| Abstrakt: |
This paper discusses the calculation and implementation of dampers systems on LAPAN-A4 satellite payloads. The LAPAN-A4 satellite payload consists of many components (electronic, mechanical, optical). In terms of resistance, these components are quite sensitive to vibrations. To avoid failure due to these vibrations, we have to make a damping system that can reduce the vibrations that will hit the payload. The method used in the damping system is use wire rope isolators (steel springs), this method was chosen because it is easier to calculate and install, the other considerations due to wire rope isolators are stable and not affected by extreme temperatures, chemicals, oil, ozone, and abrasive materials. Damping calculation of the wire rope isolator will produce some data, namely Total Supported Load (Wt), Numbers isolators (n), static load per isolator (W), excitation frequency (fi), system response natural frequency for 80% isolation (fn) and maximum isolator vibration stiffness (Kν). Based on the calculation, steel spring in the compression position obtained W= 34.78 N and Kν = 125.87 kN/m with a total of 34 springs. Whereas for the spring in the shear or roll position obtained W= 17.21 N and Kν = 15.57 kN/m with a total of 20 springs. The value of (Kν) compression and the (Kν) shear or roll obtained is sufficient to reduce vibrations that occur in the components in the payload. The results of this calculation are preliminary predictions of the design and configuration of the LAPAN-A4 payload, further testing needs to be done at the sub-system level as verification before implementation and testing at the satellite level with expectations that the LAPAN-A4 satellite payload components can receive vibration loads during launch. [ABSTRACT FROM AUTHOR] |
