GB816770A - Improvements in or relating to tilt correctors - Google Patents

Abstract

816,770. Ordnance. VICKERS-ARMSTRONGS (ENGINEERS) Ltd. May 25, 1954 [July 14, 1953], No. 19593/53. Class 92 A gun, controlled by a computor, has a tilt corrector supported on the gun mounting which modifies the computor signals before their application to the elevating and training motors, to allow for the tilt of the mounting. The corrector is adjusted, manually, by means of two levels, and effects a rotational displacement between the motor shafts and the magslips supplying the motor amplifiers. As shown, Fig. 1, the gun 1 mounted on platform 4 is positioned by the elevating motor 12 and training motor 8 controlled, with respect to the true horizontal and vertical, by computor 18. In each case the imput signal to the motor is modified by both a resetter forming a follow-up remote control system of the kind described in Specification 748,073 [Group XXXVIII] and the tilt corrector 13 mounted on 4. The tilt corrector, Fig. 3, has two manual inputs applied on hand wheels 33, 40 and two mechanical inputs, GE, GT supplied to shafts 14, 15 from motors 12 and 8 respectively. The electrical outputs, which are supplied to the motor input amplifies 20, 22, are produced on magslips 75, 76 and 78, 79. Normal control by computor 18. The training motor 8 drives pin 48 through shafts 15, 37; the shaft 14 is driven by 12 and the mechanical signals at 14, 48 are modified to produce three further mechanical signals, one of which controls magslips 75, 76 and two of which control 78, 79. In the control of 75, 76 the original signals are combined by means of slider 54, differential 68 and shaft 73 to operate cam 66 on shaft 63. The follower 65 is set by slider 56 controlled by 48. In control of 78, 79, the first signal is produced at shaft 61 by cam 62 mounted on shaft 63 while the second signal is applied through slider 54 and shaft 80. Manual adjustment of tilt corrector. First, the handwheel 33 is rotated and the gimbol 26 turned until the level 28 is horizontal, the cam 46 and the wheel 51 moving together. Secondly, handwheel 40 is rotated and the tilt setting cam 31 is turned until the level 27 is horizontal. Relative motion occurs between 46, 51 and pin 48 is set at a radius proportional to the angle of tilt.