axis to precess (its movement in a plane perpendicular to the direction of force application) until the axis occupies the position set for it.

AIR HORIZON, gyroscopic. a device for measuring roll and pitch angles is flying. the device.