Now showing items 1-10 of 2054
Examination of the application and limitations of structural mode extraction via force apportionment
(Virginia Tech, 1996-02-05)
<p>This paper will discuss the use of force apportionment to isolate modes being excited by the sine-dwell technique. The effectiveness of the apportionment technique can be determined by examining the structural response ...
Investigation of Inlet Guide Vane Wakes in a F109 Turbofan Engine with and without Flow Control
(Virginia Tech, 2000-08-17)
A series of experiments were conducted in a F109 turbofan engine to investigate the unsteady wake profiles of an Inlet Guide Vane (IGV) at a typical spacing to the downstream fan at subsonic and transonic relative blade ...
Analysis of energy flow in controlled structures subject to initial conditions
(Virginia Tech, 1995)
High resolution scattering measurements for stationary particles
(Virginia Tech, 2017-11-21)
Particle characterization is important to the aerospace field because particle ingestion in propulsion engines can lead to catastrophic failures. It has been shown laser based methodologies can determine size and concentration ...
Influence of Advanced Airbags on Injury Risk During Frontal Crashes
(Virginia Tech, 2013-09-17)
The combination of airbag and seatbelt is considered to be the most effective vehicle safety system. However, despite the widespread availability of airbags and a belt use rate of over 85% U.S. drivers involved in crashes ...
An Open Loop Feed-Forward Control Scheme for Bioinspired Artificial Hair Cell Sensors
(Virginia Tech, 2015-03-11)
This research documents the creation and use of an open-loop feed forward control scheme designed to manipulate the DC potential across lipid bilayer membranes in artificial hair cell sensors. Inspired by the human cochlea's ...
Single-Walled Carbon Nanotube Response to Neutron and Gamma Irradiation
(Virginia Tech, 2013-05-23)
The unique electronic properties of single-walled carbon nanotubes (SWNTs) have sparked interest for using such nanomaterials in the nuclear industry and within radiation detection devices. To explore the application of ...
Simultaneous active passive/control of extensional and flexural power flows in infinite thin beams
(Virginia Tech, 1996-07-15)
A design procedure for model reference adaptive control
(Virginia Tech, 1995-08-10)
In this study, we assess the robustness of four distinct control approaches: pole placement; the command generator tracker (CGT) approach to model reference control; model reference adaptive control (MRAC); and MRAC using ...