In this paper we propose a comprehensive systems engineering modeling framework for the development of safety critical avionics components. The framework which complies with commercial regulatory and airworthiness obj...
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This work examines the evolution of the Flight Operations Center (FOC) and flight trajectory exchange tools within the framework of Trajectory-Based Operations (TBO), emphasizing the benefits of the ICAO's Flight ...
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ISBN:
(纸本)9798331534738
This work examines the evolution of the Flight Operations Center (FOC) and flight trajectory exchange tools within the framework of Trajectory-Based Operations (TBO), emphasizing the benefits of the ICAO's Flight and Flow Information for a Collaborative Environment (FF-ICE) messaging framework and the use of Electronic Flight Bags (EFBs). It highlights the collaborative generation and management of four-dimensional flight trajectories, which serve as a common reference for decision-making among stakeholders, including Air Navigation Service Providers (ANSPs), airspace users and airport operators. Key enabling technologies such as Performance Based Navigation (PBN), data communications, and System-wide Information Management (SWIM) are discussed, illustrating their roles in facilitating rapid information exchange and trajectory optimization. A live flight case study is presented, successfully demonstrating TBO concepts through international collaboration, and pointing to significant improvements in safety, efficiency, and sustainability. The paper presents key technical results achieved through TBO prototype implementations, including enhanced trajectory accuracy, improved flight path efficiency, and the ability to accommodate real-time adjustments based on evolving conditions. The integration of advanced trajectory optimization engines and automation capabilities within the FOC has led to more effective flight planning and execution, enabling airlines to negotiate trajectory changes dynamically, adapting to changing circumstances and optimizing operations throughout the flight lifecycle. The findings indicate that TBO can significantly enhance operational predictability, flexibility, and strategic planning while reducing uncertainty and improving alignment between strategic and tactical actions. The main conclusions are: that TBO is already possible with most of the currently flying commercial aircraft;the full implementation of TBO is a feasible way of achieving a
Airport surface operations are a safety-critical component of the transportation industry. Although airports are nominally centrally deconflicted by an air traffic controller, stochastic pilot behavior and planning er...
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Multi-label classification is a supervised Machine Learning problem, which can assign zero or more mutually non-exclusive class labels for an instance. It is different from the multi-class classification which assigns...
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As the aerospace sector aims to decrease its greenhouse gas emissions from historical levels, vehicle lightweighting is seen as key to achieving meaningful reductions in the sector. Shape memory alloy (SMA) materials ...
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Prolonged and repetitive stress on muscles, tendons, ligaments, and nerves can have long-term adverse effects on the human body. This can be exasperated while working if the environment and nature of the tasks puts si...
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This study explores the instabilities within a laminar separated shear-layer on a 5-degree slender cone with an axial slice and 20-degree ramp located aft. Experiments were conducted in the T5 Free-Piston Reflected Sh...
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Composite structures offer increased strength and stiffness while reducing mass compared to aerospace metals. boeing has studied how to incorporate composite structures into habitats for human spaceflight. Certificati...
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ISBN:
(纸本)9798331312107
Composite structures offer increased strength and stiffness while reducing mass compared to aerospace metals. boeing has studied how to incorporate composite structures into habitats for human spaceflight. Certification of a composite habitat for deep space applications has not yet been undertaken. This paper lays the groundwork for certification and achieving it in the near term. Habitat mass is crucial for mission efficiency as human exploration moves further from Earth. Composite primary structures have shown significant mass savings of 34% over metallic configurations. However, there are technical and safety hurdles to overcome for incorporating composites into crewed habitation modules for long-duration deep space missions. Certification entails establishing requirements and demonstrating compliance. The aviation industry has developed certification processes for composite aircraft structures. The Federal Aviation Administration (FAA) provides regulations and guidance, and other resources offer further guidance for aircraft certification. The certification framework for a deep space habitat structure follows similar principles. Certification involves every element of the product development process. Preliminary design selects materials and ensures part geometries enable verification. Material and manufacturing process controls are established to ensure repeatability. Damage threats are assessed, including impacts and environmental factors. Safety margins must be demonstrated for all potential defects. The path to certification includes manufacturing scale-up, analysis methodology demonstration, and full-scale validation testing. Durability and damage tolerance are key considerations, including the assessment of threats like micro-meteoroids and orbital debris. Radiation and space environment threats are also addressed. boeing has completed the preliminary design of a composite habitat, showing potential mass savings of over 30%. Toray's T1100G/3960 slit tape pr
In modern aircraft, the design of lightning damage tolerant composite structure is an area of continued interest. In this work, a filled hole compression (FHC) experimental data set was created to demonstrate the impa...
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State of the art commercial aerospace stringer-stiffened skins use 3 styles of toughened carbon/epoxy prepreg material forms: unidirectional tape, plain weave, and a biased plain weave. Despite manufacturing improveme...
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