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Articles 1 - 30 of 36
Full-Text Articles in Other Aerospace Engineering
Space Environment-Ii Lecture - Powerpoint Presentation, Robert J. Twiggs
Space Environment-Ii Lecture - Powerpoint Presentation, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
Professor Bob Twiggs' lecture on Space Environment-II PowerPoint presentation delivered on December 3, 2012.
Solar Energy Collection Analysis Tool For Conceptual Aircraft Design, Grant Glazebrook
Solar Energy Collection Analysis Tool For Conceptual Aircraft Design, Grant Glazebrook
Aerospace Engineering
As battery energy storage and solar cell technology improve, solar aircraft are increasingly being considered for High Altitude Long Endurance missions. Although solar vehicles may theoretically remain on-station indefinitely using the sun as a power source, their design and feasibility is sensitive to mission planning details as specific as the time history of the vehicle’s deck orientation relative to the sun; the energy available for capture by the on-board solar array is governed by the solar incidence angle, and at certain orientations, the vehicle may cast shadows on itself and further reduce its energy capture capabilities. To quantify these losses, …
Cubesat: From The Beginning To Who Knows Where, Robert J. Twiggs
Cubesat: From The Beginning To Who Knows Where, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "CubeSat: From the Beginning to Who Knows Where" from November 13, 2012.
Small-Satellites For Arctic And Maritime Operations And Research, Robert J. Twiggs
Small-Satellites For Arctic And Maritime Operations And Research, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Small-Satellites for Arctic and Maritime Operations and Research" from November 9, 2012.
Cubesat, Robert J. Twiggs
Cubesat, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "CubeSat" from November 7, 2012.
Chargersat-1 Prototype Development, Matt Rodencal, Eric Becnel
Chargersat-1 Prototype Development, Matt Rodencal, Eric Becnel
Von Braun Symposium Student Posters
No abstract provided.
The Us Challenge To Stay The Worlds Technical Leader In Innovation, Robert J. Twiggs
The Us Challenge To Stay The Worlds Technical Leader In Innovation, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "The US Challenge to Stay the Worlds Technical Leader in Innovation" from October 18, 2012.
Microgravity Testing Of Uahuntsville’Schargersat-1, Justin Riegel
Microgravity Testing Of Uahuntsville’Schargersat-1, Justin Riegel
Von Braun Symposium Student Posters
No abstract provided.
Instrument For Testing The Effect Of Boiling In Microgravity, Eric Becnel
Instrument For Testing The Effect Of Boiling In Microgravity, Eric Becnel
Von Braun Symposium Student Posters
No abstract provided.
Analytical Modeling Of Stochastic Pulse-Pileup In Radiation Detectors, Vandiver Chaplin, P. N. Bhat
Analytical Modeling Of Stochastic Pulse-Pileup In Radiation Detectors, Vandiver Chaplin, P. N. Bhat
Von Braun Symposium Student Posters
No abstract provided.
Microgravity Stowage System–A Random Access System For Deep Space Habitat Implementation, Clint Deerman, Drew Deerman
Microgravity Stowage System–A Random Access System For Deep Space Habitat Implementation, Clint Deerman, Drew Deerman
Von Braun Symposium Student Posters
No abstract provided.
An Investigation Of U.S. Orbital Debris Policy Changes To Support Leo Conservation, Thomas Percy
An Investigation Of U.S. Orbital Debris Policy Changes To Support Leo Conservation, Thomas Percy
Von Braun Symposium Student Posters
No abstract provided.
Educating Undergraduate Space Science Students With Real Space Missions: Nanosatellite And Nanolab Missions In Kentucky, Robert J. Twiggs
Educating Undergraduate Space Science Students With Real Space Missions: Nanosatellite And Nanolab Missions In Kentucky, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Educating Undergraduate Space Science Students with Real Space Missions: NanoSatellite and NanoLab Missions in Kentucky" from September 27, 2012.
Proposed Msu Matchbooksat For Iss Launch 2014, Robert J. Twiggs
Proposed Msu Matchbooksat For Iss Launch 2014, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Proposed MSU MatchBookSat for ISS Launch 2014" from September 6, 2012.
Where Did All Those Launches Come From? Or What Can We Do Now That We Have Launches?, Robert J. Twiggs
Where Did All Those Launches Come From? Or What Can We Do Now That We Have Launches?, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Where did all those Launches come from? Or What can we do now that we have launches?" from August 11, 2012.
Control System Development For Small Uav Gimbal, Nicholas J. Brake
Control System Development For Small Uav Gimbal, Nicholas J. Brake
Master's Theses
The design process of unmanned ISR systems has typically driven in the direction of increasing system mass to increase stabilization performance and imagery quality. However, through the use of new sensor and processor technology high performance stabilization feedback is being made available for control on new small and low mass stabilized platforms that can be placed on small UAVs. This project develops and implements a LOS stabilization controller design, typically seen on larger gimbals, onto a new small stabilized gimbal, the Tigereye, and demonstrates the application on several small UAV aircraft. The Tigereye gimbal is a new 2lb, 2-axis, gimbal …
Tiny Satellites For Stem, Carlos G. Niederstrasser
Tiny Satellites For Stem, Carlos G. Niederstrasser
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Carlos G. Niederstrasser titled "Tiny Satellites for STEM" from July 13, 2012.
High-Fidelity Low-Thrust Trajectory Determination Research And Analysis, Tyler Hill
High-Fidelity Low-Thrust Trajectory Determination Research And Analysis, Tyler Hill
Aerospace Engineering
This document discusses a numerical analysis method for low thrust trajectory propagation known as the proximity quotient or Q-Law. The process uses a Lyapunov feedback control law developed by Petropoulos[1] to propagate trajectories of spacecraft by minimizing the user defined function at the target orbit. A simplified propagator is created from the core mechanics of this method in MATLAB and tested in several user defined cases to demonstrate its capabilities. Several anomalies arose in test cases where variations in eccentricity, inclination, right ascension of the ascending node, and argument of perigee were specified. Solutions to these anomalies are discussed …
Global Launch Vehicle Selector, Keisuke Suzuki
Global Launch Vehicle Selector, Keisuke Suzuki
Aerospace Engineering
No abstract provided.
Development Of A Pyrotechnic Shock Simulation Apparatus For Spacecraft Applications, Joseph Binder, Matthew Mccarty, Chris Rasmussen
Development Of A Pyrotechnic Shock Simulation Apparatus For Spacecraft Applications, Joseph Binder, Matthew Mccarty, Chris Rasmussen
Aerospace Engineering
This report details the research, design, construction, and testing of a pyrotechnic shock simulation apparatus for spacecraft applications. The apparatus was developed to be used in the Space Environments Lab at California Polytechnic State University. It will be used for testing spacecraft components with dimensions up to 24”x12”x12” as well as CubeSats. Additionally, it may be used as an instructional or demonstrational tool in the Aerospace Department’s space environments course. The apparatus functions by way of mechanical impact of an approximately 20 lb stainless steel swinging hammer. Tests were performed to verify the simulator’s functionality. Suggestions for improvement and further …
Thermal Vacuum Integration For Cal Poly's Space Environments Laboratory, Chelsea Barackman, Steven Jackowski
Thermal Vacuum Integration For Cal Poly's Space Environments Laboratory, Chelsea Barackman, Steven Jackowski
Aerospace Engineering
The purpose of the senior project is to construct a thermal vacuum by utilizing a preexisting vacuum chamber in the Space Environments Lab, and a donated Advanced Thermal Sciences (ATS) chiller. While a thermal vacuum is already available on campus, building one for the Space Environments Lab would grant undergraduates access to the equipment, allowing a much better understanding of testing methods and procedures in use by the aerospace industry. This paper explains the design and analysis of the thermal vacuum (T-VAC) project as well as the operation and procedures required for the ATS chiller and fill/drain tank. The thermal …
De-Orbiting Upper Stage Rocket Bodies Using A Deployable High Altitude Drag Sail, Robert A. Hawkins Jr., Joseph A. Palomares
De-Orbiting Upper Stage Rocket Bodies Using A Deployable High Altitude Drag Sail, Robert A. Hawkins Jr., Joseph A. Palomares
Aerospace Engineering
This report examines the effectiveness of a drag sail to de-orbit upper stage rocket bodies. Many other perturbations contribute to the de-orbiting of these rocket bodies, and these perturbations will also be discussed briefly. This paper will show the length of time needed to force the altitudes of various launch vehicle stages with varying drag area sizes to less than 100 km. The upper stage of the Delta IV launch vehicle in an orbit with an altitude of 500 km will naturally de-orbit in 720 days but when equipped with a 20 m2 drag sail, it will de-orbit in …
Degradation Of Solar Cells Due To Arcing In A Vacuum Chamber, Christina Gonzalez
Degradation Of Solar Cells Due To Arcing In A Vacuum Chamber, Christina Gonzalez
Aerospace Engineering
This report summarizes the senior project entitled Degradation of Solar Cells Due to Arcing in a Vacuum Chamber. The goal of this experiment was to show electrical and physical degradation of silicon solar cells in a vacuum chamber. The cells were characterized and then placed in a vacuum chamber. Under vacuum, a potential was created to induce arcing to the cell. The cell was characterized again after arcing to determine the change in efficiency. This document details the process for designing the circuit to create the arcing, and the different setups used to degrade the cells electrically and physically. It …
Flaperon Assembly Manual For Pegastol Aftermarket Wings, Eric Alan Gray
Flaperon Assembly Manual For Pegastol Aftermarket Wings, Eric Alan Gray
Aerospace Engineering
No abstract provided.
Assembly Of A Passive Slat System For A Ch-701 Kit Aircraft, Jordan Coenen, Spencer Spagnola
Assembly Of A Passive Slat System For A Ch-701 Kit Aircraft, Jordan Coenen, Spencer Spagnola
Aerospace Engineering
No abstract provided.
Data Acquisition For Flight Tests Using Handheld Gps And Electronic Flight Instrument System, Christopher Michael Gocha
Data Acquisition For Flight Tests Using Handheld Gps And Electronic Flight Instrument System, Christopher Michael Gocha
Aerospace Engineering
No abstract provided.
Registering An Amateur-Built Light Sport Kit Aircraft, Kevin Condron
Registering An Amateur-Built Light Sport Kit Aircraft, Kevin Condron
Aerospace Engineering
No abstract provided.
Analysis And Testing Of Heat Transfer Through Honeycomb Panels, Daniel D. Nguyen
Analysis And Testing Of Heat Transfer Through Honeycomb Panels, Daniel D. Nguyen
Aerospace Engineering
This project attempts to simulate accurately the thermal conductivity of honeycomb panels in the normal direction. Due to the large empty space of the honeycomb core, the thermal radiation mode of heat transfer was modeled along with conduction. Using Newton’s Method to solve for a steady state model of heat moving through the honeycomb panel, the theoretical effective thermal conduction of the honeycomb panel was found, ranging from 1.03 to 1.07 Q/m/K for a heat input of 2.5 W to 11.8 W. An experimental model was designed to test the theoretical results, using a cold plate and a heat plate …
Comm-Multiple Access - Slides, Robert J. Twiggs
Comm-Multiple Access - Slides, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Comm-Multiple Access" from April 24, 2012.
Ec 723 Satellite Communication Systems, Mohammed Khedr
Ec 723 Satellite Communication Systems, Mohammed Khedr
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Mohammed Khdr titled "EC 723 Satellite Communication Systems" from April 10, 2012.