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Continuous relaxation to over-constrained temporal plans
(Massachusetts Institute of Technology, 2013)
When humans fail to understand the capabilities of an autonomous system or its environmental limitations, they can jeopardize their objectives and the system by asking for unrealistic goals. The objective of this thesis ...
Modernizing systems engineering : cognitive systems and model-based approaches for spacecraft architecture development
(Massachusetts Institute of Technology, 2014)
Systems engineering exists as a discipline to enable organizations to control and manage the development of complex hardware and software. These methods are particularly essential in the development of space systems, which ...
Probabilistic aspects of progressive damage in composite structures
(Massachusetts Institute of Technology, 2011)
The effects and importance of incorporating probabilistic aspects of the progression of damage in the analysis of composite structures are assessed. Two specific cases of graphite/epoxy with centrally-located holes are ...
Transmission scheduling of periodic real-time traffic in wireless networks
(Massachusetts Institute of Technology, 2016)
An increasing number of applications rely on wireless networks for distributing information. Communicating time-sensitive data such as position, video, voice and telemetry, can be particularly challenging in wireless ...
Vehicle health monitoring using stochastic constraint suspension
(Massachusetts Institute of Technology, 2012)
Autonomous vehicle health monitoring (VHM) has been identified as a high priority technology for future space exploration in NASA's 2012 technology roadmap. Traditional VHM approaches are often designed for a specific ...
Reduced order modelling of streamers and their characterization by macroscopic parameters
(Massachusetts Institute of Technology, 2019)
Electric discharges in gases occur at various scales, and are of both academic and practical interest for several reasons including understanding natural phenomena such as lightning, and for use in industrial applications. ...
Aircraft charging using ion emission for lightning strike mitigation : an experimental study
(Massachusetts Institute of Technology, 2019)
Lighting strikes are a problem for aircraft flying in large external electric fields. In most cases, the strike is triggered by the aircraft; as it flies through an electric field, it becomes polarized, and on areas with ...
Robust non-Gaussian semantic simultaneous localization and mapping
(Massachusetts Institute of Technology, 2019)
The recent success of object detection systems motivates object-based representations for robot navigation; i.e. semantic simultaneous localization and mapping (SLAM), in which we aim to jointly estimate the pose of the ...
Commanding small satellites for simulated spacecraft inspections using augmented reality
(Massachusetts Institute of Technology, 2019)
Free-flying teleoperated satellites have been proposed as a replacement for astronaut extravehicular activities (EVA), such as inspection or maintenance, to reduce astronaut risk. A major concern for this type of operation ...
Testing new potential fuels for ion electrospray propulsion systems
(Massachusetts Institute of Technology, 2018)
Electrospray thrusters are a class of electric propulsion that extract and accelerate ions from the surface of an electrically conductive liquid surface. This liquid surface is that of an ionic liquid, a room temperature ...