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 20 of 24 for “"supersonic aircraft"”.
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Sonic boom considerations in preliminary design of supersonic aircraft
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
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Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs
… spars and ribs, termed SpaRibs, to design supersonic aircraft wing-box in comparison to the use of classic design concepts that employ straight spars and ribs. The intent is to achieve a more efficient load-bearing mechanism and to passively control aeorelastic behavior of the structure …
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Innovative Design Methodology with LTO Noise Prediction Capabilities for Future Supersonic Aircraft
L'abstract è presente nell'allegato / the abstract is in the attachment
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Noise Reduction in an Axisymmetric Supersonic Aircraft Inlet using Trailing Edge Blowing
… anechoic chamber with a 1/14th scale model of a supersonic aircraft engine inlet using Trailing Edge Blowing (TEB) to reduce the engine fan noise from a turbofan propulsion simulator (TPS). The TPS is 4.1 in. (10.4 cm) in diameter and is powered by compressed air. The supersonic inlet is …
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Design-to-Noise Methodologies for Future Supersonic Aircraft: Experimental, Numerical, and Analytical Approaches
L'abstract è presente nell'allegato / the abstract is in the attachment
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Verification and Validation of Open-Source Simulation Tools for Supersonic Aircraft Aerodynamic Analysis
… for several flow problems relevant to the supersonic aerodynamics of small-scale, autonomous aircraft concepts. Vehicle concepts used as research platforms to test new aerospace technologies, such as advanced propulsion systems or large sensor payloads, require major modifications to …
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Wind tunnel testing of a nacelle bypass concept for a quiet supersonic aircraft
… considerable design challenge to enable civilian aircraft to operate at supersonic flight conditions. One technology proposed by Gulfstream Aerospace Corporation for the production of low-noise supersonic aircraft is the high-flow nacelle bypass concept in which an outer nacelle surface is used to …
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On potential effects from the aviation and refrigeration sectors on ozone and climate
… the possibility of commercial and business supersonic aircraft that fly in the lower stratosphere is being discussed and specific designs are under consideration. The impact on stratospheric ozone from potential fleets of supersonic aircraft have raised concerns and is of interest for …
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Global Demand Model to Estimate Supersonic Commercial Services
Not too long ago, commercial supersonic aircraft flights were part of the air transportation system. In the 1970's we had the Russian-built Tupolev Tu-144 and the BAC/Aerospatiale Concorde, the latest being tin operation for 27 years. The work documented in this dissertation focused on the …
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Air Transportation Modeling to Evaluate Airport Runway Infrastructure and Supersonic Transport Demand
… the prediction of worldwide demand for future supersonic aircraft. Both topics aim to improve air transportation mobility, which benefits society and contributes to economic growth. The Federal Aviation Administration (FAA) Advisory Circular (AC) 150/5325-4B contains the current method of …
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Nonlinear Acoustics and an Inverse Scattering Problem
… model the behaviour of the sonic booms formed by supersonic aircraft in the atmosphere to see what environmental impact they would have on people and animals on the ground, in terms of the form of the sound waves once they reach the ground. The work on landmine detection originated from a …
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Development of an Interactive Wave Drag Capability for the OpenVSP Parametric Geometry Tool
… to successful and efficient transonic and supersonic flight. Area-ruling is the process of managing the cross-sectional area of an aircraft to lessen the wave drag experienced in flight. Effectively calculating the necessary areas for a given aircraft can be difficult, and existing tools …
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On the Application of an Output-based Adaptive, Higher-order Finite Element Method to Sonic Boom Propagation
… limits is a crucial factor for the viability of supersonic aircraft. This thesis presents a computational framework for simulating sonic boom propagation using an output-based adaptive, higher-order finite element method. The research employs the Variational Multiscale with Discontinuous …
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Spatiotemporally-Resolved Velocimetry for the Study of Large-Scale Turbulence in Supersonic Jets
The noise emitted from tactical supersonic aircraft presents a dangerous risk of noise-induced hearing loss for personnel who work near these jets. Although jet noise has many interacting features, large-scale turbulent structures are believed to dominate the noise produced by heated supersonic …
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Optimal control problems with switching points
… pressure limit, and range maximization for a supersonic aircraft flying in the vertical plane, also in presence of a dynamic pressure limit. In the second problem singular control appears along arcs with active dynamic pressure limit, which, in the context of optimal control, represents a …
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Low-Speed Flight Testing and System Identification of a Small-Scale Supersonic Uncrewed Aerial Vehicle
… Multipurpose Uncrewed Fixed-wing Advanced Supersonic Aircraft (MUFASA) program intends to advance open knowledge of small-scale supersonic uncrewed aerial vehicle (SSUAV) aerodynamics using novel, air-breathing propulsion. Continued MUFASA development relies on a lightweight, downsized …
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Exploring fast package delivery from a systems perspective
… development with reusable launch vehicle and supersonic transportation technologies. However, a systems analysis of Fast Package Delivery has determined this market to be a difficult arena to enter. FPD has two modes of service. On one end is a mode for which the high transportation unit costs …
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Constraining climate impact uncertainties from future aviation
… technologies such as unmanned aerial vehicles, supersonic aviation, or hydrogen and alternative fuels. These factors together require a persistent effort to improve the available tools assessing aviation environmental footprint. The objective of this thesis is to provide additional insights into …
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Shape Optimization of Supersonic Bodies to Reduce Sonic Boom Signature
… of interest by aerospace industry and NASA in supersonic transport aircraft. In recent studies, the emphasis has been on shape optimization of supersonic plane to reduce the acoustic signature of sonic boom resulting from the supersonic aircraft at high altitude in cruise flight. Because of the …
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Dynamic Modeling of a Supersonic Tailless Aircraft with All-moving Wingtip Control Effectors
A six degree-of-freedom model for a tailless supersonic aircraft (TSA) concept was developed using MATLAB and Simulink. Aerodynamic data was provided through the computational fluid dynamics analysis of Techsburg, Inc. A three degree-of-freedom model of the configuration's longitudinal dynamics was …
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