Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Airworthiness"”.
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Tailoring an Airworthiness Document to Unmanned Aircraft Systems: A Case Study of MIL-HDBK-516C
… systems (UAS), there is a growing need to assess airworthiness for safe operations in shared airspace. In the context of this thesis, shared airspace implies the introduction of UAS into airspace designated for manned aircraft. Airworthiness guidelines are generally statements that state safety …
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Aircraft Maintenance Engineering : developing Aircraft Maintenance Programme using Reliability Centred Maintenance / MSG3 analysis and taking into consideration ETOPs and low utilisation
… yet it is fundamental on the continued airworthiness of an aircraft, it can be considered as the building block for maintaining the inherent reliability and airworthiness of the design. It is the author's experience that too many times operators have attempted to carry out the function …
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Design and Evaluation of Geometric Nonlinearities using Joined-Wing SensorCraft Flight Test Article
… structural flexibility and be designed to meet airworthiness standards. Previous work has demonstrated airworthiness through the successful flight of a Geometrically Scaled Remotely Piloted Vehicle. The work presented in this thesis involves evaluation of an aeroelastically tuned design through …
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Framework for Estimating Performance and Associated Uncertainty of Modified Aircraft Configurations
… the historical standard for determining aircraft airworthiness - however, increases in the cost of flight testing and the accuracy of inexpensive CFD promote certification by analysis to reduce or replace flight testing. A framework is introduced to predict the performance in the special case of a …
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Systems theoretic process analysis applied to Air Force acquisition technical requirements development
… lifecycle. STPA is also compliant with the airworthiness handbook, MIL-HDBK-516C, and STPA documentation is beneficial to the airworthiness certification inspectors. STPA is applied to two use cases. One is a conceptual JSTARS aircraft, and the other is an unmanned aerial vehicle (UAV) that …
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The Effect of Shift Turnover Strategy and Time Pressure on Aviation Maintenance Technician Performance
… and applied knowledge required to maintain airworthiness in aircraft. In commercial aviation, maintenance tasks are performed across multiple shifts. When AMTs share a maintenance task between shifts, the shift turnover strategy used may determine if information is effectively transferred …
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Mechanical and Electromagnetic Optimization of Structurally Embedded Waveguide Antennas
… aircraft calls for the development of an airworthiness certification procedure. The first step of this procedure is to provide a computationally low-cost method for modeling waveguide antenna arrays on the scale of an aircraft skin panel using a multi-fidelity model. Weather detection …
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A Novel Optical Fatigue Monitoring And Crack Sensing System
<p>Aircraft airworthiness management has dramatically extended the lifespan of an increasing number of aging fleets. In many other aerospace communities, the design and development of an integrated vehicle health management system has been their major focus of research, particularly in the area …
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Pilot’s Willingness to Operate in Unmanned Aircraft System Integrated Airspace
… safety of operations, aircraft certification and airworthiness, and operator experience and regulatory conformance. The most positive sentiment was observed among pilots presented with the hypothetical scenario of fully autonomous UAS operations in a segregated environment. Findings from the study …
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The Effects of Aircraft Certification Rules on General Aviation Accidents
… Engine Failure, and Structural Failure.</p> <p>Airworthiness certification categories represent a wide diversity of government oversight. Part 23 rules have evolved from the initial set of simpler design standards and have progressed into a comprehensive and strict set of rules to address the …
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Robust Control Design and Analysis for Small Fixed-Wing Unmanned Aircraft Systems Using Integral Quadratic Constraints
… practical application in UAS control design and airworthiness certification. IQC-based analysis problems are traditionally solved using convex optimization techniques, which can be slow and memory intensive for large problems. An oracle for discrete-time IQC analysis problems is presented to …
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Evaluation of the status of REACH in the aerospace sector and derivation of a model of implementation based on synergies with a Lean Green approach
… civil aviation regulations around the world for airworthiness and safety of aircrafts. <br/><br/>REACH regulation was first introduced in 2007 and since then the aerospace industry has been trying to adapt and develop systems to comply with this legislation. There are many examples of “Lean …
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Aeroelasticidad de una aeronave en presencia de nolinealidades estructurales concentradas
… Both technical publications and civil/military airworthiness regulations are reviewed, discussing the current methodologies and analyzing advantages and disadvantages of each one. The second part of the thesis studies the effect of concentrated structural nonlinearities (freeplay and hysteresis) …
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Ανάλυση της απόκρισης σύνθετων πολυμερών υλικών υπό συνθήκες φωτιάς. Εφαρμογή σε αεροπορικές κατασκευές
… and 10.5 for the aircraft configured to later airworthiness requirements. These figures are completely significant and give an extra confirmation that this work on investigating the fire response of composite aerostructures is on the right track. As the work of Cherry and Warren concluded, the …