Aeronautical Vehicles Commons^™

Current Design - Structure And Layout, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Current Design - Structure and Layout" from November 30, 1999.

Opal Press Release: October 28, 1999, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A press release written by Professor Bob Twiggs titled "Opal Press Release: October 28, 1999."

Opal Microsatellite, Greg Hutchins

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Greg Hutchins on the "OPAL Microsatellite" from October 8, 1999.

Student Space Program: Stanford University, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Student Space Program: Stanford University" from October 3, 1999.

Darpa Mems Demonstration In Systems Of Dod Relevance, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "DARPA MEMS Demonstration in Systems of DoD Relevance" from October of 1999.

Long-Term Aircraft Structural Integrity Prediction Under The Influence Of Feedback Control, Si-Bok Yu

Mechanical & Aerospace Engineering Theses & Dissertations

This thesis investigates the influence of feedback control, and other factors associated with loading characteristics, on fatigue damage reduction and long-term integrity of aircraft structural components. An actively controlled flexible aircraft model and a new state space modeling procedure for crack growth are utilized to uncover important factors which influence airframe crack growth. A matrix of simulation test cases is constructed to cover such variables as open-loop operation, nominal closed-loop operation, perturbed closed-loop operation (i.e., feedback gain variation), nominal maneuver profile, perturbed maneuver profile (including overload strength and frequency), atmospheric gust, and mean stress level. Simulation output data including crack …

Microsatellite And Formation Flying Technologies On University Nanosatellites, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A published article that included Professor Bob Twiggs as an author titled "Microsatellite and Formation Flying Technologies on University Nanosatellites" from September 28, 1999.

Arliss: Student Payload Rocket Launch, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A report believed to have been written by Professor Bob Twiggs on the "Student Payload Rocket Launch" from September 10-11, 1999.

University Nanosatellite Distributed Satellite Capabilities To Support Techsat 21, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A published article that included Professor Bob Twiggs titled "University Nanosatellite Distributed Satellite Capabilities to Support TechSat 21" from August 23, 1999.

The Emerald Nanosatellite Mission, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The Emerald Nanosatellite Mission" from July 22, 1999.

Ls-Dyna3d Modeling And Simulation For Uncontained Engine Debris Impact On Fuselage Skins, Robin Eileen Lawson

Mechanical & Aerospace Engineering Theses & Dissertations

Impact and penetration events for uncontained engine debris on fuselage skins are simulated using the LS-DYNA3D finite element analysis code. The LS-DYNA3D code is a nonlinear transient dynamic simulation tool with contact algorithms for impact. A finite element analysis is used to simulate the penetration of aluminum plates impacted by titanium impactors on aircraft-like skin panels. By gaining a more comprehensive understanding of this dynamic impact event, this work is meant to contribute to improving designs for damage tolerance and residual strength by providing modeling and analysis guidelines for the analyst.

Parametric studies are performed to determine the influence of …

Emerald & Orion Formation Flying Experiment, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Emerald & Orion Formation Flying Experiment" from May 5, 1999.

Student Micro/Nano Space Applications, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Student Micro/Nano Space Applications" from April 15, 1999.

Orion Pdr: Ssdl Program Overview, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Orion PDR SSDL Program Overview" from April 9, 1999.

Joint Space Systems Operations Program, Robert J. Twiggs, Billy Smith

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs and Lt. Colonel Billy Smith on the "Joint Space Systems Operations Program" from February 8, 1999.

Opal Picosatellite Launcher, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "OPAL Picosatellite Launcher" from February 3, 1999.

Opal Launch Opportunity, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "OPAL Launch Opportunity" from February 3, 1999.

Emerald: A Low-Cost Spacecraft Mission For Validating Formation Flying Technologies, Robert J. Twiggs, Chris Kitts, Jon How

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs, Chris Kitts, and Jon How titled "EMERALD: A Low-Cost Spacecraft Mission for Validating Formation Flying Technologies" from January 19, 1999.

Emerald: A Low Cost Spacecraft Mission For Validating Formation Flying Technologies, Robert J. Twiggs, Jonathan How, Freddy Pranajaya, Bryan Palmintier

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs, Robert Twiggs, Jonathon How, Freddy Pranajaya, and Bryan Palmintier titled "EMERALD: A Low Cost Spacecraft Mission for Validating Formation Flying Technologies" from 1999.

Emerald: University Built Satellite Extending Communications Experimentation For The Amateur Community, Robert J. Twiggs, Freddy Pranajaya

Robert "Bob" Twiggs STEM Education Collection

A published report by Bob Twiggs and Freddy Pranajaya titled "Emerald: University Built Satellite Extending Communications Experimentation for the Amateur Community" from 1999.

Opal: 2nd Ssdl Microsatellite, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "OPAL: 2nd SSDL Microsatellite" from 1999.

Space Systems Development Laboratory, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Space Systems Development Laboratory" from 1999.

Space Systems Development Laboratory: Teach Systems Engineering, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Space Systems Development Laboratory: Teach Systems Engineering" from 1999.

Emerald: Mission Statement, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

The mission statement for the EMERALD Project from 1999.

Opal: A First Generation Microsatellite That Provides Picosat Communications For The Amateur Radio Community, Robert J. Twiggs, James Cutler, Greg Hutchinson, Jeffrey Williams

Robert "Bob" Twiggs STEM Education Collection

A research article written by Bob Twiggs, James Cutler, Greg Hutchinson, and Jeff Williams and published in 1999.

Opal: Project Objectives & Development, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

Project and development objectives for the OPAL Project from 1999.

Opal Update, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "OPAL Update" from 1999.