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A decomposition-based approach to uncertainty quantification of multicomponent systems
(Massachusetts Institute of Technology, 2015)
To support effective decision making, engineers should comprehend and manage various uncertainties throughout the design process. In today's modern systems, quantifying uncertainty can become cumbersome and computationally ...
Fluid mechanics of ported shroud centrifugal compressor for vehicular turbocharger applications
(Massachusetts Institute of Technology, 2015)
This thesis presents an investigation of the effects of Ported Shroud (PS) self-recirculating casing treatment used in turbocharger centrifugal compressors for increasing the operable range. Computed results, assessed with ...
Sampling-based motion planning algorithms for dynamical systems
(Massachusetts Institute of Technology, 2015)
Dynamical systems bring further challenges to the problem of motion planning, by additionally complicating the computation of collision-free paths with collision-free dynamic motions. This dissertation proposes efficient ...
Networked control of aircraft operations at airports and in terminal areas
(Massachusetts Institute of Technology, 2013)
The goal of this thesis is to develop a control strategy for airport operations that integrates the management of arrivals and departures. The strategy is based on four central ideas: (1) the objective of reducing aircraft ...
Computational modeling of size-dependent superelasticity in shape memory alloys
(Massachusetts Institute of Technology, 2013)
The superelastic effect in shape memory alloys (SMAs) is attributed to the stress-induced reversible austenitic-martensitic phase transformations. It is characterized by the development of significant strains which are ...
Evaluation of multi-vehicle architectures for the exploration of planetary bodies in the Solar System
(Massachusetts Institute of Technology, 2014)
Planetary exploration missions are becoming increasingly complex and expensive due to ever more ambitious scientific and technical goals. On the other hand, budgets in planetary science have suffered from dramatic cuts ...
Experiments and a model of pilot system failure detection during simulated Lunar landing
(Massachusetts Institute of Technology, 2014)
Future complex systems, such as those found in piloted aircraft and spacecraft, will undoubtedly utilize significant automation to enhance pilot capabilities and enable novel mission scenarios. Off-nominal conditions may ...
Development of a high-precision ADS-B based conflict alerting system for operations in the airport environment
(Massachusetts Institute of Technology, 2014)
The introduction of Automatic Dependent Surveillance - Broadcast (ADS-B) as the future source of aircraft surveillance worldwide provides an opportunity to introduce high-precision airborne conflict alerting systems for ...
Airport surface traffic optimization and simulation in the presence of uncertainties
(Massachusetts Institute of Technology, 2014)
Surface traffic congestion causes significant taxi delays and long queues for takeoffs at busy airports, increasing operational and environmental costs. These impacts may be mitigated by optimizing runway and taxiway ...
Reducing the air quality impacts of aircraft activity at airports
(Massachusetts Institute of Technology, 2016)
Air transportation is an integral part of the economy and the transportation infrastructure. However, aircraft activity at airports generates CO2 emissions that affect the climate and other pollutants that affect air quality ...