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The use of fault tolerant drives is a way to achieve reliability and high system availability in airplanes. To isolate electrical fault it has been proposed to use concentrated coils around stator teeth with spacer teeth in between the coils. The space harmonic content of the air gap flux density in this type of machine is high. During normal operation certain harmonics are cancelled. This paper investigates...
This paper documents a simulation study undertaken to gain insights into the vari-metric multi-echelon repairable inventory optimization method. The method was analyzed in the context of the Coast Guard's fleet of fixed and rotary wing aircraft, for which operational availability is the key performance metric. Failure rates of parts in this system exhibit variance-to-mean ratios higher than one, and...
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