Browsing RPI Theses Online (Complete) by Subject "Aeronautical engineering"
Now showing items 1-20 of 115
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3-D interactions between a finite-span synthetic jet and a cross-flow
(Rensselaer Polytechnic Institute, Troy, NY, 2011-08) -
A matrix-free algorithm for reduced-space PDE-constrained optimization
(Rensselaer Polytechnic Institute, Troy, NY, 2018-05)This thesis present a matrix-free method for partial differential equation (PDE) constrained optimization problems formulated in the reduced space. When many state-based constraints are present in the reduced-space ... -
A mesh resolution study for large eddy simulation of flow interactions of a finite-span synthetic jet on an airfoil
(Rensselaer Polytechnic Institute, Troy, NY, 2018-12)The primary objective of this study is to investigate the effect of mesh resolution on the accuracy of large eddy simulation (LES) based prediction of complex flow interactions that arise between a finite-span synthetic ... -
A mid-infrared laser absorption sensor for carbon monoxide and temperature measurements
(Rensselaer Polytechnic Institute, Troy, NY, 2010-05) -
A modular matrix-free approach to multidisciplinary design optimization
(Rensselaer Polytechnic Institute, Troy, NY, 2017-12)In this thesis, we propose a reduced-space inexact-Newton-Krylov (RSNK) algorithm that can address the challenges posed by the IDF formulation. RSNK achieves this with three key components: a matrix-free formulation that ... -
A multi-scale approach for modeling of the atmospheric turbulent boundary layer subject to stratification
(Rensselaer Polytechnic Institute, Troy, NY, 2011-08) -
A qualitative investigation of core losses in metals with approaching fatigue failure
(Rensselaer Polytechnic Institute, Troy, NY, 1945-04)This thesis represents the results of tests on several 1-1/8" x 1/8" x 14-5/8" cold rolled steel specimens in both an "as rolled" and fully annealed condition undergoing reversed bending stresses at the rate of 120 cycles ... -
A study of the flow physics on a swept wing and the application of steady blowing to separation control
(Rensselaer Polytechnic Institute, Troy, NY, 2022-08)An experimental study was conducted to understand the effect of steady blowing from segmented jets along the leading edge of a 30° swept wing with an aspect ratio of approximately 4, with a twist of approximately −2.5° ... -
A universal prediction of stall onset for airfoils at a wide range of Reynolds number flows
(Rensselaer Polytechnic Institute, Troy, NY, 2009-05) -
Active flow control integrated diffuser (AFCID) for increased energy efficiency in variable air volume systems
(Rensselaer Polytechnic Institute, Troy, NY, 2013-12)Variable air volume (VAV) air terminals are designed to save energy by reducing airflow into a given space based on occupancy and required load. Systems are typically designed to operate at peak load, however as load is ... -
Adaptive cellular structures and devices with internal features for enhanced structural performance
(Rensselaer Polytechnic Institute, Troy, NY, 2014-12)A drawback of the pin-jointed cell with PAM inclusions is that it is inherently underconstrained. To solve this problem, the pin-jointed cell walls are replaced with a continuous Delrin hexagon which gives the cell kinematic ... -
Adaptive construction of locally anisotropic spectral discretization for stochastic PDEs
(Rensselaer Polytechnic Institute, Troy, NY, 2018-05)Many stochastic problems are anisotropic in nature in that at certain spatial locations the solution may depend only on a couple of random variables and have negligible dependence on others. This anisotropic nature of ... -
Adaptive Lyapunov control and artificial neural networks for spacecraft relative maneuvering using atmospheric differential drag
(Rensselaer Polytechnic Institute, Troy, NY, 2013-12)In this work atmospheric differential drag based nonlinear controllers are presented that can be used for virtually any planar relative maneuver of two spacecraft, provided that there is enough atmospheric density and that ... -
Advances in computational fluid dynamics with discrete entropy properties : stability, unstructured grids, and adaptivity
(Rensselaer Polytechnic Institute, Troy, NY, 2019-12)The main theme of this work is the development and application of entropy-stable discretizations. These discretizations inherit a nonlinear stability property from the continuous equations and they show great promise toward ... -
Aerodynamic performance modification of the Stingray UAV at low angles of attack
(Rensselaer Polytechnic Institute, Troy, NY, 2007-12) -
Aerodynamic shape optimization of unsteady, chaotic flows
(Rensselaer Polytechnic Institute, Troy, NY, 2019-08)First, a novel ensemble Newton-Krylov method is presented, which successfully improves upon a chosen objective function for the chaotic Lorenz '63 system. Next, inspired by the accurate yet costly least-squares shadowing ... -
All-electronic THz-wave gas sensing via absorption spectroscopy
(Rensselaer Polytechnic Institute, Troy, NY, 2022-05)Gas sensing via THz-wave absorption spectroscopy is developed for the detection of severalvolatile organic compounds, halogenated hydrocarbons, and nitrogen-containing compounds using a broadband electronics-based THz wave ... -
An evaluation of the use of a dynamic wake theory for edgewise rotors at high advance ratios
(Rensselaer Polytechnic Institute, Troy, NY, 2015-08)Dynamic wake theories are widely used in rotorcraft simulation codes and continue to be a valuable resource even though computationally heavy methods, such as vortex lattice methods and CFD, have become more accessible. ... -
An experimental investigation of the SOMS green hybrid spin-on micro-filter system
(Rensselaer Polytechnic Institute, Troy, NY, 2009-05) -
An implicit functional theory of viscoplasticity
(Rensselaer Polytechnic Institute, Troy, NY, 1976-09)A constitutive theory suitable for the description of metallic material behavior has been developed within the framework of a thermodynamical continuum theory. The theoretical development is firmly rooted in the concepts ...