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Space Vehicles Commons™

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2009

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Articles 31 - 60 of 89

Full-Text Articles in Space Vehicles

Reusable Launch Vehicle Design Implications For Regeneration Time, Carlos Alberto Molina Mar 2009

Reusable Launch Vehicle Design Implications For Regeneration Time, Carlos Alberto Molina

Theses and Dissertations

In last few years, the Air Force Research Laboratory sponsored several research projects on a Reusable Launch Vehicles (RLV) whose design, operation, and logistics requirements are intended to be much simpler than for the Space Shuttle. As a part of these efforts, previous researchers developed a model that simulated the post-landing, ground maintenance and prelaunch operations of a RLV in order to evaluate how its design parameters affect the logistics operations. The next logical step is to investigate the effects and interactions of all factors used in the existing simulation model in a single experiment that considers the huge number …


An Engineering Trade Space Analysis For A Space-Based Hyperspectral Chromotomographic Scanner, Phillip Sheirich Mar 2009

An Engineering Trade Space Analysis For A Space-Based Hyperspectral Chromotomographic Scanner, Phillip Sheirich

Theses and Dissertations

Hyperspectroscopy for fast transient events such as battlefield explosions is an undeveloped area of spectral imaging. This thesis is a discussion of issues involved with taking a laboratory design for a rotating prism hyperspectral chromotomographic (CT) instrument and producing a first approximation satellite payload design, operating scheme and trade space analysis to support demonstration of this technology in low-earth orbit. This instrument promises the capability of adding a time dimension to the normal spatial and spectral data produced by most hyperspectral imagers. The ultimate goal is to conduct experiments demonstrating the ultimate viability of spectral definition of transient combustion events …


Near Real-Time Closed-Loop Optimal Control Feedback For Spacecraft Attitude Maneuvers, C. Douglas Mcfarland Mar 2009

Near Real-Time Closed-Loop Optimal Control Feedback For Spacecraft Attitude Maneuvers, C. Douglas Mcfarland

Theses and Dissertations

Optimization of spacecraft attitude maneuvers can significantly reduce attitude control system size and mass, and extend satellite end-of-life. Optimal control theory has been applied to solve a variety of open-loop optimal control problems for terrestrial, air, and space applications. However, general application of real-time optimal controllers on spacecraft for large slew maneuvers has been limited because open-loop control systems are inherently vulnerable to error and the computation necessary to solve for an optimized control solution is resource intensive. This research effort is focused on developing a near real-time optimal control (RTOC) system for spacecraft attitude maneuvers on the Air Force …


Finite Element Model Optimization Of The Falconsat-5 Structural Engineering Model, Cole C. Doupe Mar 2009

Finite Element Model Optimization Of The Falconsat-5 Structural Engineering Model, Cole C. Doupe

Theses and Dissertations

Space launch vehicles produce tremendously harsh environments for their payloads. One of the worst contributors to this harsh environment is vibration. Launch vehicle contractors require accurate dynamic models in order to perform coupled loads analyses with each payload to mitigate risks. Accurate predictions of the dynamic response of the payload are not achieved easily. The Finite Element (FE) method has proven to be the best approach in creating accurate dynamic models of complex structures. To improve the agreement between an FE model and the structure it represents, a common practice is to `tune' or adjust parameters of the FE model …


Characterizing The Exhaust Plume Of The Three-Electrode Micro Pulsed Plasma Thrusters, Myeongkyo Seo Mar 2009

Characterizing The Exhaust Plume Of The Three-Electrode Micro Pulsed Plasma Thrusters, Myeongkyo Seo

Theses and Dissertations

Three-electrode micro-PPTs are a new version of two electrode micro-PPTs devices. Performance predictions and contamination expectations are essential characteristics needed by satellite designers. In order to focus on thruster specific impulse, thrust and efficiency, measuring the exhaust velocity or impulse bit and propellant consumption rate is essential. While this is not always possible to measure directly, focusing on the ejected mass from the PPT provides significant information allowing determination of these performance statistics. Specifically, focusing on exhaust angle distribution and velocity of the exhaust particles is the emphasis of this work. The results show that the three-electrode micro-PPT is more …


Cubesats, Any Applications?, Robert J. Twiggs Mar 2009

Cubesats, Any Applications?, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "CubeSats, Any Applications?" from March 3, 2009.


Miniaturization Techniques To Realize Very Small Satellites, Robert J. Twiggs Mar 2009

Miniaturization Techniques To Realize Very Small Satellites, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "Miniaturization techniques to realize very small satellites" from April 1, 2009.


Fun & Games With Space Projects, Robert J. Twiggs Feb 2009

Fun & Games With Space Projects, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "Fun & Games with Space Projects" from February 27, 2009.


Space In Education, Robert J. Twiggs Feb 2009

Space In Education, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "Space in Education" from February 20, 2009.


Space Program For Kentucky, Robert J. Twiggs Feb 2009

Space Program For Kentucky, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "Space Program for Kentucky" from February 15, 2009.


On The Inside Of Spaceshipone, Dan Linehan Feb 2009

On The Inside Of Spaceshipone, Dan Linehan

ERAU Prescott Aviation History Program

Hear the inside story of the development, testing and flight of the world’s first privately built and piloted manned spacecraft by the author of “SpaceShip One” An Illustrated History”. Exciting photos, videos and animations will help explain how and why all this took place.


Reconfigurable Communication Systems For Cubesats Xat-52100-Pre-001-Uvigo.Inta, Gabriel Gonzalez Fernandez, Fernando Aguado-Agelet, Cesar Martinez-Fernandez Jan 2009

Reconfigurable Communication Systems For Cubesats Xat-52100-Pre-001-Uvigo.Inta, Gabriel Gonzalez Fernandez, Fernando Aguado-Agelet, Cesar Martinez-Fernandez

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Gabriel González Fernández, Fernando Aguado-Agelet, and César Martínez-Fernández titled "Reconfigurable communication systems for CubeSats XAT-52100-PRE-001-UVIGO.INTA" from January 22, 2009.


A System Approach For A Double Cubesat, Sindre Persen, Anton Bolstad Jan 2009

A System Approach For A Double Cubesat, Sindre Persen, Anton Bolstad

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Sindre Persen and Anton Bolstad titled "A system approach for a double CubeSat" from January 22, 2009.


Cubesat Technology Demonstration Mission, Tanya Vladimirova, Christopher Bridges, Saad Malik, Muhammad Fayyaz, Muhammad Owais, Adeel Shahzeb, Robert Barnes, Asim Qureshi, Jean Paul, Guoxia Yu, Abdul-Halim Jallad, Martin Sweeting Jan 2009

Cubesat Technology Demonstration Mission, Tanya Vladimirova, Christopher Bridges, Saad Malik, Muhammad Fayyaz, Muhammad Owais, Adeel Shahzeb, Robert Barnes, Asim Qureshi, Jean Paul, Guoxia Yu, Abdul-Halim Jallad, Martin Sweeting

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Tanya Vladimirova, Christopher Bridges, Saad Malik, Muhammad Fayyaz, Muhammad Owais, Adeel Shahzeb, Robert Barnes, Asim Qureshi, Jean Paul, Guoxia Yu, Abdul-Halim Jallad and Martin Sweeting titled "CubeSat Technology Demonstration Mission" from January 22, 2009.


Analysing Multi‐Mission Capability In Cubesat Design, Steve Greenland Jan 2009

Analysing Multi‐Mission Capability In Cubesat Design, Steve Greenland

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Steve Greenland titled "Analysing multi‐mission capability in CubeSat design" from January 22, 2009.


Novel Electric Propulsion Technology Demonstration On Estcube-1 Mission, Urmas Kvell Jan 2009

Novel Electric Propulsion Technology Demonstration On Estcube-1 Mission, Urmas Kvell

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Urmas Kvell titled "Novel electric propulsion technology demonstration on EstCube-1 mission" from January 22, 2009.


Xatcobeo Engineering Process Xat-20000-Pre-001-Uvigo.Inta, Jorge Iglesias, Ricardo Tubio, Fernando Aguado, Cesar Martinez, Estefania Sarmiento, Ivan Lora Jan 2009

Xatcobeo Engineering Process Xat-20000-Pre-001-Uvigo.Inta, Jorge Iglesias, Ricardo Tubio, Fernando Aguado, Cesar Martinez, Estefania Sarmiento, Ivan Lora

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Jorge Iglesias, Ricardo Tubío, Fernando Aguado, César Martínez, Estefanía Sarmiento, and Iván Lora titled "Xatcobeo Engineering Process XAT-20000-PRE-001-UVIGO.INTA" from January 21, 2009.


Canadian Advanced Nanospace Experiment 2: On-Orbit Experiences, Michael Greene, Guy De Carufel Jan 2009

Canadian Advanced Nanospace Experiment 2: On-Orbit Experiences, Michael Greene, Guy De Carufel

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Michael Greene and Guy de Carufel titled "Canadian Advanced Nanospace eXperiment 2: On-orbit Experiences" from January 21, 2009.


Move: The Munich Orbital Verification Experiment, Technische Universität München – Lehrstuhl Für Raumfahrttechnik / Institute Of Astronautics Jan 2009

Move: The Munich Orbital Verification Experiment, Technische Universität München – Lehrstuhl Für Raumfahrttechnik / Institute Of Astronautics

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Technische Universität München – Lehrstuhl für Raumfahrttechnik / Institute of Astronautics titled "MOVE: The Munich Orbital Verification Experiment" from January 21, 2009.


Obdh For Xatcobeo Xat-51100-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Santiago Rodríguez Bustabad, Hilda Rodríguez Martínez Jan 2009

Obdh For Xatcobeo Xat-51100-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Santiago Rodríguez Bustabad, Hilda Rodríguez Martínez

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Darío Hermida Cabaleiro, Santiago Rodríguez Bustabad and Hilda Rodríguez Martínez titled "OBDH for Xatcobeo XAT-51100-PRE-001-UVIGO.INTA" from January 21, 2009.


Rds For Xatcobeo Xat-52200-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Ángela Rivera Campos Jan 2009

Rds For Xatcobeo Xat-52200-Pre-001-Uvigo.Inta, Darío Hermida Cabaleiro, Ángela Rivera Campos

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Darío Hermida Cabaleiro and Ángela Rivera Campos titled "RDS for Xatcobeo XAT-52200-PRE-001-UVIGO.INTA" from January 21, 2009.


Flymate: The Next Generation Of Picosatellite Deployers, Spas Balinov Jan 2009

Flymate: The Next Generation Of Picosatellite Deployers, Spas Balinov

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Spas Balknov titled "FlyMate: The Next Generation of Picosatellite Deployers" from January 21, 2009.


The Evolution Of Cubesats In Education, Robert J. Twiggs Jan 2009

The Evolution Of Cubesats In Education, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The Evolution of CubeSats in Education" from January 21, 2009.


Global Educational Network For Satellite Operations, Helen Page Jan 2009

Global Educational Network For Satellite Operations, Helen Page

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Helen Page titled "Global Educational Network for Satellite Operations" from January 21, 2009.


Leemsat-I: Payload Contest For A Fully Student Cubesat, Spanish Space Students Congress Jan 2009

Leemsat-I: Payload Contest For A Fully Student Cubesat, Spanish Space Students Congress

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Spanish Space Students Congress titled "LEEMSat-I: Payload Contest for a fully student CubeSat" from Janaury 21, 2009.


Delfi-C3 Mission Results And Delfi-N3xt Progress, Jasper Bouwmeester Jan 2009

Delfi-C3 Mission Results And Delfi-N3xt Progress, Jasper Bouwmeester

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Jasper Bouwmeester titled "Delfi-C3 Mission Results and Delfi-n3Xt Progress" from January 21, 2009.


Space Debris Detection On Cubesats, Tobias Rad Jan 2009

Space Debris Detection On Cubesats, Tobias Rad

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Tobias Rad titled "Space debris detection on CubeSats" from January 21, 2009.


An Overview Of The Microsystem-Based Nanospacecraft Neomex Strawman Theme Within The Trp Activities 2008-2010, J. Kohler Jan 2009

An Overview Of The Microsystem-Based Nanospacecraft Neomex Strawman Theme Within The Trp Activities 2008-2010, J. Kohler

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by J. Kohler titled "An overview of the microsystem-based nanospacecraft NEOMEx strawman theme within the TRP activities 2008-2010" from January 20, 2009.


Status Of Unicubesat, Filippo Graziana, Fabio Santoni, Fabrizio Piergentili, Maria Libera Battagliere, Francesco Guarducci, Fabrizio Paolillo, Luigi Ridolfi, Chantal Cappelletti Jan 2009

Status Of Unicubesat, Filippo Graziana, Fabio Santoni, Fabrizio Piergentili, Maria Libera Battagliere, Francesco Guarducci, Fabrizio Paolillo, Luigi Ridolfi, Chantal Cappelletti

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Filippo Graziani, Fabio Santoni, Fabrizio Piergentili, Maria Libera Battagliere, Francesco Guarducci, Fabrizio Paolillo, Luigi Ridolfi, and Chantal Cappelletti titled "Status of UniCubeSat" from January 20, 2009.


Status Of ‘Pw-Sat’, Andrzej Kotarski, Marcin Dobrowolski, Rafal Graczyk, Marcin Stolarski, Krzysztof Kurek Jan 2009

Status Of ‘Pw-Sat’, Andrzej Kotarski, Marcin Dobrowolski, Rafal Graczyk, Marcin Stolarski, Krzysztof Kurek

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Andrzej Kotarski, Marcin Dobrowolski, Rafal Graczyk, Marcin Stolarski, and Krzysztof Kurek titled "Status of PW-Sat" from January 20, 2009.