GB580248A - Improvements in and relating to turn, bank and climb indicators - Google Patents

Abstract

580,248. Gyroscopic apparatus. JACK & HEINTZ, Inc. Nov. 16, 1943, No. 19107. Convention date, May 11, 1942. [Class 97 (iii)] A self-erecting gyro vertical for aircraft comprises a pendulous outer gimbal ring pivoted for 360 degrees freedom, a non-pendulous inner gimbal ring pivoted for limited freedom in the outer ring, and a single gyro rotor carried by the inner ring. As shown in Fig. 2, a rotor 16 universally mounted in gimbal rings 13, 10, non-pendulous and pendulous respectively, is spun about a vertical axis by air directed from a nozzle 25 on to buckets 26. A climb indicator card 30 is attached to the outer gimbal ring 10 and is read in conjunction with the customary level lines 34, Fig. 7. A bank indicator bar 33 carried by the inner gimbal ring 13 displays the angle of bank. A representation 31 of an aeroplane constitutes the zero point of the climb indicator. The indications shown in Fig. 7 are the result of a climbing turn to the right. A stop 18 on the inner gimbal ring 13 arranged to engage an arm 19 on the outer ring 10 prevents complete upsetting of the rotor and ensures its return to original position with its indicating elements, after manoeuvres of the craft. If the inner gimbal ring 13 wanders relative to the outer gimbal ring 10 it is precessed back 'to the normal position by the impact of the driving air jet upon the sides of the buckets. A directional gyroscope 46 carries on its vertical gimbal ring 40 a toothed ring 52 gearing with a compass card 54 which gives azimuth readings against a lubber line 57. The compass card may be raised out of gear and manually set by pushing-in and rotating a knob 58.