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Articles 1051 - 1080 of 8353
Full-Text Articles in Engineering
Solar Eclipse Induced Atmospheric Turbulence Effects On High Altitude Balloons, Fnu Anamika, Denise Buckner, Peter Henson, Jennifer Fowler, Nanette Valentour
Solar Eclipse Induced Atmospheric Turbulence Effects On High Altitude Balloons, Fnu Anamika, Denise Buckner, Peter Henson, Jennifer Fowler, Nanette Valentour
2017 Academic High Altitude Conference
The North Dakota Atmospheric Education Student Initiated Research (ND-AESIR) team launched a balloon during the total solar eclipse in Rexburg, Idaho. After the umbra’s passage, the balloon experienced unexpectedly high levels of atmospheric turbulence. Video footage taken from the payload displays the conditions, and analysis of flight path data models created from the iridium GPS confirm that unusually violent turbulence occurred. These forces caused the key rings holding the bottom of the parachute to the payload train to rip open; the balloon and parachute flew away and the payloads free fell to the surface from an altitude of 68,301 feet. …
Measurement Of Speed Of Sound Profile Using Laaces Balloon, Zhuang Li, Brett Schaefer, Brian Schaefer, William Dever, Tyler Morgan, Matthew Foltz
Measurement Of Speed Of Sound Profile Using Laaces Balloon, Zhuang Li, Brett Schaefer, Brian Schaefer, William Dever, Tyler Morgan, Matthew Foltz
2017 Academic High Altitude Conference
The goal of this mission is to test the speed of sound at different altitudes and ultimately at a maximum height of 100,000 feet (30 km). In conjunction with this testing, environmental parameters including temperature, pressure, and humidity are measured and used to calculate the speed of sound to compare to the measured results. The team constructed the payload “Dorothy” using polystyrene foam due to its lightweight and thermal isolation property. An ultrasonic sensor with a reflection mirror were installed outside payload box to measure speed of sound. All the sensors were calibrated. Software for the project was developed in …
How Iridium Satellite Tracker Model 9602-Lp Asset Affects Span Of Control In High Altitidue Balloning, Steven Hamby
How Iridium Satellite Tracker Model 9602-Lp Asset Affects Span Of Control In High Altitidue Balloning, Steven Hamby
2017 Academic High Altitude Conference
The Irdium Satelitte Network has greatly increased safety in the ballooning field by enabling a greater span of control in flight awarness and termination. This enhanced awareness stems from accurate high interval GPS coordinates that can be integrated into ground station tracking software. The Iridium Network creates the ability to send activation commands remotely with high reliabilty using emails. Additionally this feature has the ability to use local rf transmiters and recievers to increase the flexibilty of cutdown designs. The Iridium Modems provides significant coverage regardless of altitude and loss of ground communication. It is marketed at econmical price point …
Multiple Camera Control Using An Octaplexer In A 5.8 Ghz Video System, Uciel Garcia Olmedo, Skylar Tamke
Multiple Camera Control Using An Octaplexer In A 5.8 Ghz Video System, Uciel Garcia Olmedo, Skylar Tamke
2017 Academic High Altitude Conference
One of the greatest challenges with camera systems on High-Altitude Balloons (HAB) is to control the direction that they point. This is because the payload boxes constantly rotate during the flight. While mechanical gambles are normally used, an electronic gambled was designed using multiple cameras and a series of multiplexers. The design consists of 8 version 1 pi cameras, connected through a series of multiplexers and interfacing with an IMU to tell the direction the cameras are facing. This design attaches to the Raspberry Pi through the GPIO pins. The multiplexers turn on the camera facing the orientation desired and …
Ground Station Tracking System, Garret Hilton, Carter Mciver, Steven Hamby, Trevor Gahl, Casey Coffman, David Schwehr
Ground Station Tracking System, Garret Hilton, Carter Mciver, Steven Hamby, Trevor Gahl, Casey Coffman, David Schwehr
2017 Academic High Altitude Conference
One of the Eclipse Ballooning Project’s main goals was to stream live video of the eclipse to the internet. To accomplish this task a tracking antenna was built to follow the balloon payload. As an added challenge, the task had to be completed on a budget. The “ground station” is the center for communication between the payload and user. This system utilizes GPS position reports from the payload via the iridium network to determine the balloons position. The computer algorithm takes in additional GPS and IMU data from the ground station to determine a relative heading to orientate the antenna …
High Altitude Balloon Flight Predictions, Sara Stafford
High Altitude Balloon Flight Predictions, Sara Stafford
2017 Academic High Altitude Conference
The ability to make accurate predictions of a high altitude balloon’s flight trajectory is critical for safety, protection of sensitive payloads, and ease of payload recovery. Several free software programs and websites are available which make predictions straightforward and yield acceptable results. Additional resources are presented which help evaluate the stability of the projected flight track. The various methods of prediction will be described and results compared with actual flight data.
2017 Eclipse Rfd-900 Still Image System, Tristan Running Crane, Uciel Garcia Olmedo, David Schwehr
2017 Eclipse Rfd-900 Still Image System, Tristan Running Crane, Uciel Garcia Olmedo, David Schwehr
2017 Academic High Altitude Conference
As part of the NASA Space Grant 2017 Eclipse Ballooning Project, Montana Space Grant Consortium designed a camera system capable of transmitting still images from a balloon borne payload to a remote ground station via a RFD-900 radio. This payload consists of a Raspberry Pi, a Raspberry Pi camera, custom power supply and a RFD 900MHz radio. This system was designed to record pictures at high and low resolution at altitude. The low resolution images could be selected for downlinking back to the ground via the radio, while the high resolution pictures were saved to the Raspberry Pi memory card. …
Controlled Heading Automation Device, Robert Coulson
Controlled Heading Automation Device, Robert Coulson
2017 Academic High Altitude Conference
One of the most significant limitations of weather balloon-based data collection is that instruments and payloads cannot depend on particular orientations or predictable rotation. Several investigators have used payload heading control devices to overcome this limitation in order to collect directional data and record motion controlled video footage. The work described in this presentation builds on the Controlled Heading Automation Device (CHAD) developed by Kruger et al. (2016) and was carried out at DePaul University in summer 2017 as an undergraduate research project. Our goal was to record stable video of the shadow of the moon on Earth’s surface during …
University Of Maine High Altitude Ballooning Eclipse Experience, Kent Seneres, Derek Haas, William Bessette, Richard Eason
University Of Maine High Altitude Ballooning Eclipse Experience, Kent Seneres, Derek Haas, William Bessette, Richard Eason
2017 Academic High Altitude Conference
The University of Maine High Altitude Ballooning (UMHAB) team launched two balloons during the August 21, 2017 total solar eclipse, producing a consistent online video stream of the eclipse to an altitude of 110,000 feet. This paper discusses the key factors that lead to a successful launch and recovery, such as thorough testing procedures, redesign of components, choice of launch site, and a touch of luck. In preparation for the event, the team tested the equipment and code over eleven balloon launches. Airplane based testing and land testing were conducted for the tracking and video stream components. The payloads and …
Placing A High-Altitude Balloon In The Path Of Totality, Nicholas Jordan, Christopher Helmerich
Placing A High-Altitude Balloon In The Path Of Totality, Nicholas Jordan, Christopher Helmerich
2017 Academic High Altitude Conference
The UAH Space Hardware Club had conducted 70 flights prior to the Eclipse. In this time, we have gained valuable skills and experience which we have put into practice and passed on through the years. We put these skills into practice for the Eclipse. Our first challenge was finding where to launch. We started out by looking for suitable locations inside totality. We also examined a map of totality at 80,000 ft. We then ran predictions based on past weather during that time of year. By compiling multiple past predictions, we eliminated possible launch sites. We had multiple payloads, some …
Autonomous Solid-State Radiation Detector For Safety Of Aerospace Systems, Levi Davies, Biswajit Ray
Autonomous Solid-State Radiation Detector For Safety Of Aerospace Systems, Levi Davies, Biswajit Ray
Von Braun Symposium Student Posters
No abstract provided.
Experimentation Of Warm Gas Generator Emerging Technologies, Amit Patel
Experimentation Of Warm Gas Generator Emerging Technologies, Amit Patel
Von Braun Symposium Student Posters
No abstract provided.
The Santa Clara, 2017-10-26, Santa Clara University
The Santa Clara, 2017-10-26, Santa Clara University
The Santa Clara
No abstract provided.
Seismic Performance Of Hollow-Core Composite Columns Under Cyclic Loading, Mohanad M. Abdulazeez, Mohamed Elgawady
Seismic Performance Of Hollow-Core Composite Columns Under Cyclic Loading, Mohanad M. Abdulazeez, Mohamed Elgawady
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper experimentally investigates the seismic behavior of a large-scale, hollow-core, fiber-reinforced, polymerconcrete- steel HC-FCS column under cyclic loading. The typical precast HC-FCS member consists of a concrete wall sandwiched between an outer fiber-reinforced polymer (FRP) tube and an inner steel tube. The FRP tube provides continuous confinement for the concrete wall, along the height of the column. The column is inserted into the footing and temporarily supported; then, the footing is cast in place around the column. The seismic performance of the precast HC-FCS columns was assessed and compared with previous experimental work. The compared column had the same …
Electric Charge Capacity And Breakdown Voltage Of Martian Simulant By Using Electro Dynamic Balance, Sakurako Kuba
Electric Charge Capacity And Breakdown Voltage Of Martian Simulant By Using Electro Dynamic Balance, Sakurako Kuba
Von Braun Symposium Student Posters
No abstract provided.
Development Of A User-Friendly System Model And Simulation For An Amateur Liquid-Fueled Rocket, Daniel Corey, Thomas Bennett, Brendan Luke, James Biaglow
Development Of A User-Friendly System Model And Simulation For An Amateur Liquid-Fueled Rocket, Daniel Corey, Thomas Bennett, Brendan Luke, James Biaglow
Von Braun Symposium Student Posters
No abstract provided.
Upgrade Of Prc Spray Facility For Evaluation Of Liquid Injector Technology, Ronak Aj Pereira, Julian Schröder
Upgrade Of Prc Spray Facility For Evaluation Of Liquid Injector Technology, Ronak Aj Pereira, Julian Schröder
Von Braun Symposium Student Posters
No abstract provided.
Diagnosing Failures In Complex Engineered Systems, Jalyn Gariepy
Diagnosing Failures In Complex Engineered Systems, Jalyn Gariepy
Von Braun Symposium Student Posters
No abstract provided.
Evaluating Benefits Of Sysml In Creating Value Models Using Nasa's Nea Scout, Garima Bhatia
Evaluating Benefits Of Sysml In Creating Value Models Using Nasa's Nea Scout, Garima Bhatia
Von Braun Symposium Student Posters
No abstract provided.
New Approach To Improve The Breakdown Strength For Thick Dielectrics: A Theoretical Study, Sijay Huang, Biswajit Ray
New Approach To Improve The Breakdown Strength For Thick Dielectrics: A Theoretical Study, Sijay Huang, Biswajit Ray
Von Braun Symposium Student Posters
No abstract provided.
Development Of A Multistage High-Power Rocket, James Biaglow, Mckynzie Perry, Aaron Hunt
Development Of A Multistage High-Power Rocket, James Biaglow, Mckynzie Perry, Aaron Hunt
Von Braun Symposium Student Posters
No abstract provided.
Uah Propulsion Research Center Rocket Test Capability Upgrade, Daniel A. Jones
Uah Propulsion Research Center Rocket Test Capability Upgrade, Daniel A. Jones
Von Braun Symposium Student Posters
No abstract provided.
Nasa Habitat: Framework For An Analysis Of Preference Communication, Giulia Palma
Nasa Habitat: Framework For An Analysis Of Preference Communication, Giulia Palma
Von Braun Symposium Student Posters
No abstract provided.
Predicting Mechanical Properties Of Lattice Structures, Behzad Bahrami Babamiri
Predicting Mechanical Properties Of Lattice Structures, Behzad Bahrami Babamiri
Von Braun Symposium Student Posters
No abstract provided.
Electrostatic Sail - Tether Deployment Testbed, Davis Hunter
Electrostatic Sail - Tether Deployment Testbed, Davis Hunter
Von Braun Symposium Student Posters
No abstract provided.
Marshall Enriched Storable Oxidizer, R Dalton Hicks
Marshall Enriched Storable Oxidizer, R Dalton Hicks
Von Braun Symposium Student Posters
No abstract provided.
Design And Risk Assessment Of Liftoff Water Rocket System For K-12 Stem Education And Outreach, Alex Christley, Heather Rachford
Design And Risk Assessment Of Liftoff Water Rocket System For K-12 Stem Education And Outreach, Alex Christley, Heather Rachford
Von Braun Symposium Student Posters
No abstract provided.
How Spaceflight Affects The Detachment Of Zinc Whiskers, Kayla Capitan
How Spaceflight Affects The Detachment Of Zinc Whiskers, Kayla Capitan
Von Braun Symposium Student Posters
No abstract provided.
Characterization Of A Microplasma-Based Heaterless, Insertless Cathode, Ryan Gott, Gabriel Xu
Characterization Of A Microplasma-Based Heaterless, Insertless Cathode, Ryan Gott, Gabriel Xu
Von Braun Symposium Student Posters
No abstract provided.
Cylindrical Hall Effect Thruster With 3d Printed Components For Small Satellite Propulsion, Ryota Nakano, Gabriel Xu
Cylindrical Hall Effect Thruster With 3d Printed Components For Small Satellite Propulsion, Ryota Nakano, Gabriel Xu
Von Braun Symposium Student Posters
No abstract provided.