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Articles 571 - 600 of 1104
Full-Text Articles in Aeronautical Vehicles
Fault-Tolerant Trajectory Tracking Of Unmanned Aerial Vehicles Using Immunity-Based Model Reference Adaptive Control, Brenton K. Wilburn
Fault-Tolerant Trajectory Tracking Of Unmanned Aerial Vehicles Using Immunity-Based Model Reference Adaptive Control, Brenton K. Wilburn
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation presents the design, development, and simulation testing of an adaptive trajectory tracking algorithm capable of compensating for various aircraft subsystem failures and upset conditions. A comprehensive adaptive control framework, here within referred to as the immune model reference adaptive control (IMRAC) algorithm, is developed by synergistically merging core concepts from the biologically- inspired artificial immune system (AIS) paradigm with more traditional optimal and adaptive control techniques. In particular, a model reference adaptive control (MRAC) algorithm is enhanced with the detection and learning capabilities of a novel, artificial neural network augmented AIS scheme. With the given modifications, the MRAC …
Control Design And Performance Analysis For Autonomous Formation Flight Experiments, Caleb M. Rice
Control Design And Performance Analysis For Autonomous Formation Flight Experiments, Caleb M. Rice
Graduate Theses, Dissertations, and Problem Reports (ETD)
Autonomous Formation Flight is a key approach for reducing greenhouse gas emissions and managing traffic in future high density airspace. Unmanned Aerial Vehicles (UAV’s) have made it possible for the physical demonstration and validation of autonomous formation flight concepts inexpensively and eliminates the flight risk to human pilots. This thesis discusses the design, implementation, and flight testing of three different formation flight control methods, Proportional Integral and Derivative (PID); Fuzzy Logic (FL); and NonLinear Dynamic Inversion (NLDI), and their respective performance behavior. Experimental results show achievable autonomous formation flight and performance quality with a pair of low-cost unmanned research fixed …
Adaptive Control Techniques For Transition-To-Hover Flight Of Fixed-Wing Uavs, Brian Decimo Marchini
Adaptive Control Techniques For Transition-To-Hover Flight Of Fixed-Wing Uavs, Brian Decimo Marchini
Master's Theses
Fixed-wing unmanned aerial vehicles (UAVs) with the ability to hover combine the speed and endurance of traditional fixed-wing fight with the stable hovering and vertical takeoff and landing (VTOL) capabilities of helicopters and quadrotors. This combination of abilities can provide strategic advantages for UAV operators, especially when operating in urban environments where the airspace may be crowded with obstacles. Traditionally, fixed-wing UAVs with hovering capabilities had to be custom designed for specific payloads and missions, often requiring custom autopilots and unconventional airframe configurations. With recent government spending cuts, UAV operators like the military and law enforcement agencies have been urging …
Understanding Orbits Orbit Perturbations, Robert J. Twiggs
Understanding Orbits Orbit Perturbations, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Understanding Orbits Orbit Perturbations" on November 14, 2013.
Understanding Orbits Orbit Facts, Robert J. Twiggs
Understanding Orbits Orbit Facts, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Understanding Orbits Orbit Facts" on November 14, 2013.
Understanding Orbits Eclipses, Robert J. Twiggs
Understanding Orbits Eclipses, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs on "Understanding Orbits Eclipses" on November 14, 2013.
Flying The U-2, Art Saboski
Flying The U-2, Art Saboski
ERAU Prescott Aviation History Program
Learn what it was like to fly the famous U-2, one of history’s most secretive aircraft, from a pilot who has done just that. Art Saboski spent most of his Air Force career flying the U-2; commanding U-2 organizations as well as planning and conducting reconnaissance/intelligence operations. He will give his unique perspectives on the high altitude aircraft, its history, development and current uses today.
Mech/Engr 371 Space Systems Design And Engineering: Introduction To Systems Engineering, Christopher Kitts
Mech/Engr 371 Space Systems Design And Engineering: Introduction To Systems Engineering, Christopher Kitts
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Christopher Kitts of Santa Clara University on "MECH/ENGR 371 Space Systems Design and Engineering: Introduction to Systems Engineering" on November 12, 2013.
Spacecraft Subsystems - Class Presentation, Kevin Brown
Spacecraft Subsystems - Class Presentation, Kevin Brown
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Kevin Brown on "Spacecraft Subsystems" on November 6, 2013.
Coded Aperture Aided Navigation And Geolocation Systems, Jamie R. Morrison, John F. Raquet, Michael J. Veth
Coded Aperture Aided Navigation And Geolocation Systems, Jamie R. Morrison, John F. Raquet, Michael J. Veth
AFIT Patents
A micro air vehicle having a navigation system with a single camera to determine position and attitude of the vehicle using changes the direction to the observed features. The difference between the expected directions to the observed features versus the measured direction to the observed features is used to correct a navigation solution.
Aircraft Tests Arrive At Numbers Pilots Need For Safe Operations, Nihad E. Daidzic
Aircraft Tests Arrive At Numbers Pilots Need For Safe Operations, Nihad E. Daidzic
Aviation Department Publications
No abstract provided.
Satellite Orbits An Introduction To Orbital Mechanics, Ben Malphrus
Satellite Orbits An Introduction To Orbital Mechanics, Ben Malphrus
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation delivered by Professor Ben Malphrus on "Satellite Orbits An Introduction to Orbital Mechanics" on October 31, 2013.
Space Systems Engineering Sse 120 - Fall 2013 Space Lecture, Robert J. Twiggs
Space Systems Engineering Sse 120 - Fall 2013 Space Lecture, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
Space Systems Engineering SSE 120 - Fall 2013, Space Lecture presented by Professor Bob Twiggs on October 15, 2013.
Space Environment-I Lecture - Powerpoint Presentation, Robert J. Twiggs
Space Environment-I Lecture - Powerpoint Presentation, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
Professor Bob Twiggs PowerPoint lecture on Space Environment presented on October 14, 2013.
Space Systems Engineering Sse 120 - Space Lecture, Fall 2013, Robert J. Twiggs
Space Systems Engineering Sse 120 - Space Lecture, Fall 2013, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
Professor Bob Twiggs' preview questions for his space lecture on Space Systems Engineering SSE 120 delivered on October 14, 2013.
Syllabus For Space Systems Engineering 120: Satellites And Space Systems I (Fall 2013), Robert J. Twiggs
Syllabus For Space Systems Engineering 120: Satellites And Space Systems I (Fall 2013), Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
The Fall 2013 Syllabus for Professor Bob Twiggs' Space Systems Engineering 120: Satellites and Space Systems I Course taught at Morehead State University.
Space Radiation Environment - Space Systems Engineering Sse 120, Fall 2013, Robert J. Twiggs
Space Radiation Environment - Space Systems Engineering Sse 120, Fall 2013, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
Lecture preview on "Space Radiation Environment" created by Professor Bob Twiggs on September 24, 2013.
Space Radiation Environment: Sse 120 By Richard Mcneil, Richard Mcneil
Space Radiation Environment: Sse 120 By Richard Mcneil, Richard Mcneil
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation delivered by Richard McNeil on "Space Radiation Environment" on September 24, 2013.
Cosmic Perspective: Where Is Space, Robert J. Twiggs
Cosmic Perspective: Where Is Space, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Bob Twigg on September 19, 2013, related to the "Cosmic Perspective."
Elements Of Space Chapter 2: Entering Space & The Age Of Rockets, Robert J. Twiggs
Elements Of Space Chapter 2: Entering Space & The Age Of Rockets, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Elements of Space Chapter 2: Entering Space & The Age of Rockets" from September 3, 2013.
Adopting A Kinetic Energy Recovery System For Helicopters, Nihad E. Daidzic
Adopting A Kinetic Energy Recovery System For Helicopters, Nihad E. Daidzic
Aviation Department Publications
No abstract provided.
Assessment - Introduction To Sse-120: Sataellites & Space Systems I, Robert J. Twiggs
Assessment - Introduction To Sse-120: Sataellites & Space Systems I, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
PowerPoint presentation for Introduction to SSE-120: Sataellites & Space Systems I - Assessment given by Bob Twiggs on August 19, 2013 at Morehead State University.
Work Ethics For Sse-122: Satellites & Space Systems (Fall 2013), Robert J. Twiggs
Work Ethics For Sse-122: Satellites & Space Systems (Fall 2013), Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
PowerPoint presentation by Professor Bob Twiggs on work ethics for SSE-122: Satellites & Space Systems for the fall 2013 semester, created on August 8, 2013.
Introduction To Sse-120: Sataellites & Space Systems I, Robert J. Twiggs
Introduction To Sse-120: Sataellites & Space Systems I, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
PowerPoint presentation for Introduction to SSE-120: Sataellites & Space Systems I given by Bob Twiggs on August 6, 2013 at Morehead State University.
T/O Overruns And Veer-Offs On Slippery Runways With Crosswinds, Nihad E. Daidzic
T/O Overruns And Veer-Offs On Slippery Runways With Crosswinds, Nihad E. Daidzic
Aviation Department Publications
No abstract provided.
Design Practice, Robert J. Twiggs
Design Practice, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Design Practice" on July 30, 2013.
Power Storage & Control, Robert J. Twiggs
Power Storage & Control, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Power Storage & Control" on July 30, 2013.
Overview Of Eps, Robert J. Twiggs
Overview Of Eps, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on an "Overview of EPS" on July 30, 2013.
Power Sources, Robert J. Twiggs
Power Sources, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Power Sources" on July 30, 2013.
Design Advantages Of Skin Friction Drag Reduction Using Riblets, John Michael Gregory
Design Advantages Of Skin Friction Drag Reduction Using Riblets, John Michael Gregory
Mechanical & Aerospace Engineering Theses & Dissertations
The research reported here has examined the potential improvements in overall aircraft performance that can result from integrating skin friction reduction technology, such as riblets, early in the aircraft design cycle. This study has shown that riblets can improve the payload capacity, increase the range, and improve performance of transport aircraft. If recent advances in fabrication techniques make it possible to create aluminum wing surfaces with integral riblet geometries, the applications could be widespread and the gains significant.