Battery Operated Hydraulic Rig to Charge the Parking Brake Accumulator of Aircraft
Journal Title: Scholars Bulletin - Year 2016, Vol 2, Issue 7
Abstract
Abstract:This paper enables to collect all the relative information about parking brake system, changes of improving the current system. Parking brake is one of the important parts of an aircraft. The function of parking brake system is to slowly stop the aircraft safely at desire place on the ground. The purpose of using the hydraulic accumulator in parking brake system is to store the hydraulic liquid under system pressure. For proper brake operation the accumulator are charged to the pressure of 207 bar. Earlier the manual hand pumping is used to charge the accumulator which is time consuming not so accurate pressure is filled in an accumulator to overcome such problems the battery operated hydraulic rig is developed. This is capable to charge the 50 parking brake accumulators of aircraft once the battery is fully charged. Since it is battery operated so no continuous 3-phase supply is required in the field. Systems will supplies hydraulic pressure to the aircraft parking brake accumulator. The DC motor is operated by a rechargeable LiFePo4battery, it acts as a source for the motor/pump unit. The pressure switch is used to monitor the pressure in the accumulator. Inline filter is used to filter the oil of the rating 3 micron rating absolute. The LiFePO4 battery charge indication circuit is developed. Hydraulic rig build the 207 bar pressure in the accumulator in an interval of 20sec. The discharge voltage characteristic of LiFePO4 battery and temperature characteristics of pump and dc motor are studied. Keywords: LiFePo4 battery,DC motor,Pressure switch,check valve, MIL-H-5606 oil,Inline Filter.
Authors and Affiliations
Abdulgaffar Doddamani, Vinod Kumar MS, Kishore Naik, C . Mallikarjuna
Keywords
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