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Depot-Level Simulation And Multivariate Analysis On B-1 High Velocity Maintenance, Florence K. Yee
Depot-Level Simulation And Multivariate Analysis On B-1 High Velocity Maintenance, Florence K. Yee
Theses and Dissertations
The objective of this thesis is to gain insights on the B-1B depot maintenance operations, with a focus on direct maintenance hours or burn rate, under the implementation of High Velocity Maintenance (HVM). Based on historical depot maintenance data and the current B-1 depot HVM prototype data, a discrete-event simulation model is developed using Arena 12.0. Some United States Air Force supply chain influences, such as manning levels and kitting characteristics of the B-1 depot operations, are incorporated in our models as design factors. The model captures the stochastic nature of 30 HVM tasks performed on one B-1 aircraft in …
Characterization Of Graphite Composite Material Particulates From Usaf Aircraft Maintenance Operations, Richard E. Yon
Characterization Of Graphite Composite Material Particulates From Usaf Aircraft Maintenance Operations, Richard E. Yon
Theses and Dissertations
Due to the benefits of their material properties, advanced composite materials (ACM) are increasingly being used as structural components on aircraft, especially within the United States Air Force. As a result, the potential exists for occupational exposures to structural maintenance employees while repairing and fabricating aircraft components. Two field studies were conducted for this thesis in order to characterize ACM aerosol size distribution, determine the feasibility of utilizing direct reading instruments (DRIs) in the field, and ensure workers are protected with adequate controls. In order to characterize exposure, traditional integrated air sampling and DRIs were positioned together near an ACM …
Composite Aircraft Life Cycle Cost Estimating Model, Daniel B. Lambert
Composite Aircraft Life Cycle Cost Estimating Model, Daniel B. Lambert
Theses and Dissertations
Composite materials are beginning to comprise a greater percentage of structural materials used throughout aircraft production. The increased usage of composites has led individuals within the Air Force community to revisit aircraft life cycle cost, LCC, models. A series of affordability initiatives has culminated in significant evidence over the last decade to better quantify the impact of primarily composite structures in aircraft. The Advanced Composite Cargo Aircraft, ACCA, a research effort sponsored by the Air Force Research Lab, attempted to determine the impact of part size and large scale composite components on LCC for cargo aircraft. This research evaluates the …