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- Acceleration; Analysis; Angular; Bat; Brown; Catd; Cb; Center of mass; Constant absolute target direction; Constant bearing; Daubenton's; Dynamic; Force; Forces; Horseshoe; Maneuvers; Moment; Moments; Prey avoidance tactics; Pursuit; Rigid; Strategic flight; Strategies; Velocity (1)
- Aerodynamics; Flapping flight; Insect flight; Leading edge vortex; Volumetric piv; Vortex tilting (1)
- Aerospace engineering; Fatigue; Gas turbine; Mechanical engineering; Thermomechanical (1)
- Albedo; Atmosphere; Mars; Planetary engineering; Planetary science; Solar system; Space; Terraforming; Thermodynamics (1)
- Analysis; Ansys; Bending; Coated; Coating; Composite; Damage; E glass; E glass/polyester; Eglass; Eglass/polyester; Element; Element birth; Element death; Finite; Finite element analysis; Flexural; Nano; Nano paper; Nanopaper; Paper; Polyester; Thermal; Thermal damage; Three point bend; Three point bending (1)
Articles 1 - 7 of 7
Full-Text Articles in Engineering
The Thermodynamics Of Planetary Engineering On The Planet Mars, Christopher Barsoum
The Thermodynamics Of Planetary Engineering On The Planet Mars, Christopher Barsoum
HIM 1990-2015
Mars is a potentially habitable planet given the appropriate planetary engineering efforts. In order to create a habitable environment, the planet must be terraformed, creating quasi-Earth conditions. Benchmarks for minimum acceptable survivable human conditions were set by observing atmospheric pressures and temperatures here on Earth that humans are known to exist in. By observing a positive feedback reaction, it is shown how the sublimation of the volatile southern polar ice cap on Mars can increase global temperatures and pressures to the benchmarks set for minimum acceptable survivable human conditions. Given the degree of uncertainty, utilization of pressure scale heights and …
Experimental And Numerical Investigations Of Microdroplet Evaporation With A Forced Pinned Contact Line, Kevin Gleason
Experimental And Numerical Investigations Of Microdroplet Evaporation With A Forced Pinned Contact Line, Kevin Gleason
HIM 1990-2015
Experimental and numerical investigations of water microdroplet evaporation on heated, laser patterned polymer substrates are reported. The study is focused on both (1) validating numerical models with experimental data, (2) identifying how changes in the contact line infuences evaporative heat transfer and (3) determining methods of controlling contact line dynamics during evaporation. Droplets are formed using a bottom-up methodology, where a computer-controlled syringe pump supplies water to a ~200[micro]m in diameter fluid channel within the heated substrate. This methodology facilitates precise control of the droplets growth rate, size, and inlet temperature. In addition to this microchannel supply line, the substrate …
Ignition Studies Of Diisopropyl Ketone, A Second-Generation Biofuel, Owen Pryor
Ignition Studies Of Diisopropyl Ketone, A Second-Generation Biofuel, Owen Pryor
HIM 1990-2015
This thesis focuses on ignition of diisopropyl ketone (DIPK), a new biofuel candidate that is produced by endophytic conversion. The ignition delay times behind reflected shockwaves were modeled in a high-pressure shock tube. The ignition delay times were compared to other biofuels and gasoline surrogates. Parametric studies of the ignition delay experiments were performed between 1-10 atm and 900 -1200K. An OH optical sensor was developed in conjunction for the ignition delay experiments. The OH optical sensor uses a microwave discharge lamp to generate light at 308 nm that will then be shined through the combustion reaction. Using Beer-Lambert law …
Numerical Simulation Of Fracture Of A Nano-Paper Coated E-Glass/Polyester Composite With Thermal Damage, Zachary Graham
Numerical Simulation Of Fracture Of A Nano-Paper Coated E-Glass/Polyester Composite With Thermal Damage, Zachary Graham
HIM 1990-2015
Aerospace research for next-generation travel increasingly focuses on the use of advanced composites to reduce weight and cost while retaining strength. One subset of materials with great potential is based on the combination of resin matrix and glass-fiber reinforcement. This research explores the application of a candidate nanopaper coating with a given composite. Prior research applied a set of given heat fluxes to the top surface of the composite for a set of given periods of time, and subsequently performed a 3-point flexural test to determine the elastic modulus for both the coated and uncoated composite for all of the …
Strategically Minded Dynamic Analysis Of Strategic Flight Bat Maneuvers, Marie Kaspryzk
Strategically Minded Dynamic Analysis Of Strategic Flight Bat Maneuvers, Marie Kaspryzk
HIM 1990-2015
CATD was not only adequate for analyzing the pursuit of erratically moving prey but also worked well when analyzing the pursuit of prey that remained stationary. It cannot be fully concluded that bats utilize the CATD strategy to successfully capture erratically flying prey. The angle remains relatively constant but does not exhibit a zero change in angle as by definition. The large forces experienced by the bat were seen when the bat began to rotate its body about its pitch axis or when the bat made a large turn. Moments were seen specifically when the bat began to bank into …
Application Of Non-Local Approaches For Predicting The Response Of V-Notch Under Thermomechanical Fatigue Loading, Trung Nguyen
Application Of Non-Local Approaches For Predicting The Response Of V-Notch Under Thermomechanical Fatigue Loading, Trung Nguyen
HIM 1990-2015
The topic of this thesis is the construction of a formula to approximate stress-strain responses at notches under thermomechanical fatigue (TMF) loading. The understanding of material behavior of the V-notched component which experiences TMF is important to the mechanical industries where V-notched structures are often utilized. In such applications, it is crucial that the designers be able to predict the material behavior; therefore, the purpose of this research is to examine and to model the precise effects a stress concentration will have on a specimen made of a generic Ni-base superalloy. The effects of non-isothermal loading will be studied, and …
Vortex Tilting And The Enhancement Of Spanwise Flow In Flapping Wing Flight, Spencer Frank
Vortex Tilting And The Enhancement Of Spanwise Flow In Flapping Wing Flight, Spencer Frank
HIM 1990-2015
In summary the tilting mechanism helps to explain the overall flow structure and the stability of the leading edge vortex.; The leading edge vortex has been identified as the most critical flow structure for producing lift in flapping wing flight. Its stability depends on the transport of the entrained vorticity into the wake via spanwise flow. This study proposes a hypothesis for the generation and enhancement of spanwise flow based on the chordwise vorticity that results from the tilting of the leading edge vortex and trailing edge vortex. We investigate this phenomenon using dynamically scaled robotic model wings. Two different …