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RC BAJA CAR Suspension & Steering
Get PDFStudents at Central Washington University were faced with a challenge to engineer an RC Baja Car with a focus between drivetrain and chassis or suspension and steering for a competition. The different foci were split between two team members and the engineering for this report is focused on steering and suspension.
The suspension and steering components underwent the process of developing calculations for all individual parts for design. The design process included using CAD software to provide a 3D model for each individual part. To save time, 3D modeling software helped find fitment issues before the RC Car was manufactured and assembled. Succeeding the design process was the manufacturing of all the designed parts. The parts were manufactured using 3D printers, CNC machinery, vertical milling machines, band saws, and various hand tools. Once all parts of the were created, the car was assembled by combining all parts of the car to make a final assembly. The RC Baja Car was tested to ensure that it met all predetermined requirements which were created to guarantee it was ready for the competition.
The steering components rotated 10 degrees and the deviation was less than 5cm at 10 mph for 2 meters. Additionally, for the suspension, it was able to maintain a force greater than 20 pounds. These parameters verify that the suspension and steering solidify all requirements
NASA Rocket Payload Airfoil Deceleration
Get PDFNASA Student Launch Initiative gave a requirement that a lander must descend to the ground from a height of 400-800 feet with predetermined human survivability without using parachute or streamers. Around sixty colleges were chosen from around the United States to compete in competition. This competition and data taken will help innovate the rocket and lander programs in full scale space exploration in the future.
Design of the payload involved intensive design, testing and aerodynamic analysis. Majority of the manufacturing revolved around 3D printing, aluminum 5051 sheet and carbon fiber vacuum bagging. PLA and PETG was used on components which gave the payload unique shapes and functions due to the versatility of 3D printing. Aluminum 5051 sheet was waterjet cut and formed to make mounts, which secured the airfoils to body of payload. SolidWorks was used religiously to make sure fitment of components to themselves and within the body tube of the rocket. These processes came together in the form of a gyrocopter with eight airfoil blades generating lift to decelerate the payload to specified rate.
There were multiple ejections tests which resulted in controlled retentions and ejection to prove the payload would decelerate to the ground with human survivability. The airfoils were able to withstand the forces of the payload mass of nine pounds as well as the forces of being ejected from 450 feet. Which concludes that the payload efficiently follows all requirements given by the NASA Student Launch Initiative.
Keywords: NASA, Payload, Gyrocopte
RC Baja Steering and Suspension
Get PDFThe engineering objective of this project are designing, manufacturing, and testing the most efficient and strongest possible RC Baja Steering and Suspension system that the engineer could produce with the provided or acquired equipment, and materials.
This was all done successfully over the school year. During the Fall quarter, the RC car was undergoing designing, and in these design processes, mechanics of materials, statics, and dynamics, were used to come up with the most adequate materials and design. Computer aided designed (CAD) models were then created to get a RC Baja CAD assembly. Winter Quarter of the school year was the manufacturing, and construction process of each and individual part for the RC car. Spring quarter of the RC Car was testing of the entire car to confirm whether the car satisfies the requirements stated in the beginning of the quarter or not.
In the suspension components, the front and rear suspension was to have a 2” articulation. Along with this, the car was listed to have a usable 1” of suspension travel front and rear under its own static weight. It was also noted that that the car needed to make a 180 degree turn in a 3.5’ radius, and the car completed this in only a 2’ radius, almost a 60% tighter turning radius. After all the research was done, the car met all requirements. Each part of the car met or exceeded the initial requirements made by the engineer
Articulating Balsa Wood Bridge
Get PDFBridges have been used worldwide to allow passage between untraversable terrain. These bridges are built according to their terrain and environment, while also withstanding the forces of objects going across them. This project explores building a bridge under specific design restrictions to be able to simulate objects traversing across and under it. The device consists of a bridge, utilizing a Pratt truss design, and an articulation tower which are mechanically linked using a hinge. The articulation tower allows the bridge to be raised and lowered, simulating an object to be passed under. Raising and lowering the bridge consists of using a motor controlled by an Arduino. Both the bridge and articulation tower are designed and built using balsa wood, making the device very lightweight. The device is tested through several methods. A tape measure and an applied load is used to test the performance. The results found that the bridge withstood a center load of 19 kg. The center of the bridge also deflected less than 25 mm when the load was applied. Other tests that meet specification requirements were completed, such as making sure the device was under the required mass of 85 kg and measuring the middle of the bridge when it’s raised to be at least 140 mm
RC Baja Competition - Suspension and Steering
Get PDFThe objective of this project is to design and construct a vehicle that will compete in the RC Baja Competition. As this project will be split between two students, this paper will be focusing on suspension and steering while the partner will focus on chassis and drivetrain. The vehicle will be tested in three different categories: the sprint, the slalom, and the Baja. These categories will test its speed, turning capabilities, and its overall capability in rough terrain.
As this paper focuses on the suspension and steering. Several analyses and decision matrix were used to find the best dimension along with material needed for the structural components. The Baja will test the vehicle’s capability in handling stress along with finding the necessary suspension and turning radius.
To ensure success in the sprint portion, the vehicle deviates less than 5 inches when driving for 50 feet. To give a competitive edge in the slalom the vehicle has a turn radius of 10 inches. Finally, the wishbones have been tested in deflection and buckling capabilities. The wishbones will not buckle under a 75 lb. axial load, nor deflect more than 0.2 inches (5mm) under a 25 lb. perpendicular load. Furthermore, the vehicle can be dropped at 3 feet with the springs only compressing 1 inch. All of this ensures the vehicle will have the capability to survive the rough terrain in the Baja competition
Echoes of Internment: A Study of the Removal and Reuse of Buildings from the Former Minidoka War Relocation Center, Idaho
Get PDFIn the study of Japanese American relocation centers, much of the emphasis is put on the centers while they were still active detention centers, and not what happened to them after they closed. The buildings of the centers often were not scrapped and landfilled but removed and repurposed in the farms and towns surrounding the former center sites, and now blend into their current environments.
I built a comprehensive inventory of buildings that were part of the Minidoka Relocation Center, the site of which is now a National Historic Site. I compiled their former uses within the center, current uses, distance from the Historic Site, remaining historic architectural features, current condition, and historical integrity.
Most of the former Minidoka buildings were given with federal land units during two auctions in 1947 and 1949. The majority of them lie within 15 miles of the Historic Site, and all lie within 45 miles of it. The majority of buildings are rural, which aligns with them being given with land units. The majority of buildings with high historical integrity are within the Hunt community (close to the Historic Site), which is where most of the land units were located. However, the largest category of historical integrity is low, which aligns with the number of farmhouses and urban buildings. This information is available for the creation of interpretive projects for the Historic Site by the National Park Service, such as visitor center exhibits, brochures, or driving tours
Object-based image analysis of slum settlements: A case study from Dar es Salaam, Tanzania
Get PDFIn recent years, slum settlements developed in nations, due to increases in population density and a lack of land use planning (Dar Ramani Huria, 2016). Remote sensing provides city planners, engineers, and local officials the ability to analyze past, present, and possible future growth of slum settlements and inadequate access to urban services (water, garbage disposal system, etc.). The research aims to extract building footprints of slum settlements in Dar es Salaam, Tanzania. Therefore, the purpose of this research was to employ remote sensing methods, in order to identify and extract slum settlements in the observed area. High resolution imagery (0.3 meters), provided by Worldview 3 was used to assess urban structures within two wards in Dar es Salaam, Tanzania (Manzese & Tandale). Overall, this research provided evidence that Object-Based Image Analysis is a beneficial and useful process in capturing slum settlements, considering that it had captured up to 118,500 square meters of slums. Slum settlement mapping provides the following for citizens of slum settlements: access to water, improved sanitation, secure tenure, or more durable housing. Slum settlement mapping leads to a better understanding of future land use planning, the local economy, and housing regulations
Muslims under the rainbow: Five aspects of reconciling Islamic faith with queer identity
Get PDFAcademia regarding intersectionality has often involved analyses of how exposure to multiple forms of discrimination impact people’s lives. However, researchers have increasingly begun to examine how the compounded negative effects of intersectionality can be mediated to allow a diverse amalgamation of identities to be embraced and empowered. Muslims who identify as sexual minorities represent a unique intersectional positionality, existing in the liminal spaces between communities that many see as distinct and immiscible. Attempting to reconcile the heterogeneous facets of Islam and queerness encompasses navigating various facets of community, family, religiosity, self-identification, and media representation. These journeys are often continuous, involve creating new normalcies and queering methods of embodiment, and, at this time, are more likely to transform individual lives and smaller community spaces than Muslim societies at large. Through an examination of current archival research and lived experiences, this paper will argue that, despite the difficulties of unifying the conflicting Muslim and LGBTQIA+ identities, research strongly suggests that queer Muslims can achieve an uncompromised congruence of faith and sexuality by renegotiating and reinterpreting their relationships with faith, family, community and self
Poetic Meaning and Perspectives on Sport: Introducing Kinesiology Undergraduates to Mysticism
Get PDFMysticism in sport is a unique experience in which someone is engulfed by a feeling of existence both in real time and stopped time as well as entering a realm of unparalleled reality surrounded by mind and spirit (Higgs & Braswell, 2004). Despite the inexplicability of mystic experiences, poetry provides one means of deciphering them. The purpose of this article is to model how sport participants could be engaged in a process of self-reflective inquiry, then self-author scholarship that synthesizes and interprets the results of their self-reflection. During their 2021 Winter Quarter course on perspectives in physical activity, four undergraduate students were invited to create an original work of poetry on a sporting experience or set of experiences. Each author supplemented their poem with a reflection paragraph, which identified how their poems overcame limitations of “exact speech” to convey mystical qualities embedded in their sporting experience. Three styles of poems were produced: (a) acrostic, (b) haiku, and (c) free verse. Through the creative writing process, the four authors furthered their knowledge of winning and losing through sport, love and connection to sport, transcendent levels of play including the ‘flow state’, as well as furthering their understanding of mysticism and its unique relationship to personal experience. Analysis of the given poems revealed similarities in the emotions evoked, either as an athlete or as a spectator. Future directions would include exploration of other sport roles besides athletes and spectators, as well as the incorporation of additional artistic modalities besides poetry
“Mindful God and One Man’s Daring”: The Christian-Pagan Conflict of Beowulf
Get PDFComposed by an anonymous Christian poet between the seventh and the ninth century, Beowulf is an Anglo-Saxon epic poem that records the life of the Geat hero, Beowulf and his slaying of three terrible monsters, Grendel, Grendel’s Mother, and a dragon. Despite the story’s original pagan origin, this essay analyzes the extent to which the Christian faith of its poet influences the outcome of these slayings and the overall themes of the poem. An analysis of the characters of Grendel’s Mother and the dragon in particular presents strong parallels between the culture of the Anglo-Saxons and their monsters. Viewed in context of the poet’s Christian faith, these parallels call into question key pillars of the Anglo-Saxon way of life, including their own heroic code. Ultimately, Beowulf extolls the triumph of Christian morality over paganism and encourages reflection on how its morals might be applied to the present day