Digital Commons Network^™

Dellingr: Reliability Lessons Learned From On-Orbit, Larry Kepko, Luis Santos Soto, Chuck Clagett, Behnam Azimi, Dean Chai, Alan Cudmore, James Marshall, John Lucas

Small Satellite Conference

Dellingr, NASA Goddard Space Flight Center’s (GSFC) first 6U CubeSat, was deployed from the International Space Station (ISS) on November 20, 2017. The primary objective of the mission was to apply and appropriately tailor GSFC knowledge and capability to design and build a CubeSat that increased resiliency and capability, while containing costs. The Dellingr spacecraft is a mixture of COTS and in-house components and includes two science instruments – an advanced gated time-of-flight ion-neutral mass spectrometer (INMS) and a boom mounted fluxgate. While a traditional GSFC spacecraft approach includes detailed analysis, design, testing, and extensive reviews, the Dellingr team adopted …

"Black Box" Beacon For Mission Success, Insurance, And Debris Mitigation, Hank Voss, Jeff Dailey, Matt Orvis, Art White, Stefan Brandle

Small Satellite Conference

The recent demonstration of the Globalstar network for robust satellite links (Anywhere & Anytime with 24/7 global coverage) permits new ways for improving mission success, improving failure analysis, and accurately tracking orbital debris of inactive satellites 1,2. To date, the Globalstar link has a 100% success rate in orbit with 14 of 14 orbital flights since 2014 verified. The proposed “Black Box” solution for satellites allows for a small and autonomous low-data rate link with key diagnostic information. Even if the subject satellite is partially or completely dead with the small Black Box the attitude, voltages, currents, GPS, temperatures, and …

Inspiresat-1 Nanosat Mission, Ankit Verma, Yi Duann, Spencer Boyajian

Small Satellite Conference

The INSPIRE, International Satellite Program in Research and Education, is a group of six institutes namely Laboratory for Atmospheric and Space Physics (LASP), USA, Indian Institute of Space Science and Technology (IIST), India, National Central University (NCU), Taiwan. Nanyang Technological University (NTU), Singapore, Sultan Qaboos University, Oman, Le Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), France. Three institutions LASP, IIST and NCU are developing the first satellite of the program called the INSPIRESat-1, whose mission details and design are presented in this paper. The paper gives the details of payload, its mode of operations and its interface with other subsystems, Command …

Tsat4: A Modular 3u Cubesat Characterizing Anabaena Cylindrica In Low Earth Orbit, Matthew Driedger, Morgan Taverner, Valorie Platero

Small Satellite Conference

TSAT4 is the fourth iteration of the University of Manitoba Space Applications and Technology Society’s 3U nanosatellite design with a decentralized modular systems architecture that supports a biological payload. The payload tests the effects of exposure to a low earth orbit (LEO) environment on the growth cycle of Anabaena cylindrica bacteria. In addition to providing a potential base tropic layer for more advanced biological experiments, Anabaena cylindrica has shown potential for use in bioreactors for spacecraft life support and food production. As such, detailed characterization of how their lifecycle is affected by the LEO environment will be an important factor …

Guatemala's Remote Sensing Cubesat - Tools And Approaches To Increase The Probability Of Mission Success, Marvin Martínez, Diego González, Diego Rodríguez, Johan Birnie, José Bagur, Ricardo Paz, Emilio Miranda, Fernanda Solórzano

Small Satellite Conference

Universidad del Valle de Guatemala (UVG) is undertaking an undergraduate academic project with a mission to design, develop, and operate a CubeSat-class satellite to test a multispectral sensor prototype, opening the field of space science & technology in Guatemala, developing the country’s human capital, and enabling the independent acquisition of remote sensing data for natural resource management. Throughout the four-year span of this project’s design phase, more than 200 requirements, 70 risks, 220 controlled documents, 150 parts, 330 tasks, and 60 engineering drawings were monitored. Increasing the project complexity, it has to date included over 100 students and volunteers working …

Lessons Learned From Building The First Chilean Nano-Satellite: The Suchai Project, Carlos Gonzalez, Camilo Rojas, Alex Becerra, Javier Rojas, Tomas Opazo, Marcos Diaz

Small Satellite Conference

This work presents the preliminary results and the lessons learned from the operation, thus far, of the Satellite of the University of Chile for Aerospace Investigation (SUCHAI-1), the first CubeSat mission at the University of Chile. The development of the SUCHAI-1 started in 2011 and was launched in June 23rd 2017 in an Indian PSLV Rocket. The launch resulted in a circular polar sun-synchronous orbit at an altitude close to 505 km. The SUCHAI-1 has operated continuously for more than 12 months except for three days after the mid-September 2017 solar storm. The SUCHAI-1 has been studying the capabilities that …

Marco: Early Operations Of The First Cubesats To Mars, Andrew Klesh, Brian Clement, Cody Colley, John Essmiller, Daniel Forgette, Joel Krajewski, Anne Marinan, Tomas Martin-Mur

Small Satellite Conference

The MarCO (Mars Cube One) spacecraft launched with the InSight mission from Vandenburg Airforce Base on May 5, 2018. These spacecraft, the first interplanetary CubeSats, serve as technology demonstrators, supporting the InSight Mars lander. During InSight’s entry, descent, and landing sequence, the MarCO spacecraft will flyby Mars, collecting transmitted data from the lander, and relaying it back to the Deep Space Network (DSN) on Earth. This serves as a demonstrator for the “carry-your-own-relay” concept that might be utilized on more challenging future missions Prior to InSight support, the mission will also demonstrate the capability for a CubeSat sized, DSN compatible …

Meznsat: A Cubesat For Greenhouse Gases Monitoring And Algal Blooms Prediction, Abdul-Halim Jallad, Zulkifli Aziz, Aisha Allam, Prashanth Marpu, Alexandros Tsoupos, Abdulla Marar

Small Satellite Conference

MeznSat is a 3U CubeSat that will carry a Short-Wave Infra-Red (SWIR) spectrometer as its primary payload, with the aim of deriving Carbon Dioxide (CO2) and Methane (CH4) and concentrations in the atmosphere by making observations in the 1000–1650 nm wavelength region. The satellite is planned for launch in the end of 2019. The primary payload is Argus 2000 which is a miniature, low-cost, space-qualified SWIR spectrometer that operates in the SWIR bands and showcases flight heritage. The secondary payload will be an RGB camera with SXGA resolution that will allow post-processing to achieve the high geolocation accuracy required for …

Halosat: A Search For Missing Baryons With A Cubesat, Anna Zajczyk, Philip Kaaret, Donald Kirchner, Daniel Larocca, William Robison, Keith Jahoda, Thomas Johnson, Dimitra Koutroumpa

Small Satellite Conference

No abstract provided.

Reliving 24 Years In The Next 12 Minutes: A Statistical And Personal History Of University-Class Satellites, Michael Swartwout

Small Satellite Conference

In 2018, university-class satellites -- spacecraft built by university students for the express purpose of student training -- are widely accepted as a means to recruit undergraduate students into the space workforce, train them effectively before graduation and retain them in the field after graduation. Hundreds of undergraduates at dozens of schools around the world have directly contributed to missions that operated on-orbit. The spacecraft themselves are capable of performance research-grade science or demonstrate new enabling technologies. This was not always the case. For the first forty years of spaceflight, there were exceedingly few university-class missions; those that flew were …

Helping Students Reach Space: University Nanosatellite Program Challenges And Lessons Learned, Shivani Patel, Jesse Olson, Kate Yoshino, Lee Jasper, Jeffrey Ganley, Lauren Hunt

Small Satellite Conference

The University Nanosatellite Program (UNP) was founded in 1999 as the first government funded program to mentor university students in the design, integration, and operations of small satellites. UNP Employees have assisted in the development of over 80 satellites from a number of universities across the country. This paper presents the lessons learned from UNP's 19-year history of mentoring students in small satellite systems engineering.

Aero: Auroral Emission Radio Observer, Philip Erickson, Geoffrey Crew, Michael Hecht, Mary Knapp, Frank Lind, Ryan Volz, James Labelle, Frank Robey

Small Satellite Conference

Earth’s aurora has a deep complexity and richness that is of intense interest for our understanding of space physics, with many unknown or ill-defined features. Auroral radio emissions in the LF and HF frequency range allow radio remote sensing, leading to investigation of nonlinear wave processes and wave-particle interactions operating in a broad range of heliospheric, planetary and astrophysical plasmas. The Auroral Emission Radio Observer (AERO) is a one-year CubeSat mission in polar orbit that will significantly advance our knowledge by examining radio emissions from the auroral acceleration region in near-Earth space. AERO uses a unique electromagnetic vector sensor (VS) …

The Scintillation Prediction Observations Research Task (Sport): A Spacecraft Development For An International Mission, Luis Loures, Lidia Sato, Mangalathayil Abdu, Valdemir Carrara, Pedro Albuquerque, Hélio Santos, Linélcio Santos, Emerson Oliveira

Small Satellite Conference

No abstract provided.

Single Gps Antenna Attitude Vector Pair - Neossat Recovery, Stuart Eagleson, Viqar Abbasi, Natasha Jackson, Robert Scott, Stefan Thorsteinson

Small Satellite Conference

In flight, the Near Earth Object Surveillance Satellite (NEOSSat) lost use of its single-string magnetometer that was necessary to coarsely solve the attitude problem and seed the satellite's star tracker for fine attitude determination. Unable to determine attitude, satellite control was lost and an ad-hoc, in-flight, solution was needed to recover operations. Building on existing GPS literature, NEOSSat's GPS receiver was augmented, in software, to estimate the antenna's look direction, in an inertial frame of reference. Matched with the known (mounting) vector in the body frame, a vector pair was successfully created that replaced the one from the magnetometer. This …

Model-Based Assurance For Satellites With Commercial Parts In Radiation Environments, Arthur Witulski, Brian Sierawski, Rebekah Austin, Gabor Karsai, Nag Mahadevan, Robert Reed, Ron Schrimpf, Kenneth Label

Small Satellite Conference

Small satellite projects often do not have the budget or schedule to incorporate radiation-hardened parts or extensive radiation test campaigns into their schedule. Yet a case must be made that the spacecraft will function as intended in orbit, with radiation, temperature and vacuum affecting part performance. The Vanderbilt Institute for Space and Defense Electronics, with support from NASA HQ, NASA NEPP, and NASA JPL, has developed a platform for making a safety case for systems with commercial (non-hardened) parts, called the Systems Engineering Assurance and Modeling (SEAM) platform. The platform has three elements: goal structuring notation (GSN), systems engineering models …

Regional Ionosphere Mapping And Autonomous Uplink (Rimau) Satellite Constellation For Space Weather Monitoring And Nowcasting Over Singapore, Amal Chandran, Tzu-Wei Fang, Li Bing-Xuan, Han Bo, Loren Chang, Chi-Kuang Chao

Small Satellite Conference

The Regional Ionosphere Mapping and Autonomous Uplink (RIMAU) mission is a constellation of six CubeSats in an equatorial orbit, making Radio Occultation (RO) measurements of the atmosphere and in-situ Ionospheric measurements to characterize the ionosphere over equatorial South-East Asia in near real time. RIMAU builds on the success of the VELOX-CI mission developed and operated at the Satellite Research Centre (SaRC) at Nanyang Technological University, which carried a commercial-off-the-shelf GPS receiver and have been operating successfully since December 2015. RIMAU will carry GPS receivers for RO and an Ionospheric payload, the Compact Ionosphere Probe (CIP) developed by National Central University …

Adapting Low-Cost Drone Technology To Cubesats For Environmental Monitoring And Management: Harmful Algal Bloom Satellite-1 (Habsat-1), Richard Beck, Hongxing Liu, Richard Johansen, Min Xu, Catharine Mcghan, George Thomas Black, Ou Ma, Uc Cubecats, Molly K. Reif, Erich B. Emery, Richard Stumpf, Greg Emerick, Ryan Nelson

Small Satellite Conference

HABsat-1 is designed to improve our understanding of algal bloom dynamics and their causes on land by addressing several current limiting factors for this application using existing satellites. For example, there is suboptimal imager design for water, insufficient spatial resolution for precise co-registration of surface observations, and too few satellites with such capabilities to defeat cloud cover in maritime, tropical and temperate climates. We will overcome these problems by merging a new low-cost multispectral imaging technology with a low-cost CubeSat bus. CubeSats cost roughly 1/100th to 1/1000th of most current long-life imaging satellites. Such cost decreases are necessary to improve …

Small Satellites Contribute To The United Nations Sustainable Development Goals, Danielle Wood

Small Satellite Conference

The United Nations (UN) led the countries of the world to define and commit to the 2030 Agenda for Sustainable Development, which identifies 17 goals toward improving life on Earth. The Sustainable Development Goals (SDGs) provide the high-priority challenges for our generation in areas such as access to clean water, food security, poverty alleviation, health care, environmental sustainability and urban development. Space technology, including small satellites, can play a role in helping countries pursue the SDGs. Each goal includes a set of Targets countries are working to achieve by 2030. Each Target includes a set of indicators that define the …

Makersat-0: 3d-Printed Polymer Degradation First Data From Orbit, Connor Nogales, Braden Grim, Mitch Kamstra, Benjamin Campbell, Aaron Ewing, Robert Hance, Joshua Griffin, Stephen Parke

Small Satellite Conference

Northwest Nazarene University (NNU) undergraduate engineering students and faculty designed and built Idaho’s first CubeSat, MakerSat-0, which NASA launched into orbit on Nov. 18, 2017 from Vandenberg AFB aboard a Delta II rocket. MakerSat-0 was one of five CubeSats chosen by NASA in 2016 for the ELaNa XIV mission. It is the first in a series of proof-of-concept missions that will demonstrate the advantages of on-orbit manufacturing, assembly, and deployment of CubeSats from the International Space Station (ISS). This project is in collaboration with Made In Space, makers of the ISS 3D printer. For the past nine months, MakerSat-0 has …

Adcs At Scale: Calibrating And Monitoring The Dove Constellation, Lawrence Leung, Vincent Beukelaers, Simone Chesi, Hyosang Yoon, Daniel Walker, Joshua Egbert

Small Satellite Conference

The Attitude Determination and Control System (ADCS) is considered one of the most critical subsystems of a spacecraft, and must be carefully calibrated and monitored to ensure mission success. Many emerging small satellite missions feature large constellations, creating a need for new design philosophies and operational approaches to accommodate the management of many ADCS subsystems simultaneously. Planet currently operates approximately 190 Dove Cubesats for Earth Observation, with only a small team of ADCS engineers and satellite operators responsible for the performance of the entire constellation. Since Planet’s first launches in 2013, on-orbit data and diverse experiences have contributed to the …

Immunogenicity And Protection After Vaccination With A Modified Vaccinia Virus Ankara-Vectored Yellow Fever Vaccine In The Hamster Model, Justin G. Julander, Marco Testori, Cédric Cheminay, Ariane Volkmann

Animal, Dairy, and Veterinary Science Faculty Publications

The highly efficacious live-attenuated 17D yellow fever (YF) vaccine is occasionally associated with rare life-threatening adverse events. Modified vaccinia virus Ankara (MVA), a non-replicating poxvirus, has been used as a vaccine platform to safely deliver various antigens. A MVA-based YF vaccine (MVA-BN-YF) was tested with and without a non-mineral oil adjuvant in a hamster model of lethal YF disease and protective efficacy of this vaccine was compared with the 17D vaccine. The vaccine candidate MVA-BN-YF generated a protective response in hamsters infected with YFV that was comparable to protection by the live 17D vaccine. Similar levels of neutralizing antibody were …

2018 Utah State University Student Orientation Guide, Utah State University

The Utah Statesman

A special supplemental magazine provided by The Utah Statesman to take a closer look at some of the services and departments available at Utah State University.

A Framework For Assessing Natural Lands And Finding Common Ground In The Bear River Range, Scott Mccomb

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Forests, wetlands, grasslands, lakes and deserts make up the natural lands that humans and nature rely on. In the Bear River Range, these lands are becoming smaller and more disconnected due to residential and commercial development, agriculture, energy production and transportation corridors. In addition, natural lands are owned and managed by a variety of groups representing different values, priorities and traditions. For large-scale conservation to be successful, it needs to incorporate multiple priorities. The purpose of this study was to provide a process for identifying the remaining network of natural lands within the Bear River Range that indicate high ecological …

Changing Delay Discounting: Identification And Evaluation Of Ecologically Valid Methods For Reducing Impulsive Choice, Jillian M. Rung

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Impulsivity takes many forms, one of which is termed impulsive choice. Impulsive choice entails preference for an outcome due to its immediacy relative to more optimal outcomes that take longer to come to fruition. For example, one may wish to have another serving of a decadent dessert after dinner—but doing so may undermine a longer-term goal of improved health and nutrition. If having the extra serving becomes a habit, the consequences of that choice compound and may lead to, for example, obesity. A high degree of impulsive choice such as this is indeed related to issues such as obesity, …

A Deep Learning Approach To Recognizing Bees In Video Analysis Of Bee Traffic, Astha Tiwari

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Colony Collapse Disorder (CCD) has been a major threat to bee colonies around the world which affects vital human food crop pollination. The decline in bee population can have tragic consequences, for humans as well as the bees and the ecosystem. Bee health has been a cause of urgent concern for farmers and scientists around the world for at least a decade but a specific cause for the phenomenon has yet to be conclusively identified.

This work uses Artificial Intelligence and Computer Vision approaches to develop and analyze techniques to help in continuous monitoring of bee traffic which will further …

Use Of Verified Twitter Accounts During Crisis Events, Kai Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis reports on the use of verified Twitter accounts during crisis events. Twitter is a social media platform that allows users to broadcast and exchange public text messages and it can be used as a communication tool during crisis events. Verified Twitter accounts are those accounts that Twitter has investigated and found to be genuinely maintained by the claimed owner. Celebrities, public officials, and other well-known persons or companies often seek this account status. The owners of these accounts are likely to provide more accurate or relevant information during a crisis event because they represent a brand, whether themselves …

Biomass And Phycocyanin From Oil And Natural Gas Extraction Produced Water Utilizing A Cyanobacteria Dominated Rotating Algal Biofilm Reactor (Rabr), Jonathan L. Wood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The production of cyanobacterial biofilm biomass and phycocyanin from Rotating Algal Biofilm Reactors utilizing undiluted produced water from oil and natural gas extraction as a culture medium was investigated in this study. Produced water is the largest waste stream generated by the oil and natural gas industries and represents a large volume of non-potable water that may be available for algae culture with minimal impact on freshwater resources. Combining the use of produced wastewater as culture medium with the production of high value algal pigments, such as phycocyanin, may increase the economic viability of algae culture and wastewater purification. High …

Using Social Network Analysis To Examine The Intersection Of Adolescent Friendships And Health Behavior, Emily Long

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adolescence marks a vulnerable developmental period for health behavior, and research demonstrates that social context and interpersonal relationships impact the health behavior choices of adolescents. In addition, theories of adolescent development suggest a bidirectional relationship between environmental factors, including social relationships, and health. Friendships are one of the most salient relationships during adolescence, and new methods from the field of social network analysis allow researchers to explicitly examine the mechanisms through which friends influence health behavior, and simultaneously, how health and health behavior impacts the formation of friendships. Importantly, social network methods (e.g., stochastic actor-based models, exponential random graph models) …

Socioeconomic Status Influence On Mothers’ Interactions With Infants: Contributions To Early Infant Development, Krista L. Gurko

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Children from different socioeconomic backgrounds often have different long-term outcomes in terms of school, language, and emotional wellbeing. At this time, no reasons for these differences have been agreed upon by experts across disciplines. Parents with different personal characteristics and life situations use different types and amounts of interactions with their infants. The social interactions infants experience during their first year of life provide the start of their developmental path in the areas of language and executive control while also guiding their expectations for interactions with people around them.

This study used previously unpublished data from a sample of 79 …

Understanding Plant Secondary Metabolites; Above And Below Ground, Andrea K. Clemensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plants naturally produce primary and secondary metabolites. Primary metabolites are directly involved with plant growth and metabolic function. Plant secondary metabolites (PSM) were once thought of as metabolic waste products, and more recently viewed as toxins to herbivores. However, ongoing research shows that PSM are beneficial to herbivores at low doses, and PSM aid plants by attracting pollinators, recovering from injury, protecting from ultraviolet radiation, increasing drought tolerance, and aid in defense against pathogens, diseases, and herbivores. Plant secondary metabolites also influence soil nutrient cycling, and can increase the sustainability of agroecosystems. Endophyte-infected tall fescue (Festuca arundinacea Schreb.), which …