Now showing items 71-80 of 110
Measurement of near-wall stratified bubbly flows using electrical impedance
(IOP Publishing Ltd, 2005-04-01)
The impedance measurement between a pair of flush-mounted electrodes was used to measure the characteristics of a stratified near-wall bubbly flow. The variation in cross electrode impedance with liquid layer thickness and ...
The generation of digital random time histories
(Elsevier, 1982)
"A method to generate digital random time histories is described. A random number sequence is shaped to give the desired spectral density curve. This finite set of numbers is then Inverse Fast Fourier Transformed (IFFT). ...
Idle speed control of a direct injection spark ignition stratified charge engine
(John Wiley & Sons, Ltd., 2001-09)
Idle speed control is investigated for a direct injection, spark ignition, stratified charge (DISC) engine equipped with an electronic throttle. Such engines can be operated in multiple combustion modes. When operating in ...
A perspective on emerging automotive safety applications, derived from lessons learned through participation in the DARPA Grand Challenges
(Wiley Subscription Services, Inc., A Wiley Company, 2008-10)
This paper reports on various aspects of the Intelligent Vehicle Systems (IVS) team's involvement in the recent 2007 DARPA Urban Challenge, wherein our platform, the autonomous “XAV-250,'' competed as one of the 11 finalists ...
Deep Sea Underwater Robotic Exploration in the Ice-Covered Arctic Ocean with AUVs
(IEEE, 2008-09-22)
The Arctic seafloor remains one of the last unexplored areas on Earth. Exploration of this unique environment using standard remotely operated oceanographic tools has been obstructed by the dense Arctic ice cover. In the ...
Recent Advances in Synchronous-Clock One-Way-Travel-Time Acoustic Navigation
(IEEE, 2006-09-18)
This paper reports recent results in the development
and deployment of a synchronous-clock acoustic navigation
system suitable for the simultaneous navigation of multiple
underwater vehicles. The goal of this work is to ...
Experimental Results in Synchronous-Clock One-Way-Travel-Time Acoustic Navigation for Autonomous Underwater Vehicles
(IEEE, 2007-04-10)
This paper reports recent experimental results in the development and deployment of a synchronous-clock acoustic navigation system suitable for the simultaneous navigation of multiple underwater vehicles. The goal of this ...
A kilohertz frame rate cinemagraphic PIV system for laboratory-scale turbulent and unsteady flows
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2002-01)
A kilohertz frame rate cinemagraphic particle image velocimetry (PIV) system has been developed for acquiring time-resolved image sequences of laboratory-scale gas and liquid-phase turbulent flows. Up to 8000 instantaneous ...
Underwater Acoustic Navigation with the WHOI Micro-Modem
(IEEE, 2006-09-18)
The WHOI Micro-Modem is a compact, low-power
acoustic transceiver that can provide both acoustic telemetry and
navigation. Its size and versatility make it ideal for integration in
autonomous underwater vehicles (AUVs). ...