An investigation of the increase in vortex induced rolling moment associated with landing gear wake

Flight tests were conducted to verify the results found in ground base facilities of the effect of span lift load variation as well as the vortex attentuation of the high energy jet engine exhaust through proper thrust programming. During these flight tests a large increase in vortex strength was experienced as a result of extending the landing gear. Tests in the Langley Vortex Research Facility indicate that the wake produced by the landing gear may possibly form an aerodynamic endplate or reflection plane at the inboard edge of each inboard flap which increases the effective aspect ratio of the flap and thereby increases the strength of the flap outer edge vortex

Thrust-augmented vortex attenuation

An experimental investigation was conducted to determine the vortex attenuating effect of engine thrust. Tests were made using a 0.03-scale model of the Boeing 747 transport aircraft as a vortex generating model. A Learjet-class probe model was used to measure the vortex induced rolling moment at a scale separation distance of 1.63 km. These tests were conducted at a lift coefficient of 1.4 at a model velocity of 30.48 m/s. The data presented indicate that engine thrust is effective as a vortex attenuating device when the engines are operated at high thrust levels and are positioned to direct the high energy engine wake into the core of the vortex. The greatest thrust vortex attenuation was obtained by operating the inboard engine thrust reversers at one-quarter thrust and the outboard engines at maximum forward thrust

A static air flow visualization method to obtain a time history of the lift-induced vortex and circulation

A recently proposed method of flow visualization was investigated at the National Aeronautics and Space Administration's Langley Research Center. This method of flow visualization is particularly applicable to the study of lift-induced wing tip vortices through which it is possible to record the entire life span of the vortex. To accomplish this, a vertical screen of smoke was produced perpendicular to the flight path and allowed to become stationary. A model was then driven through the screen of smoke producing the circular vortex motion made visible as the smoke was induced along the path taken by the flow and was recorded by highspeed motion pictures

Electrochemical Cell Design and Experimental Setup for Passive Two-Phase Cooling

The goal for the three credit-hour independent study in the Nanoscale Energy and Interfacial Transport laboratory was to familiarize myself with research methodology, energy storage on the micrometer scale, passive cooling for advanced electronics, and provide general aid in setting up the new laboratory space. Dr. Damena Agonafer, the principal investigator, assigned two projects to undergraduate researchers from the months of January 2017 to May 2017: novel methods for increased nanocapacitor performance, and passive two-phase cooling for microelectronics. Initial work consisted of background research into hybrid nanocapacitors, including materials, ordered quasi 2-D structures, and synthesis methods. This project was cancelled in progress in favor of the cooling project. After transitioning projects, work primarily consisted of designing and prototyping an electrolyte cell for synthesizing the required micro-structures, modeling experimental setups in 3-D CAD software, and continuing to construct the laboratory. The outcomes of this independent study include a deep understanding of electrochemical energy storage and transfer and research methodology, a functional design for an electrochemical cell for synthesis of a copper inverse-opal structure, and a nearly complete physical laboratory space

Top 10 Medicinal Plants and their Groundbreaking Impact on Modern Medicine

This paper describes ten plants that having been groundbreaking drugs in the past century that were all derived from plants. I chose to do my project on this topic because of my family’s history with natural medicine. In 1999 my mother was diagnosed with Bile Duct cancer and the doctors gave her only a couple of weeks to live. The doctors recommended chemotherapy and radiation, but the results seemed negative for the situation. After some extensive research, my parents found St. Georges Medicinal Wellness Center located in the tiny village of Bad Aibling, Germany. This hospital along with offering traditional medicine techniques for cancer like chemotherapy and radiation, also offered medicinal wellness as an individualized health care. The hospital refers to the program as an integrative cancer therapy concept. From what I remember from the times that I was fortunate to travel to the clinic, she would get a round of chemotherapy followed by a natural medicine, homeopathic remedy, or massage therapy. Although ultimately my mother lost her battle with cancer, she surpassed the doctor’s expectations of several weeks to over seven years. I truly believe that the natural medicine treatments in combination with the western medicine that were used at this clinic added valuable years to her life. In my research I identified ten plants that I believed had the largest impact on modern medicine. The plants that I decided had the largest impact are as followed: Digitalis for atrial fibrillation, Yew for solid tumor cancer, Catharanthus for Leukemia, Camptotheca for soft tissue cancers, Poppy for pain management, Cinchona for Malaria, Podophyllum for Genital Warts, Saw Palmetto for prostate issues, Black Cohosh for menopause, and flaxseed for cholesterol. This project provided information to show that plants continue to play a significant role in holistic medicine . They also provide the chemical building blocks for new drugs. From my research I have concluded that plants will continue to play a role in drug design for years to come

Bi-axial Tissue Stretching Machine: MEMS 411 Senior Design Project

This report contains information on the development of a device to strain polyvinyl alcohol hydrogel samples. The device was made with the purpose of gathering data on the creation of anisotropy in brain tissue-like materials, such as PVA, by repeatedly subjecting materials to strain in low temperatures

Electrochemical Energy Storage Subsystems Study, Volume 2

The effects on life cycle costs (LCC) of major design and performance technology parameters for multi kW LEO and GEO energy storage subsystems using NiCd and NiH2 batteries and fuel cell/electrolysis cell devices were examined. Design, performance and LCC dynamic models are developed based on mission and system/subsystem requirements and existing or derived physical and cost data relationships. The models are exercised to define baseline designs and costs. Then the major design and performance parameters are each varied to determine their influence on LCC around the baseline values

Electrochemical energy storage subsystems study, volume 1

The effects on life cycle costs (LCC) of major design and performance technology parameters for multi kW LEO and GEO energy storage subsystems using NiCd and NiH2 batteries and fuel cell/electrolysis cell devices were examined. Design, performance and LCC dynamic models are developed based on mission and system/subsystem requirements and existing or derived physical and cost data relationships. The models define baseline designs and costs. The major design and performance parameters are each varied to determine their influence on LCC around the baseline values