A3 11.2 Determine an upper bound for each of the following aircraft subsystem MTTRS if asystem availability goal of 0.95 is desired. Assume that repair restores the subsystemto as good as new condition and each subsystem has the same availability.SubsystemTime between failuresParametersPropulsionWeibull0= 1000; B= 1.7AvionicsExponentialA= 0.003StructuresWeibull0= 2000; B= 2.1ElectricalWeibull0= 870; B=1.8EnvironmentalExponential2= 0.001 What is the MTTR for structures in Problem 11.2?O 11.6O 19.020.318.2

MTTR starts the second a disappointment is distinguished and incorporates demonstrative time, fix…

Answered: 11.2 Determine an upper bound for each…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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A manager is going to purchase new processing equipment and must decide on the number ofspare parts to order with the new equipment. The spares cost $200 each, and any unused spareswill have an expected salvage value of $50 each. The probability of usage can be described by thisdistribution:Number 0 1 2 3Probability .10 .50 .25 .15If a part fails and a spare is not available, two days will be needed to obtain a replacementand install it. The cost for idle equipment is $500 per day. What quantity of spares should beordered?a. Use the ratio method.b. Use the tabular method (see Table 13.3).
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The final stage on a production line for a repairableproduct comprises an old final test station withaccompanying analysis and repair stations.First Time Yield (FTY) is 0.720. To improve quality the old test station is replaced by anew model with higher performance.Using the production line final stage parameter values inTable QB1, on the next page, calculate thenew FTY Original final test time 15.0 minOriginal final test effectiveness 0.900New final test time 14.9 minNew final test effectiveness 0.930Analysis time 60.0 minRepair time 15.0 minTest station cost $100,000Analysis station cost $200,000Repair station cost $150,000Test cost $160 per hour per stationAnalysis cost $425 per hour per stationRepair cost $128 per hour per stationWarranty cost $250 per warranty claim perdefective product shipped
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