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Modeling of particulate matter creation and evolution in aircraft engines, plumes and particle sampling systems
(Massachusetts Institute of Technology, 2005)
Environmental and health concerns have recently led to growing efforts to characterize the exhaust gas composition of aircraft engines. Besides major chemical species (N₂, 0₂, C0₂ and H₂0), aircraft engines also emit other ...
Boundary layer ingesting inlet design for a silent aircraft
(Massachusetts Institute of Technology, 2005)
(cont.) common nacelle, L/D ratios between 2.5 and 3.0, fan face to throat area ratios above 1.06, and offsets lower than 11%. Curvature ahead of the inlet should be avoided as well as bifurcations inside the duct. Inlet ...
A novel design methodology for enhanced compressor performance based on a dynamic stability metric
(Massachusetts Institute of Technology, 2005)
(cont.) compressor design optimization framework allows a versatile definition of the objective function such that any combination of pressure ratio, efficiency and dynamic stability can be prescribed at various operating ...
Dynamic and thermal control of an electromagnetic formation flight testbed
(Massachusetts Institute of Technology, 2005)
Formation flight of multiple spacecraft is an emerging method for completing complex space missions in an efficient manner. A limitation found in maintaining such formations is the need for precise control at all times. ...
Examination of planning under uncertainty algorithms for cooperative unmanned aerial vehicles
(Massachusetts Institute of Technology, 2005)
(cont.) of UAVs and targets. Additionally, sensitivity trials are used to capture each algorithm's robustness to real world planning environments where planners must negotiate incomplete or inaccurate system models. The ...
Framework for evaluating customer value and the feasibility of servicing architectures for on-orbit satellite servicing
(Massachusetts Institute of Technology, 2005)
The question that this thesis examines is whether traditional monolithic satellite designs have limited the value that the satellite market generates for the space industry. To answer this question, this thesis focuses on ...
Orbital rendezvous using an Augmented Lambert Guidance scheme
(Massachusetts Institute of Technology, 2005)
The development of an Augmented Lambert Guidance Algorithm that matches the position and velocity of an orbiting target spacecraft is presented in this thesis. The Augmented Lambert Guidance Algorithm manipulates the inputs ...
Design and operation of a counter-rotating aspirated compressor blowdown test facility
(Massachusetts Institute of Technology, 2005)
A unique counter-rotating aspirated compressor was tested in a blowdown facility at the Gas Turbine Laboratory at MIT. The facility expanded on experience from previous blowdown turbine and blowdown compressor experiments. ...
Collaborative UAV path planning with deceptive strategies
(Massachusetts Institute of Technology, 2005)
In this thesis, we propose a strategy for a team of Unmanned Aerial Vehicles (UAVs) to perform reconnaissance of an intended route while operating within aural and visual detection range of threat forces. The advent of ...
Graph-theoretical consideration in the design of complex engineering systems for robustness and scalability
(Massachusetts Institute of Technology, 2005)
(cont.) and (2) a forward approach which achieves optimality at the start and grows the system using an optimization technique. We systematically compare the two staging techniques in the context of telescope arrays and ...