Development of Mounting Bracket for CCS electronic unit of Armoured Fighting Vehicle

Abstract

This paper describes the design and development of new mounting bracket replacing the old one. Commander Control station (CCS) is one of the accessories for the Armoured Fighting vehicle (AFV) sighting system and it is fitted on the mounting bracket in front of Commander’s station at turret roof plate of the AFV. It displays the thermal images of the Gunner’s main sight which is to monitor the Gunner Line of sight continuously by the Commander. During the trial, it was noticed that the existing CCS electronics units are malfunctioned. To know the cause of malfunction, it was planned to conduct the vibration analysis on the locations of CCS electronics units. Subsequently the level of vibration on all the locations were recorded and analyzed for various operating track profiles. The spectrum plot of CCS location for all these track profiles shows the overall vibration levels in the frequency band of 20- 2000Hz are well within the qualified limit. However the CCS electronics units show a resonance at 22.5 Hz in the lower frequency band where the amplitude is maximum may be of concern for electronic unit’s mal functionality. Hence a new CCS unit of light weight compact and durable is planned to retro fitment with the new modified compact mounting bracket on AFV. The mounting bracket is designed in such a way that the natural frequency of the same bracket to be away from 0-100Hz. This is achieved, by carrying out, Structural, Shock and Response Spectrum analysis.