Aeronautical Vehicles Commons^™

When Go-Around Is Impossible - Defining The Point Of No Return, Nihad E. Daidzic,, Thomas Peterson

Aviation Department Publications

No abstract provided.

Space Program For Kentucky, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Space Program for Kentucky" from October 22, 2008.

The Revolution In Space By University Students, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The Revolution in Space by University Students" from October 21, 2008.

Computational Solution Of Tail Buffet Response And Active Flow Control, Kaushik Laxmikant Joshi

Mechanical & Aerospace Engineering Theses & Dissertations

In this thesis, numerical simulation of the multidisciplinary method for prediction and control of vortex induced tail buffeting is studied using delta wing-single tail configuration. Flow conditions are chosen such that wing vortex cores experience vortex breakdown and the resulting wake flow impinges on the vertical tail. The aero/structure problem is solved sequentially using three sets of equations on a multi-block grid structure. To obtain aerodynamic loading on the tail, the fluid flow around the wing-tail assembly is computed by time-accurately solving unsteady, laminar, compressible Navier-Stokes equations using an implicit, upwind, flux-difference splitting finite volume scheme. Then the aeroelastic equations …

Raising The Dead, Nihad E. Daidzic

Aviation Department Publications

No abstract provided.

Book Review: Tourists In Space: A Practical Guide, T. D. Oswalt

Publications

This document is Dr. Oswalt’s review of Tourists in Space : a Practical Guide by Erik Seedhouse. Springer/Praxis, 2008 314p, 9780387746432 $34.95

Detecting Portable Electronic Devices Onboard Commercial Aircraft, Randy Woods

Electrical & Computer Engineering Theses & Dissertations

The need to detect unauthorized usage of intentionally transmitting portable electronic devices (PEDs) onboard commercial aircraft is growing while still allowing passengers to use selected unintentionally transmitting devices, such as laptop computers and CD players, during non-critical stages of flight. This thesis presents the development and testing of an installed system for detecting PEDs over multiple frequency bands. Additionally, the advantages of a fixed versus mobile system are discussed.

Data is presented to cover the frequency range of 20 MHz to 6.5 GHz with special attention given to the cellular and PCS telephone bands, Bluetooth, and the family radio service …

Multivariable Flight Control Design Tool Incorporating Gain And Phase Root Locus, Yong Ki Yoon

Mechanical & Aerospace Engineering Theses & Dissertations

A challenging problem in flight control system design for highly maneuverable aircraft is the coordinated control of the lateral-directional axes. Design goals are based on desired flying qualities giving an indication of whether the response to pilot inputs will be acceptable. Satisfying these closed-loop design objectives employing a computerized flight control system requires multiple feedback and crossfeed paths which operate in a well coordinated fashion. Contemporary control design tools, which close all loops simultaneously, have addressed this problem for several decades. Concerns associated with these strategies are the complicated mathematical relationships between the designer inputs and resulting closed-loop properties, and …

Image Processing Technique For Runway Segmentation Using Color Spaces, Naresh Reddy Reddy

Electrical & Computer Engineering Theses & Dissertations

Aircrafts of the future now face the challenge of growing demand for safety which will require a more significant level of pilot assistance than is available today. During an approach to the airport runway, an algorithm that continuously segments the runway from the rest of the background with very little human intervention is very useful for both enhancing the landing safety and reducing the pilot's work load. This thesis presents a novel method for segmenting airport runways on a clear day and in poor visibility conditions using the color space components. In this thesis, collages were formed for both runway …

Arliss-M Design Guide Version 1.1, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A design guide for the ARLISS-M published on June 9, 2008.

Cfd As Applied To The Design Of Short Takeoff And Landing Vehicles Using Circulation Control, Tyler M. Ball

Master's Theses

The ability to predict the distance required for an aircraft to takeoff is an essential component of aircraft design. It involves aspects related to each of the major aircraft systems: aerodynamics, propulsion, configuration, structures, and stability and control. For an aircraft designed for short takeoffs and landings (STOL), designing the aircraft to provide a short takeoff distance, or more precisely the balanced field length (BFL), often leads to the use of a powered lift technique such as circulation control (CC). Although CC has been around for many years, it has never been used on a production aircraft. This is in …

The Role Of Space In Education: Pajaro High School, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The Role of Space In Education: Pajaro High School" from May 15, 2008.

The Cubesat Role In New Science And Commercial Applications: International Workshop On Small Satellite, New Missions And New Technologies, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The CubeSat Role in new Science and Commercial Applications: International Workshop on Small Satellite, New Missions and New Technologies" from June 6, 2008.

Educational Outreach In The Arctic Regions?, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Educational Outreach in the Arctic Regions?" from April 24, 2008.

Impact Of Airline Business Models On Fuel Efficiency Of Aircraft Operations In The National Airspace System (Nas), Trisha R. Khetia

Mechanical & Aerospace Engineering Theses & Dissertations

This is a documentation of the research that has been conducted by T. Khetia of the Batten College of Engineering and Technology at Old Dominion University in Norfolk, Virginia. The report summarizes fuel efficiency studies of aircraft operations in the National Airspace System (NAS).

This research was conducted to analyze the Hub-and-Spoke (H&S) system operations in the NAS and how a change in the balance of the H&S system would affect fuel efficiency metrics in the NAS. Several fuel metrics were calculated during the research in order to find out which metric would best represent the desired operation of the …

Uncertainty Assessment Of Aircraft Maintenance Times By Using Evidence Theory And Expert Judgment Elicitation, Huseyin Kudak

Engineering Management & Systems Engineering Theses & Dissertations

The goal of this study is to demonstrate the use of the Dempster-Shafer Theory of evidence as a decision aid to predict aircraft maintenance times during wartime operations using expert judgment elicitation. Increased precision in time estimation enables the jet engine aircraft maintenance facility commander to make more accurate decisions for the Air Force's wartime tactical operations allowing the commander to gain a decisive advantage. A questionnaire was designed to elicit judgments from experts in the Aircraft Maintenance Facility (AMF) to investigate maintenance times of the major failure modes (Ignition, Fuel, and Electrical). Results of the expert judgment elicitation were …

Mission Results For Sapphire, A Student-Built Satellite, Michael Swartwout, Christopher Kitts, Robert J. Twiggs, Thomas Kenny, Billy Ray Smith, Rick Lu, Kevin Stattenfield, Freddy Pranajaya

Robert "Bob" Twiggs STEM Education Collection

A article published in the Journal of the International Academy of Astronautics titled "Mission results for Sapphire, a student-built satellite" published on March 7, 2008.

Space - A Place To Learn & Play: Astrobiology, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Space - A Place to Learn & Play: Astrobiology" from February 19, 2008.

Cricket Satellite Project: Hall Elementary School, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Cricket Satellite Project: Hall Elementary School" from February 18, 2008.

Seasonal Adaptation Of Vegetation Color In Satellite Images, Srinivas Jakkula, Vamsi K.R. Mantena, Ramu Pedada, Yuzhong Shen, Jiang Li, Hamid R. Arabnia (Ed.)

Electrical & Computer Engineering Faculty Publications

Remote sensing techniques like NDVI (Normal Difference vegetative Index) when applied to phenological variations in aerial images, ascertained the seasonal rise and decline of photosynthetic activity in different seasons, resulting in different color tones of vegetation. The rise and fall of NDVI values decide the biological response, either the green up or brown down [1]. Vegetation in green up period appears with more vegetative vigor and during brown down period it has a dry appearance. This paper proposes a novel method that identifies vegetative patterns in satellite images and then alters vegetation color to simulate seasonal changes based on training …