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Autonomous thruster failure recovery for underactuated spacecraft
(Massachusetts Institute of Technology, 2010)
Thruster failures historically account for a large percentage of failures that have occurred on orbit. Therefore, autonomous thruster failure detection, isolation, and recovery (FDIR) is an essential component to any robust ...
Assessing the impacts of fractionation on pointing-intensive spacecraft
(Massachusetts Institute of Technology, 2010)
Fractionated spacecraft consist of physically independent, "free-flying" modules composed of various subsystems. Thus, a fractionated spacecraft might consist of one-module responsible for the power generation and storage, ...
An adaptive control technology for flight safety in the presence of actuator anomalies and damage
(Massachusetts Institute of Technology, 2010)
The challenge of achieving safe flight comes into sharp focus in the face of adverse conditions caused by faults, damage, or upsets. When these situations occur, the corresponding uncertainties directly affect the safe ...
Assessment of propfan propulsion systems for reduced environmental impact
(Massachusetts Institute of Technology, 2010)
Current aircraft engine designs tend towards higher bypass ratio, low-speed fan designs for improved fuel burn, reduced emissions and noise. Alternative propulsion concepts include counter-rotating propfans (CRPs) which ...
Accelerated Bayesian experimental design for chemical kinetic models
(Massachusetts Institute of Technology, 2010)
The optimal selection of experimental conditions is essential in maximizing the value of data for inference and prediction, particularly in situations where experiments are time-consuming and expensive to conduct. A general ...
Space exploration challenges : characterization and enhancement of space suit mobility and planetary protection policy analysis
(Massachusetts Institute of Technology, 2010)
This thesis addresses two challenges associated with advanced space and planetary exploration: characterizing and improving the mobility of current and future gas pressurized space suits; and developing effective domestic ...
Development of an income-based hedonic monetization model for the assessment of aviation-related noise impacts
(Massachusetts Institute of Technology, 2010)
Aviation is an industry that has seen tremendous growth in the last several decades. With demand for aviation projected to rise at an annual rate of 5% over the next 20 to 25 years, it is important to consider technological, ...
An integrated traverse planner and analysis tool for future lunar surface exploration
(Massachusetts Institute of Technology, 2010)
This thesis discusses the Surface Exploration Traverse Analysis and Navigation Tool (SEXTANT), a system designed to help maximize productivity, scientific return, and safety on future lunar and planetary explorations,. The ...
An assessment of environmental impacts of a nextGen implementation scenario and its implications on policy-making
(Massachusetts Institute of Technology, 2010)
With demand for aviation projected to grow by 5% per year over the next 20 to 25 years, policy makers must not only consider ways to ensure that the air transportation system can accomodate significant growth, but also how ...
Development of a helmet liner for protection against blast induced trauma
(Massachusetts Institute of Technology, 2010)
Traumatic brain injuries caused by shock waves have attracted increased medical and scientific attention due to the large percentage of combat troops that have sustained such injuries in recent conflict theatres. To this ...