Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Six-degree-of-freedom (6DOF)"”.
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Comparison of Guidance Methods for Autonomous Planetary Lander
… Apollo approach, and real time. The equations of motion for an arbitrary planetary lander with sloshing fuel and a gimbaled nozzle are derived using a Newtonian approach. A six degree of freedom (6DOF) simulation of the vehicle system dynamics is programmed in Simulink to test the various …
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Method to Develop a Control System for a Stable and Guidable Hybrid Projectile
… In many situations it is desirable for this type of projectile to change its point of impact and depart from its current ballistic trajectory similar to a UAV following a path. A method was created to utilize deflectable control surfaces in conjunction with a guidance system to ensure the HP was …
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Advancing 6DoF Object Pose Estimation: Keypoint Voting, Optimal Keypoint Sampling, and Bridging the Simulation-to-real Gap
This thesis explores advancements in six-degree-of-freedom (6DoF) object pose estimation using point cloud and RGB-D data. Three novel methodologies are proposed to address distinct challenges in this field. First, RCVPose3D introduces a cascaded keypoint voting framework that separates semantic …
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Algorithms for Generation and Tracking of Fast and Agile Flight Trajectories
… enable highly accurate maneuvering at the edge of the vehicle’s capability. These algorithms must overcome challenges particular to fast and agile flight, such as complex dynamics effects including significant unsteady aerodynamics and challenging conditions like post-stall and uncoordinated …
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Experimental Investigation into the Long-Term Seismic Performance of Dry Storage Casks
A series of eight shake table experiments were conducted to assess the long-term seismic performance of Dry Storage Casks (DSCs). Four scaled specimens were designed to cover a wide range of commercially available DSCs with emphasis on aspect ratios, the radius over the height of the center of mass …
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Adaptive Controller Development and Evaluation for a 6DOF Controllable Multirotor
… is a small unmanned aerial vehicle capable of executing decoupled translational and rotational motion (six degree of freedom, 6DOF, motion). The development of controllers for various 6DOF controllable multirotors has been much more limited than development for quadrotors, which makes …
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Modeling and validation of a subscale aerobatic aircraft configuration in spin
An approach for modeling the stall/spin regime of single engine aircraft is presented. A three-pronged approach is taken that involves the following components: flight testing, the development of a new analytical model for calculating the forces on a stalled spinning wing, and validation of that …