Upper Surface Nacelle Influence on SCAR Aerodynamic Characteristics at Transonic Speeds

The arrow-wing transport configuration with detached engines located over the wing to produce upper surface exhaust flow effects was tested at angles of attack from -4 deg to 8 deg and jet total-pressure ratios from 1 (Jet off) to approximately 10. Wing tip leading edge flap deflections of -10 deg to 10 deg were tested with the wing-body configuration only (no nacelles). Tests were made with various nacelle chordwise, spanwise, and vertical height locations over the Mach number, angle of attack, and jet total-pressure ratio ranges. Deflecting the wing tip leading edge flap from 0 deg to -10 deg increased maximum lift to drag ratio by 1.0 at subsonic speeds. Installation of upper surface nacelles (no wing/nacelle pylons) increased the wing-body pitching moment at all Mach numbers and decreased the drag of the wing-body configuration at subsonic Mach numbers. Jet exhaust interference effects were negligible

Transonic aerodynamic characteristics of a supersonic cruise aircraft research model with the engines suspended above the wing

The influence of upper-surface nacelle exhaust flow on the aerodynamic characteristics of a supersonic cruise aircraft research configuration was investigated in a 16 foot transonic tunnel over a range of Mach numbers from 0.60 to 1.20. The arrow-wing transport configuration with engines suspended over the wing was tested at angles of attack from -4 deg to 6 deg and jet total pressure ratios from 1 to approximately 13. Wing-tip leading edge flap deflections of -10 deg to 10 deg were tested with the wing-body configuration. Various nacelle locations (chordwise, spanwise, and vertical) were tested over the ranges of Mach numbers, angles of attack, and jet total-pressure ratios. The results show that reflecting the wing-tip leading edge flap from 0 deg to -10 deg increased the maximum lift-drag ratio by 1.0 at subsonic speeds. Jet exhaust interference effects were negligible

Observations on the Stages of Development of Balaninus (Curculio) Larva to Adult

The major purpose of this study is to determine and discuss observations on the stages of the life cycle of the weevil resulting from the larvae that are found infesting acorns of the live oak, and to classify the adults. This study is limited to the use of only one species of acorns (Quercus Virginiana), a species of acorns which is most often found in the Southwestern part of the United States. Preparation for this problem started in September, 1954, when observations were made of damage done by the larvae infesting the acorns on the Prairie View Agricultural and Mechanical College campus. Collections of acorns were made October, 1954, materials and equipment secured, and plans were made as to how the experiment would be carried out. All laboratory work was carried on in the Biology Experimental Laboratory of the Old Agricultural Building

A study of applicants for the Master of Education degree at the School of Education, Boston University, from 1947 to 1957

Thesis (Ed.M.)--Boston Universit

Geothermal reservoir simulation

The prediction of long-term geothermal reservoir performance and the environmental impact of exploiting this resource are two important problems associated with the utilization of geothermal energy for power production. Our research effort addresses these problems through numerical simulation. Computer codes based on the solution of partial-differential equations using finite-element techniques are being prepared to simulate multiphase energy transport, energy transport in fractured porous reservoirs, well bore phenomena, and subsidence

A Comparison of Minority and Non-Minority Engineering Students on Selected Personality and Program Variables

The purpose of this study was to investigate whether there are common characteristics associated with 226 Hispanic, African American, and White engineering students who persist at predominantly White colleges and universities. A personality profile of minority and non-minority engineering students was developed. Information regarding factors influencing choice of major, university, study, work and extracurricular involvement, possible reasons for withdrawal from college, awareness and satisfaction with student support services and selected academic courses was also compiled. Components of Minority Engineering Programs (MEPs) which are most used or valued by minority engineering students were identified. Analysis of Variance identified four of the thirty-seven ACL scales that were statistically significantly different between groups. MEP results indicate that students attending universities with formal MEP\u27s in place are more aware of MEP and other services offered by the university than students attending universities without formal MEP\u27s. Engineering Survey results indicate minorities as deciding on college and college major much earlier than their non-minority counterparts. Minorities were employed more hours per week than non-minorities and spend less time studying outside of class

THE INFINITE AS ORIGINATIVE OF THE HUMAN AS HUMAN: A TRANSCENDENTAL PHENOMENOLOGICAL EXPLICATION OF THE PHILOSOPHY OF EMMANUEL LEVINAS

Few philosophers, today, are doing more than simple recognition of Levinass debt to phenomenology when a thorough explication of how phenomenological methodology impacts Levinass work is needed. This dissertation is the needed discussion of methodology that has been so absent in Levinas as well as in so many of his interpreters. The purpose, herein, is to synthesize Levinass work, explicating it in terms of transcendental methodology, the result of which reveals Levinass claims to be more defensible when understood in these terms than when the full rigor of this methodology is not properly grasped. First, to connect Levinas to transcendental phenomenology a correct perspective of the phenomenological tradition is needed. I argue that phenomenology is a methodology that discloses those horizons that condition experience such that appearance takes on meaning. I further argue that it is important to see this disclosure as something open-ended and ongoing rather than a method capable of fully revealing a final telos. Levinas fits into this methodology by providing the ethical as just such a horizonal condition, while his constant returning to this theme highlights the need to keep reworking the description of its meaningful impact on experience. Second, I defend Levinas from those who claim his work cannot be phenomenological, based on what they see as an implied Jewish tradition informing his description. I argue that what must be understood is that Levinass reference to God, Biblical stories, and Jewish wisdom impose an unsettling language that is introduced to replace traditional phenomenological language that does not always allow for the goals phenomenology sets for itself. This imposition does not use the Jewish tradition to make his argument but as a vocabulary far better at describing the ethical condition than what is commonly used in phenomenology. The final step of explication involves the actual application of the methodology, now understood aright, to Levinass claims about the other, the self, and the ethical. The result is that once we understand the ethical as the infinite originative horizon out of which the conscious ego emerges, later interpretations of Levinas will be able to successfully move beyond his work

A Description of Variability of Pacing in Marathon Distance Running

The purpose of this study was twofold: 1) to describe variability of pacing during a marathon and 2) to determine if there is a relationship between variability of pacing and marathon performance. Publically available personal global positioning system profiles from two marathons (Race 1 n = 116, Race 2 n = 169) were downloaded (http://connect.garmin.com) for analysis. The coefficient of variation of velocity (Velcov) was calculated for each profile. Each profile was categorized as finishing in under 3.9 hours, between 3.9 and 4.6 hours, or longer than 4.6 hours. Linear and quadratic lines of best fit were computed to describe the relationship between marathon finish time and Velcov. A 2 (Race) x 3 (bin) analysis of variance (ANOVA) was used to compare the dependent variable (Velcov) between races and the marathon bin finish times. Velcov was not influenced by the interaction of finish time bin and Race (p\u3e0.05) and was not different between races (Race 1: 16.6 ± 6.4%, Race 2: 16.8 ± 6.6%, p\u3e0.05). Velcov was different between finish time categories (p\u3c0.05) for each race such that Velcov was lower for faster finish times. Using combined data from both races, linear (marathon finish time = marathon finish time = 0.09Velcov + 2.9, R^2 = 0.46) and quadratic (marathon finish time = -0.0006 Velcov 2 + 0.11 Velcov + 2.7, R^2 = 0.46) lines of best fit were significant (p\u3c0.05). Slower marathon finishers had greater variability of pace compared to faster marathoner finishers