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Articles 61 - 90 of 529
Full-Text Articles in Aeronautical Vehicles
Active Permanent Magnet Attitude Control For Cubesats Using Mu-Metal Shielding, Maxwell Martin
Active Permanent Magnet Attitude Control For Cubesats Using Mu-Metal Shielding, Maxwell Martin
Mechanical Engineering Undergraduate Honors Theses
Cube-Satellites (CubeSats) are nanosatellites composed of cube shaped units, each nominally 10cm to a side and around 1kg in mass. Due to their inherent size and weight limitations, it is often impractical to use conventional attitude, or rotational, control methods such as thrusters on these small satellites. Several methods, including magnetorquer rods and small reaction wheels, are often used instead of traditional methods to work around the size and weight limitations. As a new alternative to these methods, a permanent magnet mounted on a rotatable shaft could be used to achieve attitude control. In much the same way that a …
Experimental Investigation Of A New Spiral Wingtip, Naseeb Ahmed Siddiqui, Mohammed Aldheeb, Waqar Asrar, Erwin Sulaeman
Experimental Investigation Of A New Spiral Wingtip, Naseeb Ahmed Siddiqui, Mohammed Aldheeb, Waqar Asrar, Erwin Sulaeman
International Journal of Aviation, Aeronautics, and Aerospace
Experiments on the relative merits and demerits of slotted wingtips mimicking a bird’s primary feathers have been performed. The real emargination length of feather tips, their flexibility and curved shapes during cruise are considered in the present study. The experiments were performed at a Reynolds number of 3.7 x 105 on a symmetric flat plate half wing of aspect ratio 3. Lift, drag and pitching moments were measured using a six component aerodynamic balance. Four different shapes inspired by bird primary feathers have been analysed. The rigid curved tip performed the best increasing the L/D ratio by 20%. This …
Nanosatellite Space Experiment, Robert J. Twiggs
Nanosatellite Space Experiment, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A report written by Professor Bob Twiggs titled "Nanosatellite Space Experiment" from March 30, 2018.
Develop Pucp Microlab For Thinsat, Robert J. Twiggs
Develop Pucp Microlab For Thinsat, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Develop PUCP microlab for ThinSat" from October 17, 2017.
Payloads For Student Thinsat Satellites, Robert J. Twiggs
Payloads For Student Thinsat Satellites, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Payloads for Student ThinSat Satellites" from October 2, 2017.
Students Reaching For The Stars Become The Next Generation Of International Leaders, Robert J. Twiggs
Students Reaching For The Stars Become The Next Generation Of International Leaders, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Students reaching for the stars become the next generation of International Leaders" on September 22, 2017.
Students Reaching For The Stars Become The Next Generation Of International Leaders: Pucp 100 Year Anniversary - Part 1, Robert J. Twiggs
Students Reaching For The Stars Become The Next Generation Of International Leaders: Pucp 100 Year Anniversary - Part 1, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Students reaching for the stars become the next generation of International Leaders: PUCP 100 Year Anniversary" from September 22, 2017.
Students Reaching For The Stars Become The Next Generation Of International Leaders: Pucp 100 Year Anniversary - Part 2, Robert J. Twiggs
Students Reaching For The Stars Become The Next Generation Of International Leaders: Pucp 100 Year Anniversary - Part 2, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Students reaching for the stars become the next generation of International Leaders: PUCP 100 Year Anniversary" from Saptember 22, 2017.
Tu-Pod: A Cube Satellite (Cubesat) And Tube Satellite Dispenser Produced Via 3d Printing, Successful Launch, Orbit And Dispensing Of Two Tube Satellites, Robert J. Twiggs, Matt Craft, Amin Djamshidpour, Chantal Cappelletti, Ken Biba, Stewart Davis
Tu-Pod: A Cube Satellite (Cubesat) And Tube Satellite Dispenser Produced Via 3d Printing, Successful Launch, Orbit And Dispensing Of Two Tube Satellites, Robert J. Twiggs, Matt Craft, Amin Djamshidpour, Chantal Cappelletti, Ken Biba, Stewart Davis
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Matt Craft, Amin Djamshidpour, Chantal Cappelletti, Bob Twiggs, Ken Biba, and Stewart Davis titled "TU-POD: A Cube Satellite (CubeSat) and Tube Satellite Dispenser Produced via 3D Printing, Successful Launch, Orbit and Dispensing of Two Tube Satellites" from August 6, 2017.
Providing A Unique Stem Education Opportunity With A Five-Day Eleo Mission, Robert J. Twiggs
Providing A Unique Stem Education Opportunity With A Five-Day Eleo Mission, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Providing a Unique STEM Education Opportunity with a Five-Day ELEO Mission" from July 18, 2017.
Bringing Space To The Classroom Through Stem Education Providing Extreme Low Earth Orbit Missions Using Thinsats, Robert J. Twiggs
Bringing Space To The Classroom Through Stem Education Providing Extreme Low Earth Orbit Missions Using Thinsats, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
An article written by Bob Twiggs and associates titled "Bringing Space to the Classroom Through STEM Education Providing Extreme Low Earth Orbit Missions Using ThinSats" from July 10, 2017.
Low Cost Missions For The Unordinary Innovators, Robert J. Twiggs
Low Cost Missions For The Unordinary Innovators, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Low Cost Missions for the Unordinary Innovators" from May 23, 2017.
Literature Review: Biomimetic And Conventional Aircraft Wing Tips, Naseeb Ahmed Siddiqui, Waqar Asrar, Erwin Sulaeman
Literature Review: Biomimetic And Conventional Aircraft Wing Tips, Naseeb Ahmed Siddiqui, Waqar Asrar, Erwin Sulaeman
International Journal of Aviation, Aeronautics, and Aerospace
This paper is an attempt to summarize the effect of wing tip devices employed by birds, as well as aeronautical engineers in the past to improve the performance characteristics of aircraft. The focus is on reduction of the induced drag or drag due to lift also known as inviscid drag. This paper will provide an insight on both biomimetic and conventional wing tip approaches to reduce the induced drag. Prior analysis and experiments on the aerodynamics of airplane performance due to both these separate studies have been discussed. The needs of the industry and their past inventions have been described …
Flying Simple Experiments In Space, Robert J. Twiggs
Flying Simple Experiments In Space, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Flying Simple Experiments in Space" from April 28, 2017.
Providing A Unique Stem Education Opportunity With A Five Day Eleomission, Robert J. Twiggs, Amin Djamshidpour, Matt Craft, Dale Nash, Hank Voss
Providing A Unique Stem Education Opportunity With A Five Day Eleomission, Robert J. Twiggs, Amin Djamshidpour, Matt Craft, Dale Nash, Hank Voss
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Robert Twiggs, Amin Djamshidpour, Matt Craft, Dale Nash, and Hank Voss titled "Providing a Unique STEM Education Opportunity with a Five Day ELEOMission" from April 26, 2017.
Decibel Notes, Robert J. Twiggs
Decibel Notes, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A class notes on "Decibel Notes" created by Professor Bob Twiggs on February 27, 2017.
Determining Power For A Cubesat, Robert J. Twiggs
Determining Power For A Cubesat, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Determining Power for a CubeSat" from February 3, 2017.
Reference Slides, Robert J. Twiggs
Reference Slides, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation of "Reference Slides" created by Professor Bob Twiggs from January 18, 2017.
An Exciting Opportunity To Advance Stem Education With Femto-Satellites, Dale Nash
An Exciting Opportunity To Advance Stem Education With Femto-Satellites, Dale Nash
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Dale Nash titled "An Exciting Opportunity to Advance STEM Education with Femto-satellites" from January 16, 2017.
Tu-Pod: Launched From The International Space Station, Amin Djamshidpour, Bob Twiggs
Tu-Pod: Launched From The International Space Station, Amin Djamshidpour, Bob Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs and Amin Djamshidpour titled "TU-POD: Launched from the International Space Station" from January 16, 2017.
Summary Of "Supersonic Jet And Rocket Noise", Kent L. Gee, Caroline P. Lubert, Alan T. Wall, Seiji Tsutsumi
Summary Of "Supersonic Jet And Rocket Noise", Kent L. Gee, Caroline P. Lubert, Alan T. Wall, Seiji Tsutsumi
Department of Mathematics and Statistics - Faculty Scholarship
This paper summarizes a two-part special session, “Supersonic Jet and Rocket Noise,” which was held during the 174th Meeting of the Acoustical Society of America in New Orleans, Louisiana. The sessions were cosponsored by the Noise and Physical Acoustics Technical Committees and consisted of talks by government, academic, and industry researchers from institutions in the United States, Japan, France, and India. The sessions described analytical, computational, and experimental approaches to both fundamental and applied problems on model and full-scale jets and rocket exhaust plumes.
Virginia Space Pocketqube Launch Opportunity, Robert J. Twiggs
Virginia Space Pocketqube Launch Opportunity, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Virginia Space PocketQube Launch Opportunity" from December 1, 2016.
Want To Be A Space Scientist For All Ages?, Robert J. Twiggs
Want To Be A Space Scientist For All Ages?, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs titled "Want to be a Space Scientistfor all ages?" from November 8, 2016.
Balloon Assisted Sounding Rocket Vehicle Concept Study, Benjamin Thompson, Christopher Helmerich, Jared Fuchs, Matthew Haskell, Tate Harriman
Balloon Assisted Sounding Rocket Vehicle Concept Study, Benjamin Thompson, Christopher Helmerich, Jared Fuchs, Matthew Haskell, Tate Harriman
Von Braun Symposium Student Posters
No abstract provided.
Space Systems Overview Of Sse -120 Satellites & Space Systems I, Robert J. Twiggs
Space Systems Overview Of Sse -120 Satellites & Space Systems I, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs on "Space Systems Overview of SSE -120 Satellites & Space Systems I" on October 27, 2016.
Launch Vehicles, Robert J. Twiggs
Launch Vehicles, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint Presentation created by Professor Bob Twiggs on "Launch Vehicles" from October 27, 2016.
Pocketqube: The New Opportunity To Get Into Space, Robert J. Twiggs
Pocketqube: The New Opportunity To Get Into Space, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "PocketQube: The New Opportunity to get into Space" from October 3, 2016.
Pocketqube Opportunity Mission, Robert J. Twiggs
Pocketqube Opportunity Mission, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "PocketQube Opportunity Mission" from October 2, 2016.
Pocketqube Opportunity Mission: Vmo Mission, Robert J. Twiggs
Pocketqube Opportunity Mission: Vmo Mission, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "PocketQube Opportunity Mission: VMO Mission" from September 30, 2016.
Lunar Icecube: Nasa Nextstep Lunar Cubesat Mission, Robert J. Twiggs
Lunar Icecube: Nasa Nextstep Lunar Cubesat Mission, Robert J. Twiggs
Robert "Bob" Twiggs STEM Education Collection
A PowerPoint presentation created by Professor Bob Twiggs titled "Lunar IceCube: NASA NEXTSTEP Lunar CubeSat Mission" from September 29, 2016.