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Articles 8641 - 8670 of 11122
Full-Text Articles in Engineering
Atmocube: A Scientific And Educational Nanosatellite For The Study Of Space Weather Effects, Area Science Park
Atmocube: A Scientific And Educational Nanosatellite For The Study Of Space Weather Effects, Area Science Park
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation titled "AtmoCube: A scientific and educational nanosatellite for the study of Space Weather effects" from January 20, 2009.
The Cubesat Payload Complement On The Vega Maiden Flight, Piero C. Galeone, Jakob Fromm Pedersen
The Cubesat Payload Complement On The Vega Maiden Flight, Piero C. Galeone, Jakob Fromm Pedersen
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Piero C. Galeone and Jakob Fromm Pedersen titled "The CubeSat payload complement on the VEGA Maiden Flight" from January 20, 2009.
Radiation On Bipolar University Satellite Test Application, L. Dusseau
Radiation On Bipolar University Satellite Test Application, L. Dusseau
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by L. Dusseau titled "Radiation On Bipolar University Satellite Test Application" from January 20, 2009.
Esa Education Activities Update, Francesco Emma
Esa Education Activities Update, Francesco Emma
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Francesco Emma titled "ESA Education Activities Update" from January 20, 2009.
Yusend: York University Space Engineering Nanosatellite Demonstration Program, Hugh Chesser, Regina Lee
Yusend: York University Space Engineering Nanosatellite Demonstration Program, Hugh Chesser, Regina Lee
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Hugh Chesser and Regina Lee titled "YuSend: York University Space Engineering Nanosatellite Demonstration Program" from January 20, 2009.
Heidelsat: Heidelberg University Of Applied Sciences, Alexander Elbrecht, Achim Gottscheber, Jan Maltry, Peter Wright
Heidelsat: Heidelberg University Of Applied Sciences, Alexander Elbrecht, Achim Gottscheber, Jan Maltry, Peter Wright
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Alexander Elbrecht, Achim Gottscheber, Jan Maltry, and Peter Wright titled "HeidelSat: Heidelberg University of Applied Sciences" from January 20, 2009.
Applied Geomagnetics For Attitude Determination Experiment, Sebastian M. Ernst
Applied Geomagnetics For Attitude Determination Experiment, Sebastian M. Ernst
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Sebastian M. Ernst titled "Applied Geomagnetics for Attitude Determination Experiment" from January 20, 2009.
Amsat-Dl Telemetry Links: Past, Present And Future, A. Vollhardt
Amsat-Dl Telemetry Links: Past, Present And Future, A. Vollhardt
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by A. Vollhardt titled "AMSAT-DL telemetry links: past, present and future" from January 20, 2009.
Spacelink For Aausat3: Design Considerations Of The Entire Communication Chain, Johan Christiansen
Spacelink For Aausat3: Design Considerations Of The Entire Communication Chain, Johan Christiansen
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Johan Christiansen titled "Spacelink For AAUSAT3: Design considerations of the entire communication chain" for January 20, 2009.
Amsat: Who We Are And How We Can Help You!, Graham Shirville
Amsat: Who We Are And How We Can Help You!, Graham Shirville
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Graham Shirville titled "AMSAT: Who we are and how we can help you!" from January 20, 2009.
Goliat: Status Update, Mugurel Balan, Claudio Dragasanu, Marius Trusculescu
Goliat: Status Update, Mugurel Balan, Claudio Dragasanu, Marius Trusculescu
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Mugurel Balan, Claudio Dragasanu, and Marius Trusculescu titled "GOLIAT: Status Update" from January 20, 2009.
Oufti-1: The Cubesat Developed At The University Of Liège, Vincent Beukelaers, Johan Hardy, Francois Mahy
Oufti-1: The Cubesat Developed At The University Of Liège, Vincent Beukelaers, Johan Hardy, Francois Mahy
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Vincent Beukelaers, Johan Hardy, and François Mahy titled "OUFTI-1: The CubeSat developed at the University of Liège" from January 20, 2009.
Plume: Picosatellite Of Leicester University Micrometeoroid Experiment, Laura L. Evans, Daniel Brandt, Phillipa M. Molyneux, Philip J. D. Peterson, Matthew Denmark, George W. Fraser
Plume: Picosatellite Of Leicester University Micrometeoroid Experiment, Laura L. Evans, Daniel Brandt, Phillipa M. Molyneux, Philip J. D. Peterson, Matthew Denmark, George W. Fraser
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Laura L. Evans, Daniel Brandt, Phillipa M. Molyneux, Philip J.D. Peterson, Matthew Denmark, and George W. Fraser titled "PLUME: Picosatellite of Leicester University Micrometeoroid Experiment" for January 20, 2009.
Vega Maiden Flight Status For The Cubesat Flight Opportunity, Pablo Gallego Sanmiguel
Vega Maiden Flight Status For The Cubesat Flight Opportunity, Pablo Gallego Sanmiguel
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Pablo Gallego Sanmiguel titled "VEGA Maiden Flight Status for the CubeSat Flight Opportunity" from January 20, 2009.
Oslo Ground Station: Part Of The Ncube Iii Project, Eirik Vikan
Oslo Ground Station: Part Of The Ncube Iii Project, Eirik Vikan
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Eirik Vikan titled "Oslo Ground Station Part of the nCube III project" from January 16, 2009.
Decades Of Innovation In Aircraft Design Education, Russell M. Cummings, David W. Hall, Doral R. Sandlin
Decades Of Innovation In Aircraft Design Education, Russell M. Cummings, David W. Hall, Doral R. Sandlin
Aerospace Engineering
Aircraft design has formed the foundation of the aeronautical engineering curriculum at Cal Poly since the inception of the department in 1927. While the focus and approach for teaching aircraft design has changed a great deal over the decades, the importance of the Cal Poly “learn by doing” philosophy has been a constant element. The end result of this decades-long history of innovation and improvement has been the continued success of Cal Poly students in the AIAA design competitions, especially the Undergraduate Team Aircraft Design competition. Details about how the design curriculum has evolved and grown will be discussed, including …
Senior Design At Cal Poly: A Recipe For Success, Robert A. Mcdonald, Jordi Puig-Suari, Dave Esposto, Bruce Wright
Senior Design At Cal Poly: A Recipe For Success, Robert A. Mcdonald, Jordi Puig-Suari, Dave Esposto, Bruce Wright
Aerospace Engineering
The Aerospace Engineering Department at Cal Poly has, over the years, evolved a unique recipe for Senior Design. This recipe has been applied to the capstone Aircraft and Spacecraft design courses and will soon be extended to an Unmanned Aerial Vehicle design course. This recipe consists primarily of a year long design sequence with a great deal of participation from the region's aerospace industry. The Cal Poly recipe has proven to be both flexible and effective. The authors believe it could be adapted and applied in a similar manner at other institutions with a similar degree of success.
Underpowered Aircraft - Performance And Operational Possibilities, Andrew S. Ezzard, Michael R. Vallone, Robert A. Mcdonald
Underpowered Aircraft - Performance And Operational Possibilities, Andrew S. Ezzard, Michael R. Vallone, Robert A. Mcdonald
Aerospace Engineering
A unique configuration, known as an Underpowered Aircraft, allows for the modification of gliding flight vehicles for increased range and lower cost when compared with fully powered flight vehicles. Intentionally under-sizing the powerplant for a flight vehicle allows the designer to choose a powerplant that will not only perform the mission requirements, but will also provide the customer with the most cost effective solution, as some missions may not require fully powered flight. Specifically, the underpowered aircraft concept studied in this paper is a gliding flight aircraft that does not have enough power for climbing or level flight, but does …
A User Friendly Interface For Gaussian Process Metamodeling, Collin R. Baukol, Robert A. Mcdonald, Nicholas Delmas
A User Friendly Interface For Gaussian Process Metamodeling, Collin R. Baukol, Robert A. Mcdonald, Nicholas Delmas
Aerospace Engineering
As research into metamodeling and using advanced metamodeling techniques continues, it is important to remember design engineers who need to use these advancements. Even experienced engineers may not be well versed in the material and mathematical background that is currently required to generate and fully comprehend advanced complex metamodels. A user friendly metamodeling environment is being developed to help bridge the gap that is currently growing between the research community and the design engineers. This tool allows users to easily create, modify, and assess the quality of metamodels.
Lower-Order Aerodynamic Loads Modeling Of A Maneuvering Generic Fighter Using Ddes Simulations, Tiger L. Jeans, David R. Mcdaniel, Russell M. Cummings, Keith Bergeron
Lower-Order Aerodynamic Loads Modeling Of A Maneuvering Generic Fighter Using Ddes Simulations, Tiger L. Jeans, David R. Mcdaniel, Russell M. Cummings, Keith Bergeron
Aerospace Engineering
Unforeseen nonlinear aerodynamic behavior and/or fluid-structure interactions have affected the development of nearly every major fighter program since 1960. The development cost of each of these aircraft could have been drastically reduced if these aerodynamic issues had been identified earlier in the design process. Therefore, a high-fidelity computational tool capable of reliably predicting or identifying configurations susceptible to handling quality instabilities prior to flight test would be of great interest to the stability and control community. The United States Air Force Academy Modeling and Simulation Research Center and the United States Air Force Seek Eagle Office have initiated a joint …
John Mcmasters’Contributions To Aircraft Design Education, Russell M. Cummings
John Mcmasters’Contributions To Aircraft Design Education, Russell M. Cummings
Aerospace Engineering
John McMasters was intensely interested in two seemingly diverse pursuits: aircraft design and technical work force development. The later pursuit often got John involved in encouraging the development and improvement of engineering education, especially aircraft design education. He spent countless hours considering the issues that contribute to good design education, and was a strong proponent of programs that would encourage students to become interested in design. An overview of John’s ideas on aircraft design education will be presented based on discussions with John, as well as papers that we co-authored. In addition, John had a long talk with me just …
Propulsion System Modeling And Takeoff Distance Calculations For A Powered-Lift Aircraft With Circulation-Control Wing Aerodynamics, Mark Waters, Cassey Anthony, Gregory Mckenzie, David D. Marshall
Propulsion System Modeling And Takeoff Distance Calculations For A Powered-Lift Aircraft With Circulation-Control Wing Aerodynamics, Mark Waters, Cassey Anthony, Gregory Mckenzie, David D. Marshall
Aerospace Engineering
The computation of takeoff distance for powered-lift aircraft is complicated because of the coupling of aerodynamic performance (lift, drag and moment coefficients) with forward speed. Cal Poly has developed an analysis procedure to capture this coupling, and the development of this procedure is continuing. In the past year, Cal Poly has completed a Phase I NRA contract from the NASA for the configuration development and modeling of CESTOL aircraft. The primary objective of this contract was to identify an aircraft configuration in enough detail to proceed into a Phase II contract to design and construct a large scale wind tunnel …
Using Cfd As A Design Tool On New Innovative Airliner Configurations, Bryan H. Blessing, John Pham, David D. Marshall
Using Cfd As A Design Tool On New Innovative Airliner Configurations, Bryan H. Blessing, John Pham, David D. Marshall
Aerospace Engineering
This paper demonstrates the use of CFD thus far as a design tool in evaluating aerodynamic performance for a NASA Research Announcement (NRA) project. The NRA project is carried out in two phases over the course of three years. Phase I utilizes CFD to evaluate and down select between two proposed future generations CESTOL airliner concepts; the Hybrid Wing-Body and the Blended Wing-Body. Both configurations are simulated at takeoff and cruise conditions to provide the means to making a final decision on which concept to continue forward with in Phase II. This second phase will take the proposed airliner concept …
A Surface Parameterization Method For Airfoil Optimization And High Lift 2d Geometries Utilizing The Cst Methodology, Kevin A. Lane, David D. Marshall
A Surface Parameterization Method For Airfoil Optimization And High Lift 2d Geometries Utilizing The Cst Methodology, Kevin A. Lane, David D. Marshall
Aerospace Engineering
For aerodynamic modeling and optimization, it is desirable to limit the number of design variables to reduce model complexity and the requirements of the applied optimization scheme. The Class/Shape Transformation (CST) surface parameterization method presented by Kulfan has proven to be particularly useful for this while maintaining a wide range of applications. These include everything from smooth airfoils to 3D axi-symmetric bodies and wings. However, the CST method is confined to smooth geometries. This limits the CST method in applications incorporating discontinuous surfaces such as high lift aerodynamics with circulation control (CC) slots and flaps. The trailing edge slot on …
Exploiting A Gsm Network For Precise Payload Delivery, Eugene A. Bourakov, Oleg A. Yakimenko, Nathan Slegers
Exploiting A Gsm Network For Precise Payload Delivery, Eugene A. Bourakov, Oleg A. Yakimenko, Nathan Slegers
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
This paper introduces the novel concept of using a GSM network for command of and communications with multiple aerial delivery systems. The research prototype of such a system, Snowflake-N, allows communicating with other network clients via a commercial Blackberry Curve 8310 handheld over a Bluetooth connection. A new architecture allows reassigning targets and sending other relevant commands (via web interface, by voice, data, or text messages) to an onboard autopilot, which is within a network reach, from any place in the world. Similarly, a current position of the descending system and target assignment can be viewed from any computer connected …
Performance Of A Fire-And-Forget Anti-Tank Missile With A Damaged Wing, John Harris, Nathan Slegers
Performance Of A Fire-And-Forget Anti-Tank Missile With A Damaged Wing, John Harris, Nathan Slegers
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
A mathematical model is developed for an anti-tank missile and its guidance algorithms. The aerodynamic model is separated into two parts, the airframe and external lifting surfaces in order to model damage to the airframe. Radar data is compared to that of the proposed model and it is shown that the model accurately replicates the true flight dynamics. Two types of field handling damage are modeled, a damaged mid-body wing with 50% of its planform area missing, and an un-deployed mid-body wing. Monte Carlo simulations are performed for each type of damage and the eight possible mid-body wing locations. The …
Optimal Control For Terminal Guidance Of Autonomous Parafoils, Nathan Slegers, Oleg A. Yakimenko
Optimal Control For Terminal Guidance Of Autonomous Parafoils, Nathan Slegers, Oleg A. Yakimenko
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
This paper deals with the development of guidance, navigation and control algorithms for a prototype of a miniature aerial delivery system capable of high-precision maneuvering and high touchdown accuracy. High accuracy enables use in precision troop resupply, sensor placement, urban warfare reconnaissance, and other similar operations. Specifically, this paper addresses the terminal phase, where uncertainties in winds cause most of the problems. The paper develops a six degree-of-freedom model to adequately address dynamics and kinematics of the prototype delivery system and then reduces it to a two degrees-of-freedom model to develop a model predictive control algorithm for reference trajectory tracking …
Ipas: International Paper Airplanes In Space, Getaway Special Team 2009
Ipas: International Paper Airplanes In Space, Getaway Special Team 2009
Reports and Proposals
No abstract provided.
United States Air Force Posture Statement 2009, U.S. Air Force
United States Air Force Posture Statement 2009, U.S. Air Force
United States Air Force: Publications
Today, the United States faces a spectrum of challenges to our national security and global interests. As an integral member of the Joint team, America’s Air Force provides the critical capabilities of Global Vigilance, Global Reach, and Global Power. The United States Air Force is 'All In" today’s Joint fight. At the same time, our investments in new capabilities will ensure we are ready for tomorrow’s challenges. The mission of the United States Air Force is to "fly, fight, and win…in air, space and cyberspace"—as an integral member of the Joint …
Comment On "Three-Dimensional Ascent Trajectory Optimization For Stratospheric Airship Platforms In The Jet Stream", Nathan Slegers, Ainsmar X. Brown
Comment On "Three-Dimensional Ascent Trajectory Optimization For Stratospheric Airship Platforms In The Jet Stream", Nathan Slegers, Ainsmar X. Brown
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
No abstract provided.