COURSE HORIZON Russian patent published in 1994 - IPC

FIELD: instrument engineering. SUBSTANCE: course horizon has case filled with damping liquid. Gimbal suspension has external frame made in form of a fork and internal frame made in form of a disk provided with half-axes which are mounted in external frame on rotation supports. Bushing is fastened rigidly to the center of internal frame. Two rotation supports are mounted inside the bushing; the supports have vertical axis onto which bottoms are rigidly fixed. The bottoms are tightened with hemispheres of card. The hemispheres form hollow space. External frame has semi-axis which is mounted onto rotation supports in tag made in form of a hollow cylinder of case. Case has conic part, cylindrical part and wall. The case is closed by hemispherical slide from the front side; roll-scale and airplane symbol are drawn onto internal part of the slide. Movable roll index is fixed by means of a holder. Four permanent magnets are mounted onto the bottoms close to protrusions. Pitch and course marks are drawn onto the hemispheres. Airplane symbol has central index made in form of a circle which is used for counting pitch and roll angles. Roll-scale has angle of roll marks, 90-deg angle of roll mark and zero motionless index. Central index is attached airplane symbol by means of holders. Tag is closed by plug. Technological space is formed between internal frame and bottoms. EFFECT: improved precision. 3 dwg