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Articles 181 - 210 of 318
Full-Text Articles in Aerospace Engineering
Tools For The Conceptual Design And Engineering Analysis Of Micro Air Vehicles, Mustafa Turan
Tools For The Conceptual Design And Engineering Analysis Of Micro Air Vehicles, Mustafa Turan
Theses and Dissertations
Micro Air Vehicles (MAV) are a subset of Unmanned Aircraft (UAS) that are up to two orders of magnitude smaller than manned systems. Near-Earth environments, such as forests, caves, tunnels and urban structures make reconnaissance, surveillance and search-and-rescue missions difficult and dangerous to accomplish. Therefore, MAVs are considered ideal for these types of missions. However, the data using full size aircraft is inadequate to characterize miniature aircraft parameters due to the lower Reynolds numbers and low aspect ratio (LAR) wings and impact of wing-propeller interactions. The main objectives of this research were to: collect and synthesize the available data/tools; create …
Using Predictive Rendering As A Vision-Aided Technique For Autonomous Aerial Refueling, Adam D. Weaver
Using Predictive Rendering As A Vision-Aided Technique For Autonomous Aerial Refueling, Adam D. Weaver
Theses and Dissertations
This research effort seeks to characterize a vision-aided approach for an Unmanned Aerial System (UAS) to autonomously determine relative position to another aircraft in a formation, specifically to address the autonomous aerial refueling problem. A system consisting of a monocular digital camera coupled with inertial sensors onboard the UAS is analyzed for feasibility of using this vision-aided approach. A three-dimensional rendering of the tanker aircraft is used to generate predicted images of the tanker as seen by the receiver aircraft. A rigorous error model is developed to model the relative dynamics between an INS-equipped receiver and the tanker aircraft. A …
A Feasibility Study Of A Persistent Monitoring System For The Flight Deck Of U.S. Navy Aircraft Carriers, Jeffrey S. Johnston
A Feasibility Study Of A Persistent Monitoring System For The Flight Deck Of U.S. Navy Aircraft Carriers, Jeffrey S. Johnston
Theses and Dissertations
This research analyzes the use of modern Real Time Locating Systems (RTLS), such as the Global Positioning System (GPS), to improve the safety of aircraft, equipment, and personnel onboard a United States Navy (USN) aircraft carrier. The results of a detailed analysis of USN safety records since 1980 show that mishaps which could potentially be prevented by a persistent monitoring system result in the death of a sailor nearly every other year and account for at least $92,486,469, or 5.55% of the total cost of all flight deck and hangar bay related mishaps. A system to continually monitor flight deck …
Cubesats, Any Applications?, Robert J. Twiggs
Cubesats, Any Applications?, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "CubeSats, Any Applications?" from March 3, 2009.
Molecular Dynamics Study Of Crystal Plasticity During Nanoindentation In Ni Nanowires, V. Dupont, F. Sansoz
Molecular Dynamics Study Of Crystal Plasticity During Nanoindentation In Ni Nanowires, V. Dupont, F. Sansoz
Aerospace Engineering - Daytona Beach
Molecular dynamics simulations were performed to gain fundamental insight into crystal plasticity, and its size effects in nanowires deformed by spherical indentation. This work focused on-oriented single-crystal, defect-free Ni nanowires of cylindrical shape with diameters of 12 and 30 nm. The indentation of thin films was also comparatively studied to characterize the influence of free surfaces in the emission and absorption of lattice dislocations in single-crystal Ni. All of the simulations were conducted at 300 K by using a virtual spherical indenter of 18 nm in diameter with a displacement rate of1 ms1. No significant effect of sample size was …
Miniaturization Techniques To Realize Very Small Satellites, Robert J. Twiggs
Miniaturization Techniques To Realize Very Small Satellites, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Miniaturization techniques to realize very small satellites" from April 1, 2009.
Fun & Games With Space Projects, Robert J. Twiggs
Fun & Games With Space Projects, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Fun & Games with Space Projects" from February 27, 2009.
Communication Free Robot Swarming, Zachary C. Gray
Communication Free Robot Swarming, Zachary C. Gray
Theses and Dissertations
As the military use of unmanned aerial vehicles increases, a growing need for novel strategies to control these systems exists. One such method for controlling many unmanned aerial vehicles simultaneously is the through the use of swarm algorithms. This research explores a swarm robotic algorithm developed by Kadrovach implemented on Pioneer Robots in a real-world environment. An adaptation of his visual sensor is implemented using stereo vision as the primary method of sensing the environment. The swarm members are prohibited from explicitly communicating other than passively through the environment. The resulting implementation produces a communication free swarming algorithm. The algorithm …
Automated Knowledge Generation With Persistent Surveillance Video, Daniel T. Schmitt
Automated Knowledge Generation With Persistent Surveillance Video, Daniel T. Schmitt
Theses and Dissertations
The Air Force has increasingly invested in persistent surveillance platforms gathering a large amount of surveillance video. Ordinarily, intelligence analysts watch the video to determine if suspicious activities are occurring. This approach to video analysis can be a very time and manpower intensive process. Instead, this thesis proposes that by using tracks generated from persistent video, we can build a model to detect events for an intelligence analyst. The event that we chose to detect was a suspicious surveillance activity known as a casing event. To test our model we used Global Positioning System (GPS) tracks generated from vehicles driving …
Space In Education, Robert J. Twiggs
Space In Education, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Space in Education" from February 20, 2009.
Space Program For Kentucky, Robert J. Twiggs
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 February 15, 2009.
On The Inside Of Spaceshipone, Dan Linehan
On The Inside Of Spaceshipone, Dan Linehan
ERAU Prescott Aviation History Program
Hear the inside story of the development, testing and flight of the world’s first privately built and piloted manned spacecraft by the author of “SpaceShip One” An Illustrated History”. Exciting photos, videos and animations will help explain how and why all this took place.
A System For Measuring The Lift And Drag Forces Of A Spinning Golf Ball Held Fixed Within A Wind Tunnel, Ryan R. Miller
A System For Measuring The Lift And Drag Forces Of A Spinning Golf Ball Held Fixed Within A Wind Tunnel, Ryan R. Miller
Master's Theses
A system was designed, built and tested in order to test the aerodynamic properties of a standard golf ball in a wind tunnel manufactured by ELD, Inc. model 406(B). The system consists of a rotating shaft, on which the golf ball is attached, connected to a two-axis force transducer. Additionally, an automated data acquisition system was built for enhanced precision of measurements. Data for wind speeds up to 160 ft/s and rotational speeds up to 8,600 rpm were obtained and analyzed. The purpose of the designed apparatus was to allow for studies to better understand the lift and drag coefficients …
Reconfigurable Communication Systems For Cubesats Xat-52100-Pre-001-Uvigo.Inta, Gabriel Gonzalez Fernandez, Fernando Aguado-Agelet, Cesar Martinez-Fernandez
Reconfigurable Communication Systems For Cubesats Xat-52100-Pre-001-Uvigo.Inta, Gabriel Gonzalez Fernandez, Fernando Aguado-Agelet, Cesar Martinez-Fernandez
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Gabriel González Fernández, Fernando Aguado-Agelet, and César Martínez-Fernández titled "Reconfigurable communication systems for CubeSats XAT-52100-PRE-001-UVIGO.INTA" from January 22, 2009.
A System Approach For A Double Cubesat, Sindre Persen, Anton Bolstad
A System Approach For A Double Cubesat, Sindre Persen, Anton Bolstad
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Sindre Persen and Anton Bolstad titled "A system approach for a double CubeSat" from January 22, 2009.
Cubesat Technology Demonstration Mission, Tanya Vladimirova, Christopher Bridges, Saad Malik, Muhammad Fayyaz, Muhammad Owais, Adeel Shahzeb, Robert Barnes, Asim Qureshi, Jean Paul, Guoxia Yu, Abdul-Halim Jallad, Martin Sweeting
Cubesat Technology Demonstration Mission, Tanya Vladimirova, Christopher Bridges, Saad Malik, Muhammad Fayyaz, Muhammad Owais, Adeel Shahzeb, Robert Barnes, Asim Qureshi, Jean Paul, Guoxia Yu, Abdul-Halim Jallad, Martin Sweeting
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Tanya Vladimirova, Christopher Bridges, Saad Malik, Muhammad Fayyaz, Muhammad Owais, Adeel Shahzeb, Robert Barnes, Asim Qureshi, Jean Paul, Guoxia Yu, Abdul-Halim Jallad and Martin Sweeting titled "CubeSat Technology Demonstration Mission" from January 22, 2009.
Analysing Multi‐Mission Capability In Cubesat Design, Steve Greenland
Analysing Multi‐Mission Capability In Cubesat Design, Steve Greenland
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Steve Greenland titled "Analysing multi‐mission capability in CubeSat design" from January 22, 2009.
Novel Electric Propulsion Technology Demonstration On Estcube-1 Mission, Urmas Kvell
Novel Electric Propulsion Technology Demonstration On Estcube-1 Mission, Urmas Kvell
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Urmas Kvell titled "Novel electric propulsion technology demonstration on EstCube-1 mission" from January 22, 2009.
Xatcobeo Engineering Process Xat-20000-Pre-001-Uvigo.Inta, Jorge Iglesias, Ricardo Tubio, Fernando Aguado, Cesar Martinez, Estefania Sarmiento, Ivan Lora
Xatcobeo Engineering Process Xat-20000-Pre-001-Uvigo.Inta, Jorge Iglesias, Ricardo Tubio, Fernando Aguado, Cesar Martinez, Estefania Sarmiento, Ivan Lora
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Jorge Iglesias, Ricardo Tubío, Fernando Aguado, César Martínez, Estefanía Sarmiento, and Iván Lora titled "Xatcobeo Engineering Process XAT-20000-PRE-001-UVIGO.INTA" from January 21, 2009.
Canadian Advanced Nanospace Experiment 2: On-Orbit Experiences, Michael Greene, Guy De Carufel
Canadian Advanced Nanospace Experiment 2: On-Orbit Experiences, Michael Greene, Guy De Carufel
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Michael Greene and Guy de Carufel titled "Canadian Advanced Nanospace eXperiment 2: On-orbit Experiences" from January 21, 2009.
Move: The Munich Orbital Verification Experiment, Technische Universität München – Lehrstuhl Für Raumfahrttechnik / Institute Of Astronautics
Move: The Munich Orbital Verification Experiment, Technische Universität München – Lehrstuhl Für Raumfahrttechnik / Institute Of Astronautics
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by the Technische Universität München – Lehrstuhl für Raumfahrttechnik / Institute of Astronautics titled "MOVE: The Munich Orbital Verification Experiment" from January 21, 2009.
Obdh For Xatcobeo Xat-51100-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Santiago Rodríguez Bustabad, Hilda Rodríguez Martínez
Obdh For Xatcobeo Xat-51100-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Santiago Rodríguez Bustabad, Hilda Rodríguez Martínez
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Darío Hermida Cabaleiro, Santiago Rodríguez Bustabad and Hilda Rodríguez Martínez titled "OBDH for Xatcobeo XAT-51100-PRE-001-UVIGO.INTA" from January 21, 2009.
Rds For Xatcobeo Xat-52200-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Ángela Rivera Campos
Rds For Xatcobeo Xat-52200-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Ángela Rivera Campos
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Darío Hermida Cabaleiro and Ángela Rivera Campos titled "RDS for Xatcobeo XAT-52200-PRE-001-UVIGO.INTA" from January 21, 2009.
Flymate: The Next Generation Of Picosatellite Deployers, Spas Balinov
Flymate: The Next Generation Of Picosatellite Deployers, Spas Balinov
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Spas Balknov titled "FlyMate: The Next Generation of Picosatellite Deployers" from January 21, 2009.
The Evolution Of Cubesats In Education, Robert J. Twiggs
The Evolution Of Cubesats In Education, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "The Evolution of CubeSats in Education" from January 21, 2009.
Global Educational Network For Satellite Operations, Helen Page
Global Educational Network For Satellite Operations, Helen Page
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Helen Page titled "Global Educational Network for Satellite Operations" from January 21, 2009.
Leemsat-I: Payload Contest For A Fully Student Cubesat, Spanish Space Students Congress
Leemsat-I: Payload Contest For A Fully Student Cubesat, Spanish Space Students Congress
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Spanish Space Students Congress titled "LEEMSat-I: Payload Contest for a fully student CubeSat" from Janaury 21, 2009.
Delfi-C3 Mission Results And Delfi-N3xt Progress, Jasper Bouwmeester
Delfi-C3 Mission Results And Delfi-N3xt Progress, Jasper Bouwmeester
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Jasper Bouwmeester titled "Delfi-C3 Mission Results and Delfi-n3Xt Progress" from January 21, 2009.
Space Debris Detection On Cubesats, Tobias Rad
Space Debris Detection On Cubesats, Tobias Rad
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Tobias Rad titled "Space debris detection on CubeSats" from January 21, 2009.
An Overview Of The Microsystem-Based Nanospacecraft Neomex Strawman Theme Within The Trp Activities 2008-2010, J. Kohler
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by J. Kohler titled "An overview of the microsystem-based nanospacecraft NEOMEx strawman theme within the TRP activities 2008-2010" from January 20, 2009.