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Articles 1 - 8 of 8
Full-Text Articles in Aerospace Engineering
Formation Flight For Fuel Saving In Coronet Missions Of Kc-135r And F-15c/E, Christopher Allen Kniffin
Formation Flight For Fuel Saving In Coronet Missions Of Kc-135r And F-15c/E, Christopher Allen Kniffin
Mechanical and Aerospace Engineering Theses
The fuel saving benefit of formation flight has been demonstrated through theoretical and computational analyses, simulation, wind tunnel and flight tests. When an aircraft flies in a specific region in the wake of another aircraft, it experiences upwash, which results in reduced drag and thus reduced thrust requirement. One specific USAF mission that can potentially benefit from formation flight is coronet missions. In a coronet mission, fighter aircraft are escorted and refueled, as needed, by tanker aircraft over a long range. During the flight, the receiver aircraft fly in formation with the tanker but outside of the wake of the …
Optimizing The Telescope Assembly Alignment Simulator For Sofia, Zoe E. Sharp, Alex Quyenvo, Jennifer Briggs, Brian Eney
Optimizing The Telescope Assembly Alignment Simulator For Sofia, Zoe E. Sharp, Alex Quyenvo, Jennifer Briggs, Brian Eney
STAR Program Research Presentations
The Stratospheric Observatory for Infrared Astronomy (SOFIA) conducts research on a modified Boeing 747sp aircraft. By using a variety of infrared science instruments mounted on a 2.7 meter telescope, researchers can make discoveries about the galactic center, star formation, and various topics associated with a deeper understanding of our universe. To efficiently collect data through the SOFIA instruments, the instruments must be tested and prepared prior to being placed on the aircraft. Therefore, with the use of the Telescope Assembly Alignment Simulator (TAAS), researchers can design and construct improvements needed for these instruments to efficiently perform while in flight. The …
Metamodels Of Residual Stress Buildup For Machining Process Modeling, Stuart B. Mccrorie, Michael Sangid
Metamodels Of Residual Stress Buildup For Machining Process Modeling, Stuart B. Mccrorie, Michael Sangid
The Summer Undergraduate Research Fellowship (SURF) Symposium
In the process of machining materials, stresses, called residual stresses, accumulate in the workpiece being machined that remain after the process is completed. These residual stresses can affect the properties of the material or cause part distortion, and it is important that they be calculated to prevent complications from arising due to the residual stresses. However, these calculations can be incredibly computationally intensive, and thus other methods are needed to predict the residual stresses in materials for quick decision-making during machining. By using metamodels - a method of representing data where few data points exist - we can achieve an …
Investigation Of Exothermic Reaction Dynamics Via Computational Fluid Dynamics Coupled With A Feedback Controller, Siusan Choi
Investigation Of Exothermic Reaction Dynamics Via Computational Fluid Dynamics Coupled With A Feedback Controller, Siusan Choi
Mechanical and Aerospace Engineering Dissertations
The control of reaction temperature under continuous flow conditions is important in a variety of chemical manufacturing industries. For many reactions, operating at off-design temperatures can result in the production of undesired products, reduced feedstock conversion and, in some cases, reduced catalyst lifetime. In many exothermic reactions, maintaining a desired set point temperature at high reactant flow rates becomes challenging if the chemical kinetics exhibit highly non-linear behavior. In these situations, the interaction between commonly used linear controllers and the physical system can lead to unexpected dynamic response and undesired swings in reaction temperature. In this research, a computational model …
Sysml Based Cubesat Model Design And Integration With The Horizon Simulation Framework, Shaun Luther
Sysml Based Cubesat Model Design And Integration With The Horizon Simulation Framework, Shaun Luther
Master's Theses
This thesis examines the feasibility of substituting the system input script of Cal Poly’s Horizon Simulation Framework (HSF) with a Model Based Systems Engineering (MBSE) model designed with the Systems Modeling Language (SysML). A concurrent student project, SysML Output Interface Creation for the Horizon Simulation Framework, focused on design of the HSF Translator Plugin which converts SysML models to an HSF specific XML format. A SysML model of the HSF test case, Aeolus, was designed. The original Aeolus HSF input script and the translated SysML input script retained the format and dependency structure required by HSF. Both input scripts …
Computational Analysis Of Impact Loading On Wafer Level Chip Scale Packages Mounted On Printed Circuit Boards Of Varying Thickness, Anik Mahmood
Mechanical and Aerospace Engineering Theses
In the electronic industry one of the popular package is Chip Scale Package (CSP) due to its small form factor and low cost. To meet the need of new functionality and portability of the recent devices, CSPs’ have been most favorable choice for a long time. On the other hand, with the miniaturization process of these portable devices there is a growing risk of drop impact failure in day to day use. It’s not only the mechanical loading that is affecting the reliability of these devices but also thermal and thermo-mechanical loads are acting simultaneously. To analyze and ensure the …
Design & Analysis Of A Computer Experiment For An Aerospace Conformance Simulation Study, Ryan W. Gryder
Design & Analysis Of A Computer Experiment For An Aerospace Conformance Simulation Study, Ryan W. Gryder
Theses and Dissertations
Within NASA's Air Traffic Management Technology Demonstration # 1 (ATD-1), Interval Management (IM) is a flight deck tool that enables pilots to achieve or maintain a precise in-trail spacing behind a target aircraft. Previous research has shown that violations of aircraft spacing requirements can occur between an IM aircraft and its surrounding non-IM aircraft when it is following a target on a separate route. This research focused on the experimental design and analysis of a deterministic computer simulation which models our airspace configuration of interest. Using an original space-filling design and Gaussian process modeling, we found that aircraft delay assignments …
Team Training In Safety And Security Via Simulation: A Practical Dimension Of Maritime Education And Training, Michael Baldauf, Dimitrios Dalaklis, Aditi Kataria
Team Training In Safety And Security Via Simulation: A Practical Dimension Of Maritime Education And Training, Michael Baldauf, Dimitrios Dalaklis, Aditi Kataria
Conference Papers
In the rather extended maritime domain, a term that should be the epicentre of any successful careerbuilding path is tailor-made training via cutting-edge simulators. To cut a long story short, the breadth of operations on the various types of ships has expanded to such a large extent that extensive practical training drills are becoming a compelling need to contribute to competent seafarers. This type of training can guarantee the positive outcome in their decision-making process and help the seafarers often being under continuous pressure, to suitably respond to the various safety and security threats on-board a vessel. The several conventions …