Now showing items 31-40 of 1635
Collision Analysis of the Reversible Crankshaft Mechanism in a Convertible Refrigeration Compressor
(Virginia Tech, 2000-06-02)
The purpose of this study is to analyze the behavior of a reversible two-cylinder refrigerant compressor manufactured by Bristol Compressor Incorporated. This compressor contains a specialized linkage that causes the ...
An Investigation of Effectiveness of Normal and Angled Slot Film Cooling in a Transonic Wind Tunnel
(Virginia Tech, 2008-02-22)
An experimental and numerical investigation was conducted to determine the film cooling effectiveness of a normal slot and angled slot under realistic engine Mach number conditions. Freestream Mach numbers of 0.65 and 1.3 ...
Electro-dynamic analysis of stack actuators and active members integrated within truss structures
(Virginia Tech, 1994-08-15)
<p>In this thesis, a method of predicting the steady state, dynamic, electromechanical behavior of stack actuators (both electrostrictive and piezoelectric) integrated within complex structures is developed and experimentally ...
Performance Analysis Of Active and Passive Multi-Array Sonar Networks
(Virginia Tech, 2007-12-05)
This work investigates the ideal distribution of sensors in networked arrays. MATLAB models these arrays and simulates the results these networks obtain using active and passive sonar. These results determine the ideal ...
Operation Characteristics of a Plasma Torch for Supersonic Combustion Applications with Simulated Cracked JP-7 Feedstock
(Virginia Tech, 2004-05-07)
Research conducted at Virginia Tech has examined plasma torch operational characteristics using a feedstock gas of mixed hydrocarbons representing a cracked JP-7 surrogate. The tests were part of a program to examine the ...
Development of the Pressure-Sensitive-Paint Technique for Advanced Turbomachinery Applications
(Virginia Tech, 1997-04-24)
A new pressure-measurement technique which employs the tools of molecular spectroscopy has recently received considerable attention in the fluid mechanics community. Measurements are made via oxygen-sensitive molecules ...
Two Minds for One Vehicle: A Case Study in Deliberative and Reactive Navigation
(Virginia Tech, 2006-03-29)
There are two commonly accepted paradigms for organizing intelligence in robotic vehicles, namely reactive and deliberative. A third, a hybrid paradigm called integrated planning and execution, is considered a combination ...
An experimental study of lifting and moving forces in air conveying systems
(Virginia Tech, 1992-02-04)
Adaptive Collocated Feedback for Noise Absorption in Acoustic Enclosures
(Virginia Tech, 2006-10-06)
This thesis focuses on adaptive feedback control for low frequency acoustic energy absorption in acoustic enclosures. The specific application chosen for this work is the reduction of high interior sound pressure levels ...