Research for AIRCRAFT
December 1, 1978
A method for modeling elements of the Navy's CLAMP resupply system is described and examples presented.
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July 1, 1977
This report proposes flight and hangar deck layouts for carriers that would take advantage of the design opportunities offered by nuclear power. The arrangement proposes, among other things, a recovery area located amidship, an island located on the stern, and a bilevel hangar bay. Benefits of the new arrangement include improved operational efficiency, safety, and cost. The conceptual CV (CCV) would provide a more efficient airfield than exists on present carriers. Several factors contribute to this expected increased operational efficiency: improving the flow pattern of aircraft on the flight deck; increasing the rate of aircraft landings; enhancing administration of the flight deck; and permitting air operations in higher sea states. Because the proposed flight deck permits redesigning the hangar bay, the ships' aircraft capacity can be increased.
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August 1, 1976
This research contribution summarizes statistics on the losses, damage, loss rates, and hit rates of U.S. Navy, Marine Corps, and Air Force fixed-wing aircraft in Southeast Asia from 1962-1973. A chronology of the air war in Southeast Asia is also presented. Damage and Loss Data are included as appendix C in microfiche format.
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August 1, 1974
The Aircraft Force Projection Model (AFPM) is designed to project the Navy's aircraft inventory over a ten-year period and attempts to satisfy the operating requirements of a given set of forces with the projected operating inventory. In addition the AFPM generates useful characteristics of the aircraft inventory such as projections of the age distributions, attrition quantities, pipeline requirements, and rework requirements. This volume describes the input data file, file maintenance procedures, and how to run the model. The Aircraft Force Projection Model (AFPM) is documented in two volumes. Volume I, The Users Guide, describes the input data file, file maintenance procedures, and how to run the model. Volume II, The Programmers Guide, contains a detailed explanation of the AFPM computer programs and program listings.
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August 1, 1974
The Navy's Aeronautical Depot Maintenance Program, at an annual cost of over $600 million, includes the rework of aircraft, engines, and components performed at seven Naval Aircraft Rework Facilities, commercial sources, and the rework facilities of the other services. The User's Guide presents a complete description of the Workload Planning and Budgeting Model. This model produces detailed production plans and budgets for the entire Depot Maintenance Program. Using the method of linear programming, the model determines minimum cost workload assignments which satisfy all depot maintenance requirements.
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August 1, 1974
This research contribution addresses the problem of explicitly taking into account uncertainty about the demand for spare parts in making inventory procurement and stockage decisions. The model described provides for a unified treatment of the closely related problems of statistical estimation of demand and resource allocation within the inventory system, and leads to an easily implemented, efficient method of determining requirements for spare parts both in the early provisioning phase and in later periods of operations when demand data has accumulated.
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August 1, 1974
When a new aircraft, such as the F-14, is being bought, decisions on the quantities of spare parts to be bought are made even though information on expected demands, operating programs, and the final configuration of the aircraft is limited. For high-value, low-usage parts, which are those considered, the minimum-cost strategy might be to defer procurement until demands occur. During the period of deferral, the Navy would buy the needed spare parts from a stock carried by the manufacturer or from the production line if no stock is held. This paper describes an algorithm for determining in what cases this would be the best policy.
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June 1, 1974
The purpose of this analysis is to determine the relationship between the cost of the resource inputs employed by Naval aviation squadrons and the level of output produced by them. A production function, relating the level of squadron output to the levels of inputs used, is estimated econometrically, using nonlinear estimation techniques. The combination of inputs producing the maximum output, given a budget constraint, is then determined analytically.
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June 1, 1974
The demand for air travel between 581 pairs of domestic cities, which comprise 60 percent of total U.S. domestic air travel, is analyzed and forecast to the year 1980. An asessment of operating economies of new wide-body-aircraft and alternative trip times likely to be experienced by future air travelers is made to generate assumptions regarding the structure of future fares and trip times by distance. These assumptions are combined with income and population projections for each city and an estimated demand function to forecast levels of passenger travel between each pair of cities. Airline flights between these pairs of cities are projected under two patterns of service that may evolve with the further introduction of wide-body jets into commercial service. This research contribution is one of several documents produced in support of Project Blue Air: An Analysis of Navy Airspace Usage.
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