Browsing Aeronautics and astronautics by Author "Vagners, Juris"
Now showing items 1-10 of 10
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Adaptation and Automation of Search and Rescue Patterns with Implementation for an Operational Unmanned Aircraft System
Arbeit, Amy (2014-02-24)The development and employment of Unmanned Aircraft Systems (UAS) is transferring many missions from manned aircraft to UAS. Search is one of these missions. This work proposes leveraging the familiar, well-established ... -
An Algorithm for Autonomous Formation Obstacle Avoidance
Cruz, Yunior Israel (2013-07-23)The level of human interaction with Unmanned Aerial Systems varies greatly from remotely piloted aircraft to fully autonomous systems. In the latter end of the spectrum, the challenge lies in designing effective algorithms ... -
Altitude-Constrained Occlusion-Aware UAV Coverage Planning for Autonomous Wilderness Search and Rescue
Broyles, DanielAutonomous Unoccupied Aerial Vehicles (UAVs) have transformed how search and rescue (SAR) missions operate, enabling rapid real-time video feedback over large and difficult-to-access areas. However, ensuring full search ... -
An Analysis of the Risk from UAS Missions in the National Airspace
Awad, Armand Issam (2013-11-14)As Unmanned Aerial Systems (UAS) are integrated into the national airspace, we must be careful to ensure that the hazard rate to human bystanders is sufficiently small. The first source of risk to bystanders involves midair ... -
Control of Rotorcraft at Low Speed
Gauksheim, Kristoffer RaulNonlinearities, uncertainties, and disturbances challenge automatic control systems. For rotorcraft at low speed, nonlinearities can include reversals in control trim and effectiveness gradients with airspeed. These phenomena ... -
Flight Testing of Cell Network-Based Navigation for sUAS
Kuni, Helen ColleenThe operational weaknesses and limitations of a navigation system based solely on GPS have long posed a problem for unmanned aircraft. The lack of any non-GPS-based backup system leaves vehicles vulnerable to sources of ... -
Modeling Aircraft Position and Conservatively Calculating Airspace Violations for an Autonomous Collision Awareness System for Unmanned Aerial Systems
Ueunten, KevinWith the scheduled 30 September 2015 integration of Unmanned Aerial System (UAS) into the national airspace, the Federal Aviation Administration (FAA) is concerned with UAS capabilities to sense and avoid conflicts. Since ... -
Probabilistic Estimation of State via Propagation of Error for a Collision Warning System
Le, Bao AnThe Federal Aviation Administration (FAA) is scheduled to open the national airspace to Unmanned Aerial Systems (UAS) by 2015. Although there are many beneficial applications by integrating UASs into the national airspace, ... -
Stability and Control of a Morphing Vehicle
Koch, Thomas S. (2013-02-25)Air vehicle design is a study in compromises. Aircraft configurations are optimized to perform at one point in their flight envelope at the expense of performance at off nominal flight conditions. Two wildly different ... -
UAS Position Estimation in GPS Degraded/Denied Skies via WiFi and Cell Network Data (WiCeNav)
Davis, Matthew JosephSmart phones tell us where we are. How do they accomplish this task? Moreover, how do they accomplish this task when a GPS signal is not present? What specific functionality exists in cellular networks that allows this? ...