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Gyroscopic Instruments

3 inch Electric Attitude Gyros - Model LUN 1241

       The rugged 3-inch Electric Attitude Gyro (indicator) is a direct reading instrument indicating pitch and roll (bank) attitude. Its operational range is through 360° both in pitch and roll. There is a field of controlled precession at pitch attitudes exceeding ±70°. The primary display component is a spherical surface with a scale providing for pitch attitude indication within ±20°. On reaching this limit a window in the display surface opens and a digital pitch angle presentation is displayed up to a value of ±70°. The roll attitude is indicated on a roll attitude scale up to ±90°. The display corresponds with viewing the earth’s surface from an aircraft. The attitude gyro is provided with a caging gear, with an aircraft symbol (with position adjustable between +10° and –7° of pitch attitude) and with visual malfunction indication. All instruments are offered to comply with customer’s specification and are mounted for easy servicing.

Specification and Model Designation

Technical drawing - Standard and ARINC

Leaflet

3 inch Turn Indicator - Model LUN 1216

       Turn indicator is an instrument measuring an angular velocity within ±3°/s of aircraft vertical axis which corresponds to parameters of the turn performed at speed of 350 km/h at the bank of 45°. Turn indicator incorporates a liquid level indicating a slip during turn. Reaching of gyro’s operating speed is indicated by covering of OFF sign at turn indicator dial. The deflection greater than corresponding to an angular velocity of ±4°/s is limited by a dead stop.

Specification and Model Designation

Technical drawing - Model A and Model B

Leaflet

Electric Attitude Gyros - Model LUN 1205

       Flight instrument indicating the position of the aircraft in relation to the horizontal plane, viz. gradient and bank of the aircraft.  During flight it provides a substitute for the natural horizon. It also acts as a transmitter for other equipment of the angle of bank and pitch.  The pitch indication is shown by means of a transverse clinometer with a ball in the lower part of the face of the instrument.  The instrument signals the non-operative state of the gyromotor by means of a red flag. It gives a signal when reaching a transverse bank of  32 in flight and 15 during climb and approach.

Specification and Model Designation

Technical drawing - Standard and ARINC