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Space Vehicles

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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 May 2018

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 Mar 2018

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 Mar 2018

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 Oct 2017

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 Oct 2017

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 Sep 2017

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 Sep 2017

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 Sep 2017

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 Aug 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

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 Jul 2017

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 Jul 2017

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 May 2017

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 May 2017

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 Apr 2017

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 Apr 2017

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 Feb 2017

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 Feb 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Jan 2017

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 Dec 2016

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 Nov 2016

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 Oct 2016

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 Oct 2016

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 Oct 2016

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 Oct 2016

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 Oct 2016

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 Sep 2016

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 Sep 2016

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.