Browsing by Author "Cochran, John"

Now showing items 1-13 of 13

Angles-Only Initial Relative-Orbit Determination via Successive Maneuvers

Hebert, Laura (2016-04-29)

For relative-orbit determination using linear, Cartesian dynamics, angles-only measurements are not sufficient. A known, impulsive maneuver performed by either the observer or resident space object can provide observability. ...

Design and Construction of a Mach 2 Wind Tunnel For Cavity Acoustics Research

Davis, Brian (2013-04-17)

Cavity flow is encountered in many practical applications of ground and air vehicles operating at high speed. Examples include airflow past open windows, sunroofs, and wheel-wells of automobiles as well as landing gear and ...

Design and Testing of a Gas Distribution Method for Pulsed Inductive Thrusters

Miller, Robert (2008-12-15)

A gas distribution manifold for use in a Pulsed Inductive Thruster has been designed and tested. The Argon test gas is distributed radially outward over a flat disc from an enclosed manifold area. The manifold was designed ...

Design of a Guidance Controller Using Network Topology

Robertson, Clay (2016-08-05)

In dynamic environments, the control of a formation of unmanned vehicles remains a significant control problem on both network and guidance dynamics levels. Currently, formations of unmanned vehicles require multiple ground ...

Design Optimization of Space Launch Vehicles Using a Genetic Algorithm

Bayley, Douglas (2007-08-15)

The United States Air Force (USAF) continues to have a need for assured access to space. In addition to flexible and responsive spacelift, a reduction in the cost per launch of space launch vehicles is also desirable. ...

Development and Implementation of a Trajectory Prediction Methodology

Robertson, Clay Jackson (2012-04-16)

Operation of unmanned aircraft in the United States' National Airspace System (NAS) is currently severely restricted, primarily due to the need to ensure adequate separation between manned and unmanned aircraft (UA). A ...

Effect of Coordinate Switching on Simulation Accuracy of Translunar Trajectories

Vautier, Mana (2008-08-15)

This thesis focuses on the effect of round-off error in the accurate simulation of translunar trajectories. The three-body dynamics can be posed in either an Earth-centered (EC) or Moon-centered (MC) frame. In this study, ...

Identification of a Tethered Satellite Using an Extended Kalman Filter

Volovecky, Elizabeth (2007-12-15)

Recent studies involving a tethered satellite system(s) (TSS) have increased due to the importance of accurately identifying and analyzing the motion of a TSS. If the motion of a tethered satellite is not accurately ...

Nonlinear Tracking of Natural Mechanical Systems for HWIL Simulation

Martin, Justin (2007-08-15)

Auburn University has entered into collaboration with the US Department of Defense for academic study and development of hardware-in-the-loop simulation laboratory. One aspect of this collaboration has been research into ...

Passive Pendulum Balancer for Rotor Systems

Horvath, Roland (2006-05-15)

Automatic, passive self-balancing systems are important tools for reducing the effects of synchronous vibration in a variety of rotating machinery. Such systems are ideally capable of precise balancing, subject to certain ...

Simultaneous Localization and Planning of Cooperative Air Munitions via Dynamic Programming

Doucette, Emily (2008-05-15)

This work centers on the real-time trajectory planning for the cooperative control of two aerial munitions in a planar setting. One munition strikes the stationary ground target and the other will serve as an observer. ...

System Identification of General Aviation Aircraft Using the Filter Error Technique

Patel, Dakshesh (2007-12-15)

An overview of some past and modern applications of system identification techniques to aircraft is presented in this thesis, which traces progress and accomplishments in the field of system identification - especially ...

Three-Dimensional Trajectory Optimization in Constrained Airspace

Dai, Ran (2007-12-15)

This dissertation deals with the generation of three-dimensional optimized trajectory in constrained airspace. It expands the previously used two-dimensional aircraft model to a three-dimensional model and includes the ...