Test And Verification Of Vortex Shedding For A 3d Bluff Body,
2012
California Polytechnic State University, San Luis Obispo
Test And Verification Of Vortex Shedding For A 3d Bluff Body, Paul D. Innes, Charles E. Carlson
Aerospace Engineering
Testing of a 3D bluff body with and without end plate tabs was performed in the California Polytechnic State University 3x4 ft low speed wind tunnel. The CP values were obtained for the test case with no end plate tabs for speeds of 10, 15, 20, and 30 m/s. It was observed that stronger vortex shedding ocured at the higher speed test cases. The model was shimmed to be at approximately 5° angle of attack in order to obtain symmetrical negative CP spikes for the top and bottom of the model without tabs. Trends were observed and compared …
Instrument Panel Design,
2012
California Polytechnic State University, San Luis Obispo
Instrument Panel Design, Martin Bialy, Amber Carney, Michael Roche
Aerospace Engineering
This project focused on the design and implementation of an Electronic Flight Instrument System for a home built experimental aircraft known as a CH-701. Older aircraft use manual gauges and dials based on varying internal instruments such as gyro’s and the like but many of these traditional instruments to a singular GUI displaying multiple instruments data at one time. These devices are aimed at helping the pilot stay more alert and aware when flying between automatic warnings when in dangerous flying conditions / configurations as well as simplifying the instrument panel to only display what is absolutely necessary. These programs …
Global Launch Vehicle Selector,
2012
California Polytechnic State University, San Luis Obispo
Global Launch Vehicle Selector, Keisuke Suzuki
Aerospace Engineering
No abstract provided.
The Numerical Open-Source Many-Body Simulator (Noms),
2012
California Polytechnic State University, San Luis Obispo
The Numerical Open-Source Many-Body Simulator (Noms), Jason Lloyd Daniel, Javen Kyle Foster-O'Neal
Aerospace Engineering
This paper outlines the setup and creation of an object-oriented N-body simulator as part of a continued project to explore physical phenomenon and human-computer natural interaction technologies. The tools and processes required to build an N-body simulator are also included. Several integrators were evaluated based on their ability to maintain system energy The 2nd order integrator Verlet and 3rd order integrator Hermite algorithms had the greatest accuracy to model large-scale N-body dynamics for their given computation time. Other algorithms required significantly shorter time steps to achieve similar short-term accuracy. At present, NOMS can reasonably simulate 10,000 particles at less than …
Comprehensive Matlab Gui For Determining Barycentric Orbital Trajectories,
2012
California Polytechnic State University, San Luis Obispo
Comprehensive Matlab Gui For Determining Barycentric Orbital Trajectories, Steve Katzman
Aerospace Engineering
When a 3-body gravitational system is modeled using a rotating coordinate frame, interesting applications become apparent. This frame, otherwise known as a barycentric coordinate system, rotates about the system’s center of mass. Five unique points known as Lagrange points rotate with the system and have numerous applications for spacecraft operations. The goal of the Matlab GUI was to allow easy manipulation of trajectories in a barycentric coordinate system to achieve one of two end goals: a free-return trajectory or a Lagrange point rendezvous. Through graphical user input and an iterative solver, the GUI is capable of calculating and optimizing both …
Effect Of Multifunctional Material On The Mechanical Behavior Of Composite Structure Using Finite Element Analysis,
2012
California Polytechnic State University, San Luis Obispo
Effect Of Multifunctional Material On The Mechanical Behavior Of Composite Structure Using Finite Element Analysis, Nicholas A. Romonoski
Aerospace Engineering
No abstract provided.
Development Of A Pyrotechnic Shock Simulation Apparatus For Spacecraft Applications,
2012
California Polytechnic State University, San Luis Obispo
Development Of A Pyrotechnic Shock Simulation Apparatus For Spacecraft Applications, Joseph Binder, Matthew Mccarty, Chris Rasmussen
Aerospace Engineering
This report details the research, design, construction, and testing of a pyrotechnic shock simulation apparatus for spacecraft applications. The apparatus was developed to be used in the Space Environments Lab at California Polytechnic State University. It will be used for testing spacecraft components with dimensions up to 24”x12”x12” as well as CubeSats. Additionally, it may be used as an instructional or demonstrational tool in the Aerospace Department’s space environments course. The apparatus functions by way of mechanical impact of an approximately 20 lb stainless steel swinging hammer. Tests were performed to verify the simulator’s functionality. Suggestions for improvement and further …
Thermal Vacuum Integration For Cal Poly's Space Environments Laboratory,
2012
California Polytechnic State University, San Luis Obispo
Thermal Vacuum Integration For Cal Poly's Space Environments Laboratory, Chelsea Barackman, Steven Jackowski
Aerospace Engineering
The purpose of the senior project is to construct a thermal vacuum by utilizing a preexisting vacuum chamber in the Space Environments Lab, and a donated Advanced Thermal Sciences (ATS) chiller. While a thermal vacuum is already available on campus, building one for the Space Environments Lab would grant undergraduates access to the equipment, allowing a much better understanding of testing methods and procedures in use by the aerospace industry. This paper explains the design and analysis of the thermal vacuum (T-VAC) project as well as the operation and procedures required for the ATS chiller and fill/drain tank. The thermal …
Multi-Dimensional Modeling Of Charring Ablators,
2012
University of Kentucky
Multi-Dimensional Modeling Of Charring Ablators, Haoyue Weng, Huaibao Zhang, Ovais U. Khan, Alexandre Martin
Mechanical Engineering Faculty Publications
Re-entry of a spacecraft occurs at the hypersonic regime where the flow field is extremely complex: high temperature gradients occurring in the shock-layer region ionize and dissociate the air. Even if a large portion of heat generated during this process is convected away in the surrounding air, a fraction of it is still transferred to the vehicle. Therefore, it is important to protect the vehicle with a suitable kind of shielding. Of the many techniques available today, use of ablative material is gaining popularity. The basic idea behind an ablating heat shield is that the energy incident on the spacecraft …
The Synergistic Integration Of Computational Fluid Dynamics And Experimental Fluid Dynamics For Ground Effect Aerodynamics Studies,
2012
University of New South Wales
The Synergistic Integration Of Computational Fluid Dynamics And Experimental Fluid Dynamics For Ground Effect Aerodynamics Studies, Tj Barber, G Doig, C Beves, I Watson, S Diasinos
Aerospace Engineering
This article highlights the ‘synergistic’ use of experimental fluid dynamics (EFD) and computational fluid dynamics (CFD), where the two sets of simulations are performed concurrently and by the same researcher. In particular, examples from the area of ground effect aerodynamics are discussed, where the major facility used was also designed through a combination of CFD and EFD. Three examples are than outlined, to demonstrate the insight that can be obtained from the integration of CFD and EFD studies. The case studies are the study of dimple flow (to enhance aerodynamic performance), the analysis of a Formula-style front wing and wheel, …
Aerodynamics Of An Aerofoil In Transonic Ground Effect: Methods For Blowdown Wind Tunnel Scale Testing,
2012
University of New South Wales
Aerodynamics Of An Aerofoil In Transonic Ground Effect: Methods For Blowdown Wind Tunnel Scale Testing, G. Doig, T. J. Barber, A. J. Neely, D. D. Myre
Aerospace Engineering
No abstract provided.
Development Of A Flight Test Program For A Homebuilt Zenith Stol Ch 701,
2012
California Polytechnic State University, San Luis Obispo
Development Of A Flight Test Program For A Homebuilt Zenith Stol Ch 701, Reed Danis, Dave Nguyen
Aerospace Engineering
The objective of this senior project is to prepare a phase I flight test program for a homebuilt Zenith CH 701 kit aircraft. The CH 701 is a small, short takeoff and landing experimental aircraft. A team including several Cal Poly students helped to construct the airframe and avionics of a 701 during the 2011-2012 academic year. The flight test program is necessary for obtaining unrestricted FAA flight certification for the completed aircraft. A set of test flight cards were created to aid in meeting the 25 to 40 hours of required phase I flight testing. These cards include specific …
De-Orbiting Upper Stage Rocket Bodies Using A Deployable High Altitude Drag Sail,
2012
California Polytechnic State University, San Luis Obispo
De-Orbiting Upper Stage Rocket Bodies Using A Deployable High Altitude Drag Sail, Robert A. Hawkins Jr., Joseph A. Palomares
Aerospace Engineering
This report examines the effectiveness of a drag sail to de-orbit upper stage rocket bodies. Many other perturbations contribute to the de-orbiting of these rocket bodies, and these perturbations will also be discussed briefly. This paper will show the length of time needed to force the altitudes of various launch vehicle stages with varying drag area sizes to less than 100 km. The upper stage of the Delta IV launch vehicle in an orbit with an altitude of 500 km will naturally de-orbit in 720 days but when equipped with a 20 m2 drag sail, it will de-orbit in …
A Study On Organic Epoxy And Hemp Composite Plates With An Emphasis On Mechanical And Finite Element Analysis,
2012
California Polytechnic State University, San Luis Obispo
A Study On Organic Epoxy And Hemp Composite Plates With An Emphasis On Mechanical And Finite Element Analysis, Alma Melendez
Aerospace Engineering
Several vibration and tensile tests were conducted for four natural fiber hemp composites in order to observe its behavior and acquire the material properties of hemp. Two plates were made on the Cal Poly press table, while the other two plates were made on the Cal Poly vacuum table. All four plates are made of 100% hemp under three different types of weave. The first plate is called CTPT-12, has a thickness of 0.053 inches, and was made on the press table. The second plate is called CTL4 with a thickness of 0.152 inches and made on the press table. …
Ramjet Fuel System,
2012
California Polytechnic State University, San Luis Obispo
Empennage Sizing And Aircraft Stability Using Matlab,
2012
California Polytechnic State University, San Luis Obispo
Empennage Sizing And Aircraft Stability Using Matlab, Ryan C. Struett
Aerospace Engineering
No abstract provided.
Degradation Of Solar Cells Due To Arcing In A Vacuum Chamber,
2012
California Polytechnic State University, San Luis Obispo
Degradation Of Solar Cells Due To Arcing In A Vacuum Chamber, Christina Gonzalez
Aerospace Engineering
This report summarizes the senior project entitled Degradation of Solar Cells Due to Arcing in a Vacuum Chamber. The goal of this experiment was to show electrical and physical degradation of silicon solar cells in a vacuum chamber. The cells were characterized and then placed in a vacuum chamber. Under vacuum, a potential was created to induce arcing to the cell. The cell was characterized again after arcing to determine the change in efficiency. This document details the process for designing the circuit to create the arcing, and the different setups used to degrade the cells electrically and physically. It …
The Study Of Natural Composite I-Beam In A Three Point Bending Test,
2012
California Polytechnic State University, San Luis Obispo
The Study Of Natural Composite I-Beam In A Three Point Bending Test, Abdel Shabbar
Aerospace Engineering
The objective of this experiment is to conduct a series of unidirectional tensile test on several samples of natural occurring plant fibers. Among the materials tested, hemp has proven to be the most promising candidate as the base material in creating an all-natural composite I-Beam. This I-Beam will be entered into the annual SAMPE 2012 competition to compete against other schools and universities nationwide. These I-Beams will undergo a three point bending test, and must withstand the greatest load whilst remaining in the parameters set by SAMPE. This I-Beam will go on to take third place internationally. In addition, the …
Flaperon Assembly Manual For Pegastol Aftermarket Wings,
2012
California Polytechnic State University, San Luis Obispo
Flaperon Assembly Manual For Pegastol Aftermarket Wings, Eric Alan Gray
Aerospace Engineering
No abstract provided.
Assembly Of A Passive Slat System For A Ch-701 Kit Aircraft,
2012
California Polytechnic State University, San Luis Obispo
Assembly Of A Passive Slat System For A Ch-701 Kit Aircraft, Jordan Coenen, Spencer Spagnola
Aerospace Engineering
No abstract provided.
