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Articles 601 - 630 of 852

Full-Text Articles in Aerospace Engineering

The Revolution In Space By University Students, Robert J. Twiggs Oct 2008

The Revolution In Space By University Students, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The Revolution in Space by University Students" from October 21, 2008.


Arliss-M Design Guide Version 1.1, Robert J. Twiggs Jun 2008

Arliss-M Design Guide Version 1.1, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A design guide for the ARLISS-M published on June 9, 2008.


Cfd As Applied To The Design Of Short Takeoff And Landing Vehicles Using Circulation Control, Tyler M. Ball Jun 2008

Cfd As Applied To The Design Of Short Takeoff And Landing Vehicles Using Circulation Control, Tyler M. Ball

Master's Theses

The ability to predict the distance required for an aircraft to takeoff is an essential component of aircraft design. It involves aspects related to each of the major aircraft systems: aerodynamics, propulsion, configuration, structures, and stability and control. For an aircraft designed for short takeoffs and landings (STOL), designing the aircraft to provide a short takeoff distance, or more precisely the balanced field length (BFL), often leads to the use of a powered lift technique such as circulation control (CC). Although CC has been around for many years, it has never been used on a production aircraft. This is in …


Operationally Responsive Space (Ors): An Architecture And Enterprise Model For Adaptive Integration, Test And Logistics, Jeff A. Alexander, Martha Charles-Vickers, Talbot L. Smith, Michael L. Vickers Jun 2008

Operationally Responsive Space (Ors): An Architecture And Enterprise Model For Adaptive Integration, Test And Logistics, Jeff A. Alexander, Martha Charles-Vickers, Talbot L. Smith, Michael L. Vickers

Theses and Dissertations

The capability to rapidly deploy tactical satellites to meet a Joint Force Commander's immediate battlespace requirements is a well-documented joint capability need. Key U.S. strategic documentation cites the need for the capability to maintain persistent surveillance or an "unblinking eye" over battlespace and to rapidly reconstitute critical space capabilities to preserve situational awareness. The warfighter requires a tactical space-based deployment capability which employs a request to launch and operational deployment window of 90 to 120 days. This master's thesis executed two (2) major areas of work: apply, and reinforce the Operationally Responsive Space (ORS) mission tasks using the Joint Capabilities …


The Role Of Space In Education: Pajaro High School, Robert J. Twiggs May 2008

The Role Of Space In Education: Pajaro High School, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The Role of Space In Education: Pajaro High School" from May 15, 2008.


The Cubesat Role In New Science And Commercial Applications: International Workshop On Small Satellite, New Missions And New Technologies, Robert J. Twiggs May 2008

The Cubesat Role In New Science And Commercial Applications: International Workshop On Small Satellite, New Missions And New Technologies, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "The CubeSat Role in new Science and Commercial Applications: International Workshop on Small Satellite, New Missions and New Technologies" from June 6, 2008.


Educational Outreach In The Arctic Regions?, Robert J. Twiggs Apr 2008

Educational Outreach In The Arctic Regions?, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Educational Outreach in the Arctic Regions?" from April 24, 2008.


Mission Results For Sapphire, A Student-Built Satellite, Michael Swartwout, Christopher Kitts, Robert J. Twiggs, Thomas Kenny, Billy Ray Smith, Rick Lu, Kevin Stattenfield, Freddy Pranajaya Mar 2008

Mission Results For Sapphire, A Student-Built Satellite, Michael Swartwout, Christopher Kitts, Robert J. Twiggs, Thomas Kenny, Billy Ray Smith, Rick Lu, Kevin Stattenfield, Freddy Pranajaya

Robert "Bob" Twiggs STEM Education Collection

A article published in the Journal of the International Academy of Astronautics titled "Mission results for Sapphire, a student-built satellite" published on March 7, 2008.


Space - A Place To Learn & Play: Astrobiology, Robert J. Twiggs Feb 2008

Space - A Place To Learn & Play: Astrobiology, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Space - A Place to Learn & Play: Astrobiology" from February 19, 2008.


Cricket Satellite Project: Hall Elementary School, Robert J. Twiggs Feb 2008

Cricket Satellite Project: Hall Elementary School, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Cricket Satellite Project: Hall Elementary School" from February 18, 2008.


Educating The Workforce Of The Future, Robert J. Twiggs Nov 2007

Educating The Workforce Of The Future, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Educating the Workforce of the Future" from November 5, 2007.


Nasa - Basics Of Space Flight, Nasa Sep 2007

Nasa - Basics Of Space Flight, Nasa

Robert "Bob" Twiggs STEM Education Collection

NASA website titled "Basics of Space Flight" from September 9, 2007.


3.3 Space Control In The Classroom, Robert J. Twiggs Sep 2007

3.3 Space Control In The Classroom, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "3.3 Space Control in the Classroom" from September 6, 2007.


Where Do We Get The Next Generations Of Space Engineers & Scientists?, Robert J. Twiggs Aug 2007

Where Do We Get The Next Generations Of Space Engineers & Scientists?, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Where do we get the Next Generations Of Space Engineers & Scientists?" from August 13, 2007.


Asmo American Student Moon Orbiter, Robert J. Twiggs, Yvonne Clearwater Aug 2007

Asmo American Student Moon Orbiter, Robert J. Twiggs, Yvonne Clearwater

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professors Bob Twiggs and Yvonne Clearwater  titled "ASMO American Student Moon Orbiter" from August 11, 2007.


Using Student Space Assets For Atmospheric Science Research: Cedr Small Satellite Workshop, Robert J. Twiggs Jun 2007

Using Student Space Assets For Atmospheric Science Research: Cedr Small Satellite Workshop, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Using Student Space Assets For Atmospheric Science Research: CEDR Small Satellite Workshop" from June 27, 2007.


Using Student Space Assets For Atmospheric Science Research, Robert J. Twiggs May 2007

Using Student Space Assets For Atmospheric Science Research, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Using Student Space Assets For Atmospheric Science Research" from May 17, 2007.


The Emerging Small Satellite Industry And Opportunities For Education, Robert J. Twiggs May 2007

The Emerging Small Satellite Industry And Opportunities For Education, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "The Emerging Small Satellite Industry and Opportunities for Education" from May 3, 2007.


Optimization Of Zero Net-Mass Flow Actuators For Aero-Optics Applications, Moira L. Denatale, Jonathan M. Mihaly May 2007

Optimization Of Zero Net-Mass Flow Actuators For Aero-Optics Applications, Moira L. Denatale, Jonathan M. Mihaly

Renée Crown University Honors Thesis Projects - All

Using experimental methods, zero net-mass flow actuators were optimized to manipulate flow around an airborne laser turret in order to reduce destructive aero-optics effects. Synthetic jets are created by 50 mm and 27 mm piezoelectric disk actuators. Our optimization process involved identifying an actuator’s cavity size, driving frequency, and amplitude to achieve the strongest, most consistent jet possible. The effects of driving a single actuator versus driving two actuators in or out of phase with one another were also investigated. An initial cavity depth was determined using the Helmholtz resonator cavity approximation which estimates the ideal cavity depth for a …


Launch And Field Operations Without Leaving Your Office And Cubesat Test Opportunities, Robert J. Twiggs Apr 2007

Launch And Field Operations Without Leaving Your Office And Cubesat Test Opportunities, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint presentation created by Professor Bob Twiggs titled "Launch and Field Operations without leaving your Office and CubeSat Test Opportunities" from April 19, 2007.


Biolaunch, James Cutler Mar 2007

Biolaunch, James Cutler

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by James Cutler titled "BioLaunch" from March 23, 2007.


Biolaunch: Ssdl Astrobiology Initiative High-Altitude Balloons And Nanosatellites, Stanford University, Space And Systems Development Laboratory Mar 2007

Biolaunch: Ssdl Astrobiology Initiative High-Altitude Balloons And Nanosatellites, Stanford University, Space And Systems Development Laboratory

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by the Stanford University, Space and Systems Development Laboratory  titled "BioLaunch: SSDL Astrobiology Initiative High-Altitude Balloons and NanoSatellites" from March 13, 2007.


Biolaunch: Ssdl/Astrobiology Initiative High-Altitude Balloons And Picosatellites, Stanford University, Space And Systems Development Laboratory Mar 2007

Biolaunch: Ssdl/Astrobiology Initiative High-Altitude Balloons And Picosatellites, Stanford University, Space And Systems Development Laboratory

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by the Stanford University, Space and Systems Development Laboratory titled "BioLaunch: SSDL/Astrobiology Initiative High-Altitude Balloons and PicoSatellites" from March 13, 2007.


Toward A Flying Mems Robot, Nathan E. Glauvitz Mar 2007

Toward A Flying Mems Robot, Nathan E. Glauvitz

Theses and Dissertations

The work in this thesis includes the design, modeling, and testing of motors and rotor blades to be used on a millimeter-scale helicopter style flying micro air vehicle (MAV). Three different types of motor designs were developed and tested, which included circular scratch drives, electrostatic motors, and comb drive resonators. Six different rotor designs were tested; five used residual stress while one design used photoresist to act as a hinge to achieve rotor blade deflection. Two key parameters of performance were used to evaluate the motor and rotor blade designs: the frequency of motor rotation and the angle of deflection …


Black Rock Planet: The Next Two Challenges, Robert J. Twiggs Feb 2007

Black Rock Planet: The Next Two Challenges, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Black Rock Planet: The Next Two Challenges" from February 22, 2007.


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.


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.


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.


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.


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.