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TorqMag: Developing a Novel Integration of Magnetic Attitude Control and AC Magnetometry for Small Satellite Platforms
Get PDF➢ Many CubeSats in Earth orbit utilize magnetorquers for attitude control. Simultaneously, AC magnetometry has gained prominence in advancing our understanding of Earth\u27s magnetosphere, including fine-scales in field-aligned currents (FACs). ➢ We propose a novel dual-function subsystem, TorqMag (short for Torquing Magnetometer) integrating a magnetorquer and a search coil sensor to enable both attitude control and high-fidelity AC magnetometry in a single compact package of \u3c 1U. ➢ TorqMag offers significant mass, power, and volume savings for science missions and aims at high-sensitivity detection of magnetic waves (100 Hz–2 kHz) without the need for a deployable boom, while still maintaining sufficient torque authority. ➢ This poster presents the challenges in developing this instrument, as well as the strategies and successes in addressing them. This work is supported by NASA’s H-TIDeS program as part of the HyMag-ADCS project at the University of Michigan
Escape, Plasma and Acceleration Dynamics Explorers (ESCAPADE) – Enabling a Low-Cost Mars Mission
Get PDFThe Escape, Plasma and Acceleration Dynamics Explorers (ESCAPADE) mission will provide a comprehensive picture of how solar wind energy flows through Mars’ unique hybrid magnetosphere to drive ion and sputtering escape. The mission has undergone several transformations to accommodate evolving launch constraints, highlighting its resilience and offering valuable insights for designing low-cost, adaptable Mars missions. This paper describes why and how ESCAPADE has pivoted, how the mission design accommodated the change, and what lessons have been learned. The objective is to illuminate how to design launch resiliency into a low-cost Mars mission
4096-Element Ka-Band Deployable Active Phased Array Transceivers in a 6U CubeSat
No full textThis paper proposes a 4096-element deployable phased-array transceiver for LEO constellations, operating in the Ka-band frequency range. The system is designed for a 6U satellite platform, with the deployable membrane stored within a 2U volume and deploying to form a 670 mm × 670 mm aperture. The antenna features a central active area of 360 mm × 360 mm, with additional regions allocated for heat dissipation. A 7-layer rigid-flex printed circuit board (PCB) is used in the fabrication for the antenna array. A 256-element phased-array antenna was successfully fabricated on this rigid-flex PCB and demonstrates the feasibility of scaling up, paving the way for advanced LEO satellite communication solutions, particularly in 5G/6G networks
Creating Sustainable School and Home Gardens: Using Citizen Science
No full textCitizen science, also called community-based science or participatory science, provides a way for anyone to gather data, along with scientists, around a scientific question or phenomenon. Citizen science offers immense value to both the general public and scientists. This fact sheet provides resources to connect readers to citizen science projects
Faculty Senate Agenda March 3, 2025
No full text3:00 Call to Order Approval of Minutes - February 3rd minutes 3:05 University Business 3:20 Faculty Senate Business 3:35 Information EPC Report - February 3, 2025 Emergency/Risk Survey 3:45 Report School of Graduate Studies Professional Responsibilities (PRPC) Parking and Transportation 4:00 New Business 4:05 Old Business Adjourn: 4:3
Faculty Senate Executive Committee Agenda, April 14, 2025
No full text3:00 Call to Order Approval of Minutes - March 17, 2025 3:05 University Business 3:20 Faculty Senate Business 3:35 Information EPC Report - April 3, 2025 3:40 Report The Office of Equity Committee on Committees Annual Report Calendar Committee Annual Report Retention Annual Report Recruitment Annual Report 4:05 Old Business 4:10 New Business President-Elect Nominations Format & Responsibilities - 2025-2026 Faculty Senate Meetings Faculty Senate Executive Committee Membership Adjourn: 4:30 p
Effects of Tannin-Rich Supplements on Immune Response in Goats and Beef Cattle: A Collection of Controlled Feeding Trials
No full textEmerging research evokes selection for various plant secondary compounds as a potential driver of ruminant diet selection, through animals’ evident ability to rectify deficiencies and even self-medicate. This idea was assessed by comparing physiological responses to vaccination challenges of animals fed diets of differing phytochemical composition. In the first of three separate trials, goats were placed in individual pens and fed one of three treatments in a completely randomized design. Treatments in Trial 1 consisted of redberry juniper (50 g) and shin oak (50 g). In Trial 2, goats were fed rations containing grape and blueberry pomace at an inclusion rate of 20%. In Trial 3, black Angus heifers were fed rations containing grape and blueberry pomace at an as-fed inclusion rate of 6%. Average daily gain, intake, and blood chemistry were assessed following vaccination health challenges. In Trial 1, goats fed shin oak had higher (p \u3c 0.05) blood globulins. Trial 2 revealed no treatment group differences in average daily gain (ADG), intake, or blood parameters evaluated. In Trial 3, no difference occurred in blood parameters; however, intake following inoculation was significantly greater (p \u3c 0.05) for heifers with grape/blueberry pomace included in their rations. In conclusion, phytochemicals, specifically condensed tannins, may have the ability to enhance immune response in ruminants, but further research is required, and these effects likely depend upon the source, structure, and dose of tannins or parent plant materials offered
Lifting-Line Predictions for Optimal Dihedral Distributions in Ground Effect
No full textWhen a flying wing comes within close proximity to the ground, a phenomenon called ground effect occurs where the lift is increased and the induced drag is decreased. This research seeks to determine the optimal dihedral distribution predicted by lifting-line theory that minimizes induced drag in ground effect. Despite some limitations, using lifting-line theory for this study allows for quick results across a large range of design variables, which would be infeasible for high-fidelity methods. The SLSQP optimization method is used along with a numerical lifting-line code to find the dihedral distribution that minimizes induced drag. Results are presented showing how the wing height, taper ratio, lift coefficient, and aspect ratio impact the induced drag and optimal dihedral distributions. For a given geometry, lifting-line theory predicts that there is a certain height above ground where the optimal solutions for a wing below this height result in bell-shaped wings with large section dihedral angles corresponding to a significant induced-drag reduction. For example, a wing with = 8 and height of ℎ/ = 0.25 can benefit from a reduction in induced drag of nearly 50% by employing an optimal dihedral distribution compared to a wing with no dihedral distribution
Exploring the Role of Ethanol in Bumblebee-Yeast Interactions
Get PDFWhy care? Bumblebees are known to be attracted to yeasts present in nectar when foraging. Yeasts produce ethanol via fermentation of sugars found in flower nectar and bee honey. Ethanol may act as a foraging cue for bumblebee species. This has wider implications for plant-pollinator interactions, including the pollination of dozens of bumblebee-pollinated crops such as tomato, eggplant, and strawberries
The Importance of High-Quality & Culturally Sensitive Maternity Centers
Get PDFCulturally sensitive maternity care is essential for improving maternal and infant health, especially in underserved communities. Despite the U.S. spending $111 billion annually on maternal care, the country experiences some of the highest maternal and infant mortality rates among high-income nations. Limited access to prenatal and postnatal care increases birth complications, preterm births, and postpartum health issues, particularly in rural areas. Research shows that community-based maternal health models, including midwifery and doula services, improve outcomes by addressing social determinants of health and increasing access to care. By offering prenatal exams, education, counseling, prenatal massage, and midwife-led deliveries, maternity centers can reduce transportation barriers that prevent women from receiving adequate care. Studies show that lack of access to these services increases maternal and infant mortality and medical complications