Aerospace Engineering Commons^™

Comm-Processing Data, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs on "Comm-Processing Data" from March 3, 2014.

Antennas - Loose Slides, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs on "Antennas" from March 2, 2014.

Could We Colonize Venus?, Nihad E. Daidzic

Aviation Department Publications

No abstract provided.

On The Growth Rate Of Turbulent Mixing Layers: A New Parametric Model, Jeffrey L. Freeman

Master's Theses

A new parametric model for the growth rate of turbulent mixing layers is proposed. A database of experimental and numerical mixing layer studies was extracted from the literature to support this effort. The domain of the model was limited to planar, spatial, nonreacting, free shear layers that were not affected by artificial mixing enhancement techniques. The model is split into two parts which were each tuned to optimally fit the database; equations for an incompressible growth rate were derived from the error function velocity profile, and a function for a compressibility factor was generalized from existing theory on the convective …

The Impact Of Training And Technology On The Future Of Aviation, Jennifer Oberg

Graduate Student Works

The comprehensive exam proposal is intended to address the core competency requirements for the degree of Master of Aeronautical Science. In addition, the proposal will address the competency requirements for the Aviation Education Specialization. In partial fulfillment of these requirements, the proposal will examine human factors as they pertain specifically to the arena of unmanned flight, the impact computer based training and web based training advances have and will continue to have on the aviation community, the technological, social, environmental, and political aspects of the air cargo industry as they pertain to the industry’s survival, the ability of Next Generation …

Experimental Study On Influence Of Pitch Motion On The Wake Of A Floating Wind Turbine Model, Stanislav Rockel, Elizabeth Camp, Jonas Schmidt, Joachim Peinke, Raúl Bayoán Cal, Michael Höllimg

Mechanical and Materials Engineering Faculty Publications and Presentations

Wind tunnel experiments were performed, where the development of the wake of a model wind turbine was measured using stereo Particle Image Velocimetry to observe the influence of platform pitch motion. The wakes of a classical bottom fixed turbine and a streamwise oscillating turbine are compared. Results indicate that platform pitch creates an upward shift in all components of the flow and their fluctuations. The vertical flow created by the pitch motion as well as the reduced entrainment of kinetic energy from undisturbed flows above the turbine result in potentially higher loads and less available kinetic energy for a downwind …

Flight And Stability Of A Laser Inertial Fusion Energy Target In The Drift Region Between Injection And The Reaction Chamber With Computational Fluid Dynamics, Tiffany Leilani Mitori

Master's Theses

A Laser Inertial Fusion Energy (LIFE) target’s flight through a low Reynolds number and high Mach number regime was analyzed with computational fluid dynamics software. This regime consisted of xenon gas at 1,050 K and approximately 6,670 Pa. Simulations with similar flow conditions were performed over a sphere and compared with experimental data and published correlations for validation purposes. Transient considerations of the developing flow around the target were explored. Simulations of the target at different velocities were used to determine correlations for the drag coefficient and Nusselt number as functions of the Reynolds number. Simulations with different target angles …

Development Of Safety Standards For Cubesat Propulsion Systems, Liam Jon Cheney

Master's Theses

The CubeSat community has begun to develop and implement propulsion systems. This movement represents a new capability which may satisfy mission needs such as orbital and constellation maintenance, formation flight, de-orbit, and even interplanetary travel. With the freedom and capability granted by propulsion systems, CubeSat providers must accept new responsibilities in proportion to the potential hazards that propulsion systems may present.

The Cal Poly CubeSat program publishes and maintains the CubeSat Design Specification (CDS). They wish to help the CubeSat community to safety and responsibly expand its capabilities to include propulsive designs. For this reason, the author embarked on the …

Frequency-Limited Adaptive Control Of A Generic Transport Model In The Presence Of System Uncertainty And Losses In Control Effectiveness, Gerardo De La Torre, Tansel Yucelen, Wassim M. Haddad, Eric N. Johnson

Mechanical and Aerospace Engineering Faculty Research & Creative Works

While adaptive control has been used in numerous applications to achieve system performance without excessive reliance on dynamical system models, the necessity of high-gain learning rates for safety-critical systems to achieve fast adaptation can be a serious limitation of most adaptive controllers. In order to address this problem, two novel adaptive control approaches developed recently aim to limit the bandwidth of the closed-loop adaptive control system in order to suppress the high-frequency content contained in the system error dynamics and adaptation algorithms. Specifically, this key feature of these frameworks allows for robust and fast adaptation by utilizing high-gain learning rates …

Data Link For Palamede Spacecraft Based On The Orbcomm Constellation As Space Infrastructure, Franco Bernelli-Zazzera

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Franco Bernelli-Zazzera on "Data link for Palamede spacecraft based on the Orbcomm constellation as space infrastructure" from February 21, 2014.

Galileo, The European Global Navigation Satellite System:Status And Challenges, Marco Lisi

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Marco Lisi on "Galileo, the European Global Navigation Satellite System:Status and Challenges" from February 20, 2014.

Infrastructure For Planetary Science, Carle M. Pieters

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Carle M. Pieters on "Infrastructure for Planetary Science" from February 20, 2014.

Current Developments In Space Infrastructure: Space Horizons 2014, Mason Peck

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Mason Peck on "Current Developments in Space Infrastructure: Space Horizons 2014" from February 20, 2014.

Quasars And Pulsars And Masers (Oh, My!), Michael Hecht

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Michael Hecht on "Quasars and Pulsars and Masers (Oh, my!)" from February 19, 2014.

Pocketqubes: Access To Space Infrastructure For Small Organizations, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs on "PocketQubes: Access to space infrastructure for small organizations" from February 19, 2014.

Pocketqubes: Access To Space Infrastructure For Small Organizations, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "PocketQubes: Access to space infrastructure for small organizations" from February 19, 2014.

Comm-Link Equations - Loose Slides, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs on "Comm-Link Equations" from February 13, 2014.

Computer Data Busses, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs on "Computer Data Busses" from February 13, 2014.

Commincations - Deicibel, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs on "Comminications - Decibel" from February 11, 2014.

Communications - Decibel, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Communications - Decibel" from February 11, 2014.