Browsing Graduate Theses by Subject "Aeronautics and Astronautics."
Now showing items 1-20 of 1568
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1D scramjet model
(Massachusetts Institute of Technology, 2020)Renewed interest in hypersonic research has motivated a number of scientists to reinvestigate the efficacy and performance of supersonic combustion ramjets, colloquially known as "scramjets". In this thesis, a 1-D scramjet ... -
A 3-D tunnel correction panel method for swept tapered airfoils with separation
(Massachusetts Institute of Technology, 1988) -
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 ... -
Accelerated computational modeling of ballistic helmet test protocols
(Massachusetts Institute of Technology, 2017)In modern combat, helmets play a vital role in protecting the head. Before being delivered to the soldier, combat helmets undergo a series of tests to determine their threat mitigation performance. During ballistic testing, ... -
Accurate belief state update for probabilistic constraint automata
(Massachusetts Institute of Technology, 2005)As autonomous spacecraft and other robotic systems grow increasingly complex, there is a pressing need for capabilities that more accurately monitor and diagnose system state while maintaining reactivity. Mode estimation ... -
Achieving fault tolerance via robust partitioning and N-Modular Redundancy
(Massachusetts Institute of Technology, 2007)This thesis describes the design and performance results for the P-NMR fault tolerant avionics system architecture being developed at Draper Laboratory. The two key principles of the architecture are robust software ... -
Achieving real-time mode estimation through offline compilation
(Massachusetts Institute of Technology, 2003) -
Acoustic and thermal packaging of small gas turbines for portable power
(Massachusetts Institute of Technology, 2009)To meet the increasing demand for advanced portable power units, for example for use in personal electronics and robotics, a number of studies have focused on portable small gas turbines. This research is concerned with ... -
Acquisition and control of a precision formation flying mission
(Massachusetts Institute of Technology, 2010)Using formation flying spacecraft as space-based interferometers will provide images of unprecedented resolution. Missions such as Stellar Imager plan to use multiple spacecraft in a formation instead of a typical monolithic ... -
Acquisition strategies for commonality across complex aerospace systems-of-systems
(Massachusetts Institute of Technology, 2011)Commonality is a system architecting strategy widely used to improve affordability and reliability of families of products. However not all commonality is beneficial, and organizations must balance commonality benefits and ... -
Active control of centrifugal-compressor surge
(Massachusetts Institute of Technology, 1989) -
Active control of rotating stall in a three-stage axial compressor with jet actuators
(Massachusetts Institute of Technology, 1997) -
Active control of separation induced distortion in a scaled tactial aircraft inlet
(Massachusetts Institute of Technology, 2001) -
Active control of tiltrotor blade in-plane loads during maneuvers
(Massachusetts Institute of Technology, 1988) -
Active noise control using glow discharge plasma panels
(Massachusetts Institute of Technology, 2001) -
Active pitch control of an oscillating foil with biologically-inspired boundary layer feedback
(Massachusetts Institute of Technology, 2010)We present a high-fidelity numerical study of a two-dimensional °apping airfoil, ad- dressing the hypothesis that boundary layer feedback control can enable improved performance in flapping light. To this end, we model a ... -
Active policy querying for dynamic human-robot collaboration tasks
(Massachusetts Institute of Technology, 2021)Success in any group task is dependent upon mutual understanding between the collaborators. Team members can use observation to infer their partner's plans, but such an approach carries great uncertainty and requires passive ... -
Actively conformable aerodynamic surfaces
(Massachusetts Institute of Technology, 2002) -
Actuation efficiency and work flow in piezoelectrically driven linear and non-linear systems
(Massachusetts Institute of Technology, 2001) -
Adaptive control of hypersonic vehicles in presence of actuation uncertainties
(Massachusetts Institute of Technology, 2010)The thesis develops a new class of adaptive controllers that guarantee global stability in presence of actuation uncertainties. Actuation uncertainties culminate to linear plants with a partially known input matrix B. ...