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Aerospace Engineering Commons™

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Navigation, Guidance, Control and Dynamics

Selected Works

2014

Articles 1 - 3 of 3

Full-Text Articles in Aerospace Engineering

Investigation Of An Autonomous Landing Sensor For Unmanned Aerial Systems, A Ram (Bella) Kim Jan 2014

Investigation Of An Autonomous Landing Sensor For Unmanned Aerial Systems, A Ram (Bella) Kim

A Ram (Bella) Kim

This research focused on characterizing the precision, reliability, sensitivity, and uncertainty of an autonomous landing sensor. Currently, the most dangerous flight phase for autonomous aircraft is the landing and takeoff segments, accounting for almost 70% of crashes. This research analyzes the effects of the color and roughness of the landing surface, fog, ice, and varying aircraft angles on the performance of an automated landing sensor. An investigation of suitable sensors was performed and the Dimetix FLS-C30 laser altimeter was selected for testing. The standard deviation and uncertainty of each condition was found and compared. It was determined that surface color, …

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Rocket Flight Path, Jamie L. Waters Jan 2014

Rocket Flight Path, Jamie L. Waters

Jamie L Waters

This project uses Newton’s Second Law of Motion, Euler’s method, basic physics, and basic calculus to model the flight path of a rocket. From this project, one can find the height and velocity at any point from launch to the maximum altitude, apogee. Once complete this can be compared to what the actual values were to see if the method is a plausible way of estimation. The rocket used in this project is modeled after Bullistic-1 which was launched by the Society of Aeronautics and Rocketry at the University of South Florida.

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Dynamic Surface Control Of Constrained Hypersonic Flight Models With Parameter Estimation And Actuator Compensation, Bin Xu Jan 2014

Dynamic Surface Control Of Constrained Hypersonic Flight Models With Parameter Estimation And Actuator Compensation, Bin Xu

Bin Xu

In this paper, the robust adaptive controller is investigated for the longitudinal dynamics of a generic hypersonic flight vehicle. The proposed methodology addresses the issue of controller design and stability analysis with respect to parametric model uncertainty and input saturations for the control-oriented model. The velocity and attitude subsystems are transformed into the linearly parameterized form. Based on the parameter projection estimation, the dynamic inverse control is proposed via the back-stepping scheme. In order to avoid the problem of “explosion of complexity,” by introducing a first-order filtering of the synthetic input at each step, the dynamic surface control is designed. …

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