Browsing Aeronautics and Astronautics - Master's degree by Title
Now showing items 1248-1267 of 2145
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Large-scale simulation of the mechanical response of porcine cranial bone
(Massachusetts Institute of Technology, 2017)Biofidelic computer models are an invaluable tool in the understanding injury biomechanics. One crucial feature of these models is the ability to accurately capture the response of the individual tissues comprising the ... -
Laser beacon tracking for free-space optical communication on small-satellite platforms in low-earth orbit
(Massachusetts Institute of Technology, 2015)Free-space optical (FSO) communication, or laser communication, is capable of providing high-rate communication links, meeting the growing downlink demand of space missions, including those on small-satellite platforms. ... -
Lateral control system design for VTOL landing on a DD963 in high sea states
(Massachusetts Institute of Technology, 1982) -
Lateral vibration of thin beam under vertical excitation.
(Massachusetts Institute of Technology, 1970) -
Lean Transformations in Supply Chain, the autocatalytic nature of lean principles, and tactics for implementing lean tools
(Massachusetts Institute of Technology, 2008)Expanding Lean principles beyond the manufacturing floor, ultimately to entail a comprehensive Lean Enterprise, has gained increasing attention among corporations. This thesis entails a detailed case study of initiating a ... -
Learning control applied to a model helicopter
(Massachusetts Institute of Technology, 1994) -
Learning control for a class of discrete-time, nonlinear systems
(Massachusetts Institute of Technology, 1999)Over the last few decades, control theory has developed to the level where reliable methods exist to achieve satisfactory performance on even the largest and most complex of dynamical systems. The application of these ... -
A learning enhanced flight control system for high performance aircraft
(Massachusetts Institute of Technology, 1992) -
Learning Gaussisan noise models from high-dimensional sensor data with deep neural networks
(Massachusetts Institute of Technology, 2018)While measurement covariances are often taken to be constant in many robotic state estimation systems, many sensors exhibit different interactions with their environment. Accurate covariance estimation allows graph-based ... -
A learning method for the approximation of discontinuous functions for stochastic simulations
(Massachusetts Institute of Technology, 2012)Surrogate models for computational simulations are inexpensive input-output approximations that allow expensive analyses, such as the forward propagation of uncertainty and Bayesian statistical inference, to be performed ... -
Learning to route efficiently with end-to-end feedback : the value of (identifiable) networked structure
(Massachusetts Institute of Technology, 2018)In this thesis, we introduce efficient algorithms which achieve nearly optimal instance-dependent and worst case regrets for the problem of stochastic online shortest path routing with end-to-end feedback. The setting is ... -
Least Squares Shadowing for sensitivity analysis of chaotic dynamical systems
(Massachusetts Institute of Technology, 2016)In numerous scientific and engineering fields, sensitivity analysis tools are essential for design optimization as well as uncertainty quantification. For instance, adjoint algorithms are common place in aerospace engineering ... -
Leg-based heuristic methods to network seat inventory control
(Massachusetts Institute of Technology, 1994) -
A Legendre Pseudospectral Method for rapid optimization of launch vehicle trajectories
(Massachusetts Institute of Technology, 2001)A Legendre Pseudospectral Method for launch vehicle trajectory optimization, pro posed by Mike Ross and Fariba Fahroo of the Naval Postgraduate School, is presented and applied successfully to several launch problems. The ... -
Life cycle assessment of greenhouse gas emissions and non-CO₂ combustion effects from alternative jet fuels
(Massachusetts Institute of Technology, 2010)The long-term viability and success of a transportation fuel depends on both economic and environmental sustainability. This thesis focuses specifically on assessing the life cycle greenhouse gas (GHG) emissions and non-CO ... -
Lifecycle perspectives on product data management
(Massachusetts Institute of Technology, 2005)Implementing a new IT system often requires the enterprise to transform in order to maximally leverage the capabilities generated by the new system. The challenge in using IT as an enabler to change arises from the need ... -
Limiting vibration in systems with constant amplitude actuators through command preshaping
(Massachusetts Institute of Technology, 1994) -
Linear 1-D analysis of oscillation instabilities in stationary plasma thrusters
(Massachusetts Institute of Technology, 1999)A one-dimensional, linear perturbation model was formulated to aid in the analysis of the low-frequency (33 kHz), axial oscillation instabilities observed during the operation of Stationary Plasma Thrusters. The first six ... -
Linear covariance analysis trade study of autonomous navigation schemes for cislunar missions
(Massachusetts Institute of Technology, 2007)Deep space missions to the Moon and Mars under NASA's Constellation Program are a tangible goal. However, the Deep Space Network (DSN) antennas which provided ground based navigation state updates to spacecraft of the ... -
A linear parameter varying control methodology for reduction of helicopter higher harmonic vibration
(Massachusetts Institute of Technology, 2016)Vibration in helicopters can have a significant impact on their utility, maintenance, weight, performance, and cost of operation. This thesis focuses on the design of a vibration reduction controller that is effective ...
