Design of Prototype Assemblies in Selected Line Replaceable Units of AN/APQ-109 FCS,
ARINC RESEARCH CORP SANTA ANA CALIF WESTERN DIV
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During the latter half of 1970, ARINC Research Corporation conducted an availability analysis of the ANAPQ-109 Fire Control System of the F-4D aircraft. The work, performed under Contract F09603-70-A-2026-QP02 with the Ogden Air Materiel Area, was primarily directed toward determining the product improvement potential inherent in the FCS design. Specific problem areas in APQ-109 equipments were identified and recommendations were offered for correcting them. Analysis of available data indicated that implementation of the recommended product improvement program has the potential of increasing the operational availability and decreasing the maintenance manhours per flying hour for the APQ-109. The aforementioned study revealed that most of the maintenance time and effort associated with the APQ-109 was expended in adjustment-type repairs rather than in the replacement of failed parts or line replaceable units LRUs. The majority of the electrical instability problems were found to be concentrated in three LRUs a Indicator Control Unit, WUC 74780 b Synchronizer, WUC 74710 and c ReceiverTransmitter, WUC 74790.
- Active and Passive Radar Detection and Equipment
- Fire Control and Bombing Systems