Open Access. Powered by Scholars. Published by Universities.®

Aerospace Engineering Commons™

Open Access. Powered by Scholars. Published by Universities.®

Space Vehicles

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1471 - 1500 of 1867

Full-Text Articles in Aerospace Engineering

Coupling Of Fluid & Solid Thermal Models To Correct Heat Flux Measurements Taken On Launch Vehicles, Danielle M. Ford Dec 2006

Coupling Of Fluid & Solid Thermal Models To Correct Heat Flux Measurements Taken On Launch Vehicles, Danielle M. Ford

Master's Theses - Daytona Beach

Knowledge of aerothermally induced convective heat transfer and plume induced radiative heat transfer loads is essential to the design of thermal protection systems (TPS) for launch vehicles. These loads are measured via the cylindrical heat flux gauges that are flush mounted with the outer surface of a launch vehicle and are exposed to the in-flight external thermal and velocity boundary layers as well as thermal radiation. Typically, Schmidt-Boelter gauges measure the incident heat flux based on the one-Dimensional Fourier's law. This instrumentation, when surrounded by low-conductivity insulation, has an exposed surface temperature significantly lower than the insulation. A substantial disturbance …

Go to article

Experience Black Rock, Robert J. Twiggs Nov 2006

Experience Black Rock, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "Experience Black Rock" from November 26, 2006.

Go to article

Arliss 2006: Soka University Rover Team Rocks, Soka University Rover Team Nov 2006

Arliss 2006: Soka University Rover Team Rocks, Soka University Rover Team

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Soka University Rover Team titled "ARLISS 2006: Soka University Rover Team ROCKS" from November 26, 2006.

Go to article

Rideshare Conference, Robert J. Twiggs Oct 2006

Rideshare Conference, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "RideShare Conference" from October 11, 2006.

Go to article

A New Approach To Satellite Power Systems, Robert J. Twiggs Oct 2006

A New Approach To Satellite Power Systems, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "A New Approach To Satellite Power Systems" from October 8, 2006.

Go to article

Suitsat-2, Lou Mcfadin, Frank Bauer Oct 2006

Suitsat-2, Lou Mcfadin, Frank Bauer

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Lou McFadin and Frank Bauer titled "SuitSat-2" from October 8, 2006.

Go to article

Stanford University’S Small Satellite Program: Amsat Space Symposium, Robert J. Twiggs Oct 2006

Stanford University’S Small Satellite Program: Amsat Space Symposium, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Stanford University’s Small Satellite Program: AMSAT Space Symposium" from October 7, 2006.

Go to article

T. I. Tech Arliss Team: Spopovic, Tokyo Insititute Of Technology Arliss Team Sep 2006

T. I. Tech Arliss Team: Spopovic, Tokyo Insititute Of Technology Arliss Team

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Tokyo Insititute of Technology ARLISS Team titled "T. I. Tech ARLISS Team: Spopovic" from September 23, 2006.

Go to article

Come-Back Competition: 2006 Summary, Robert J. Twiggs Sep 2006

Come-Back Competition: 2006 Summary, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "Come-Back Competition: 2006 Summary" from September 23, 2006.

Go to article

Arliss 2006 Cansat: Da Vinci, Matsunaga Lab, Tokyo Institute Of Technology Sep 2006

Arliss 2006 Cansat: Da Vinci, Matsunaga Lab, Tokyo Institute Of Technology

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Matsunaga Lab of Tokyo Institute of Technology titled "ARLISS 2006 CanSat: Da Vinci" from September 23, 2006.

Go to article

Arliss 2006 Report, Tohoku University Sekiguteam Sep 2006

Arliss 2006 Report, Tohoku University Sekiguteam

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Tohoku University Sekiguteam  titled "ARLISS 2006 Report" from September 23, 2006.

Go to article

Arliss 2006: University Of Tokyo & Seoul National University, Team Snut Sep 2006

Arliss 2006: University Of Tokyo & Seoul National University, Team Snut

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created Team SNUT titled "ARLISS 2006: University of Tokyo & Seoul National University" from September 23, 2006.

Go to article

Samurai, University Of Tokyo Rover Team Sep 2006

Samurai, University Of Tokyo Rover Team

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the University of Tokyo Rover Team titled "Samurai" from September 23, 2006.

Go to article

Cbc-03: Nihon University, Yuta Chiba, Yuta Kujira Sep 2006

Cbc-03: Nihon University, Yuta Chiba, Yuta Kujira

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Yuta Chiba and Yuta Kujira titled "CBC-03: Nihon University" from September 23, 2006.

Go to article

Airsat Project: Design And Construction Of An Autonomous Atmospheric Probe, Jornados De Jovenes Cientificos Sep 2006

Airsat Project: Design And Construction Of An Autonomous Atmospheric Probe, Jornados De Jovenes Cientificos

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Jornadas de Jóvenes Científicos titled "AIRSat Project: Design and construction of an autonomous atmospheric probe" from September 23, 2006.

Go to article

Arliss 2006: Comeback Competition Report, Tohoku University Yashago Team Sep 2006

Arliss 2006: Comeback Competition Report, Tohoku University Yashago Team

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Tohoku University Yashago Team titled "ARLISS 2006: Comeback Competition Report" from September 22, 2006.

Go to article

Result Of Arliss "Coolrunning Ver. 3", Osamu Kitagawara, Yusuke Saisoh Sep 2006

Result Of Arliss "Coolrunning Ver. 3", Osamu Kitagawara, Yusuke Saisoh

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Osamu Kitagawara and Yusuke Saison titled "Result of ARLISS CoolRunning Ver. 3" from September 22, 2006.

Go to article

Aoyama Gakuin University: I Can Fly, Kuninori Togai, Satoshi Adachi, Naoki Kitabayashi Sep 2006

Aoyama Gakuin University: I Can Fly, Kuninori Togai, Satoshi Adachi, Naoki Kitabayashi

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by the Aoyama Gakuin University Space Club on September 22, 2006.

Go to article

Mavericks & 2007 International Civilian Space Competition, Thomas M. Atchison Sep 2006

Mavericks & 2007 International Civilian Space Competition, Thomas M. Atchison

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Thomas M. Atchison titled "Mavericks & 2007 International Civilian Space Competition" from September 22, 2006.

Go to article

Lightweight In-Plane Actuated Deformable Mirrors For Space Telescopes, Michael J. Shepherd Sep 2006

Lightweight In-Plane Actuated Deformable Mirrors For Space Telescopes, Michael J. Shepherd

Theses and Dissertations

This research focused on lightweight, in-plane actuated, deformable mirrors, with the ultimate goal of developing a 20- meter light gathering aperture for space telescopes. The 0.127 meter diameter deformable mirror small scale testbed was modelled infinite elements using MSC.Nastran software and then used as a basis for a quasi-static controller. Experimental tracking of Zernike tip, tilt, and defocus modes was accomplished. The analytical solutions to plate-membrane and beam-string ordinary differential equations were developed. A simplified approach to modelling the axisymmetric cases was also presented. A novel static control strategy, the Modal Transformation Method, was developed to form Zernike surfaces within …

Go to article

Dynamics And Control Of Tethered Satellite Formations For The Purpose Of Space-Based Remote Sensing, Kurt A. Vogel Sep 2006

Dynamics And Control Of Tethered Satellite Formations For The Purpose Of Space-Based Remote Sensing, Kurt A. Vogel

Theses and Dissertations

This dissertation assesses the utility of tethered satellite formations for the space-based remote sensing mission. Energy dissipation is found to have an adverse effect on foundational rigid body (Likins-Pringle) equilibria. It is shown that a continuously earth-facing equilibrium condition for a fixed-length tethered system does not exist since the spin rate required for the proper precession would not be high enough to maintain tether tension. The range of required spin rates for steady-spin motion is numerically defined here, but none of these conditions can meet the continuously earth-facing criteria. Of particular note is the discovery that applying certain rigid body …

Go to article

Dual Fine Tracking Control Of A Satellite Laser Communication Uplink, Louis A. Noble Sep 2006

Dual Fine Tracking Control Of A Satellite Laser Communication Uplink, Louis A. Noble

Theses and Dissertations

A dual fine tracking control system (FTCS) is developed for a single aperture optical communication receiver to compensate for high frequency disturbances affecting tracking of two incident laser communication beams. The optical communication receiver resides within a payload module aboard a geosynchronous satellite, while each laser communication transmitter is housed within a module aboard a high altitude unmanned aerial vehicle (UAV). In addition to platform specific disturbances, the impact of atmospheric optical disturbances affecting tracking error are investigated. The system dynamics and FTCS are modeled and evaluated in MATLAB and SIMULINK. An optimal controller is developed to mitigate these disturbances …

Go to article

Structural Analysis Of The Rigidizable Inflatable Get-Away-Special Experiment, Anna E. Gunn-Golkin Sep 2006

Structural Analysis Of The Rigidizable Inflatable Get-Away-Special Experiment, Anna E. Gunn-Golkin

Theses and Dissertations

The purpose of this research was to validate the structural integrity of the Rigidizable Inflatable Get-Away-Special Experiment (RIGEX) and make appropriate improvements to the design, motivated by static and dynamic analysis results. RIGEX is designed to advance the use of rigidizable inflatable structures in the space environment by providing three sets of on-orbit test data on the structural characteristics of three thermoplastic composite tubes. This thesis discusses the RIGEX structural analysis. The term structural analysis refers to the development of a detailed finite element model and the tests for which the model was used. The finite element model provided an …

Go to article

Parameter Estimation Of Spacecraft Fuel Slosh Using Pendulum Analogs, Keith L. Schlee Jul 2006

Parameter Estimation Of Spacecraft Fuel Slosh Using Pendulum Analogs, Keith L. Schlee

Master's Theses - Daytona Beach

The nutation (wobble) of a spinning spacecraft in the presence of energy dissipation is a well-known problem in dynamics and is of particular concern for space missions. Its rate of growth is characterized by the Nutation Time Constant (NTC). For analytical prediction of the NTC, fuel slosh is often modeled using simple mechanical analogs such as pendulums or rigid rotors coupled to the spacecraft. Identifying model parameter values which adequately represent the sloshing dynamics is the most important step in obtaining a good NTC estimate. Currently, the identification of the model parameters is a laborious trial-and-error process in which the …

Go to article

Spacecraft Trajectory Design For Short Duration Near Earth Asteroid Missions, Synthia Mirlin Findlay Jul 2006

Spacecraft Trajectory Design For Short Duration Near Earth Asteroid Missions, Synthia Mirlin Findlay

Mechanical & Aerospace Engineering Theses & Dissertations

Design of orbital trajectories using patched conic approximation methodology for short duration missions to newly detected, incoming near Earth asteroids, which are on close approach trajectories with Earth, is the focus of this thesis. The primary purpose for such missions is two fold. First, near Earth asteroids provide unique mission opportunities for solar system science where the celestial body of interest transits to Earth proximity and is studied in situ by probes having short duration trajectories, rather than sending long distance probes to the celestial body. Second, improved characterization of asteroid properties, compositions, and orbital states for reduction of uncertainties …

Go to article

The Determination Of Remaining Satellite Propellant Using Measured Moments Of Inertia, Jason W. Geitgey Jun 2006

The Determination Of Remaining Satellite Propellant Using Measured Moments Of Inertia, Jason W. Geitgey

Theses and Dissertations

This research is designed to demonstrate that a change in satellite propellant can be determined using measured moments of inertia (MOI) from a satellite. Because satellites are currently incapable of being refueled in orbit it is important to have multiple methods to determine the remaining fuel onboard. This research can also support satellite operator selection of control-system gains to improve performance or recover the spacecraft. To meet the research objectives, new mathematical models of the Air Force Institute of Technology's Simulated Satellite (SimSat) were developed. These models were created using dynamic response analysis techniques on the reaction wheel and SimSat …

Go to article

Development And Validation Of Reentry Simulation Using Matlab, Robert E. Jameson Jr. Jun 2006

Development And Validation Of Reentry Simulation Using Matlab, Robert E. Jameson Jr.

Theses and Dissertations

This research effort develops a program using MATLAB to solve the equations of motion for atmospheric reentry and analyzes the validity of the program for use as a tool to expeditiously predict reentry profiles. The reentry vehicle is modeled as a point mass with constant aerodynamic properties as defined by the user. The equations of motion for reentry are based on the two-body problem. The atmosphere is modeled as a single layer exponentially decreasing in density. The MATLAB program has the ability to derive the initial trajectory conditions from the position and velocity relative to the rotating surface of the …

Go to article

Technology For Exploration, Robert J. Twiggs May 2006

Technology For Exploration, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A published article that included Professor Bob Twiggs titled "Technology for Exploration" from May 12, 2006.

Go to article

Stanford Simulated Mars Lander: Aa 235 –Space Systems Engineering, Robert J. Twiggs, Omari Downey, Pat Kostun, James Mack, Matt Maniscalco, Alan Schoen Apr 2006

Stanford Simulated Mars Lander: Aa 235 –Space Systems Engineering, Robert J. Twiggs, Omari Downey, Pat Kostun, James Mack, Matt Maniscalco, Alan Schoen

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs, Omari Downey, Pat Kostun, James Mack, Matt Maniscalco, and Alan Schoen titled "Stanford Simulated Mars Lander: AA 235 –Space Systems Engineering" from April 5, 2006.

Go to article

Space For Project Based Learning Programs, Robert J. Twiggs Mar 2006

Space For Project Based Learning Programs, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Space for Project Based Learning Programs" from March 24, 2006.

Go to article

First Prev Next Last