Research for Costs

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June 1, 1974
Simple and multivariate statistical techniques are employed to quantify ship overhaul policies to determine if excess capacity existed in Navy shipyards prior to the escatlation of hostilities in Southeast Asia in 1964. Additionally, economic theory is used to interpret the mathematical models.
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June 1, 1974
Many recent economic and inventory studies have included various types of fixed or lump-sum costs as important determinants of optimal behavior. In this paper, the classical inventory model is augmented to include fixed shortage costs. In general, the presence of fixed shortage costs can lead to complex optimal solutions. The purpose of this paper is to establish a set of sufficient conditions which guarantee the existence of an optimal ordering policy which is unique. The resulting optimal policy is described by a unique set of critical numbers which are bounded and decrease monotonically over the horizon for which the inventory system is to be operated.
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June 1, 1970
Studies the relationship between aircraft readiness and spares usage at the squadron level, specifically for the F-4B, CH-53 and TA-4F. The study determines the best combinations of aircraft, maintenance man-hours, and spare parts for various budgets. Since the availability of spare parts is a big factor in aircraft readiness, a detailed examination was made of the spare parts resupply system, and recommendations are made for improving this system for decreasing the time it takes for a supply requisition to be filled. Additional recommendations are made for changing the current method of estimating the quantities of spare parts needed for a specific aircraft model.
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June 1, 1969
Documents the development of an applied model for planning pipeline aircraft procurement. Using the techniques of network analysis, the model is illustrated with the A-7 aircraft undergoing Progressive Aircraft Rework (PAR) at Naval Aircraft Rework Facility, Jacksonville. A range of pipeline factors for the A-7 is evaluated and suggestions are made for applying the model to other type, model, and series of aircraft.
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August 1, 1964
An engineering examination is made of a subsonic analog of the F-111A to determine what savings can be made in terms of weight and cost. It is concluded that so long as both planes have the same mission, both planes will have nearly the same gross takeoff weight. Savings in cost appear to be substantial, however, and a detailed cost analysis is being prepared for separate distribution.
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September 1, 1949
The relative capabilities for the delivery of bombs to USSR target areas circa 1950 are estimated for typical medium and heavy bombers - the B-36, B-50, and B-47. The effects of navigation errors, bombing accuracy, diversionary raids, and hours of darkness are discussed. These measures are combined to compare the relative suitability of aircraft types and flight plans, and to provide rough estimates of force requirements for conventional or atom bombing campaigns. Measures of the economic cost, and the cost in strategically critical aviation fuel, per ton of bombs delivered, are compared for the various aircraft, flight plans, and refueling plans.
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