Guidance, flight mechanics and trajectory optimization. Volume 14 - Entry guidance equations

Entry guidance equations, reference trajectories, and guidance system mechanizatio

Far from the Madding Crowd: Crowdfunding a Small Business Reorganization

This Comment proposes a framework by which bankruptcy courts can analyze cases involving non-equity crowdfunding and small business debtors. The framework is best described in the context of four questions likely to be raised by the creditors of a crowdfunding debtor. Using these questions, a court evaluates these cases with an eye towards promoting trust in the crowdfunding sector. By explaining the proposed framework through the eyes of a fictional small business, this Comment argues that courts can answer creditors\u27 questions in a way that both satisfies the twin aims of bankruptcy and protects the integrity of the crowdfunding system

Ohio Valley Native Americans Speak: Indigenous Discourse on the Continuity of Identity

Thesis (PhD) - Indiana University, Anthropology, 2006Since the 1960's there has been an increase in the assertion of a Native American identity across North America. This identification has been expressed in the Ohio Valley region (Indiana, Ohio, and Kentucky) through performance at powwows, re-enactments and restored ceremonies. For the most part in the United States, acceptance of American Indian identification is founded on government recognition, racial appearance, or language. As no Native American languages are still spoken in the region, the "racial" appearance of Ohio Valley Native people is "mixed" or ambiguous, and government recognition is absent for most groups, the question arises of how an Ohio Valley Native identity has developed and been maintained over time. In pursuit of answers to this question, data were gathered at powwows, historic re-enactments, living history enactments, and other events where Ohio Valley Native people participate. Newsletters of Indian organizations and books influencing the expression of a Native Ohio identity also served as sources of primary data. Ethnohistorical research further illuminated the factors that shaped elements of Native American identity in the Ohio Valley. The analysis of interviews and the other data demonstrate that the claim to Native American identity in the Ohio Valley is not, as some have suggested, a newly emergent construction. Rather, Native American identity has been maintained performatively in some quarters for many generations while remaining submerged in others. This Native identity continues to be constructed and performed drawing from a combination of Ohio Valley "folk" culture, Appalachian rural culture and "Pan-Indian" powwows. Similarities and connections were also found to exist with other mixed North American peoples, such as the Métis of Canada and the northern US, and those asserting an Ohio Valley Native identity. These findings counter widely held conceptions that there are no "real Indians" in the Ohio Valley, call into question the bases on which such claims are made, and provide a basis for new understandings of how claims to identity are negotiated among Indigenous peoples in North America

Guidance, flight mechanics and trajectory optimization. Volume 1 - Coordinate systems and time measure

Coordinate measuring system for flight control, and trajectory optimizatio

Simulating Fleet Noise for Notional UAM Vehicles and Operations in New York

This paper presents the results of systems-level simulations using Metrosim that were conducted for notional Urban Air Mobility (UAM)-style vehicles analyzed for two different scenarios for New York (NY). UAM is an aviation industry term for passenger or cargo-carrying air transportation services, which are often automated, operating in an urban/city environment. UAM-style vehicles are expected to use vertical takeoff and landing with fixed wing cruise flight. Metrosim is a metroplex-wide route and airport planning tool that can also be used in standalone mode as a simulation tool. The scenarios described and reported in this paper were used to evaluate a fleet noise prediction capability for this tool. The work was a collaborative effort between the National Aeronautics and Space Administration (NASA), Intelligent Automation, Inc (IAI), and the Port Authority of New York and New Jersey (PANYNJ). One scenario was designed to represent an expanded air-taxi operation from existing helipads around Manhattan to the major New York airports. The other case represented a farther term vision case with commuters using personal air vehicles to hub locations just outside New York, with an air-taxi service running frequent connector trips to a few key locations inside Manhattan. For both scenarios, the trajectories created for the entire fleet were passed to the Aircraft Environmental Design Tool (AEDT) to generate Day-Night Level (DNL) noise contours for inspection. Without data for actual UAM vehicles available, surrogate AEDT empirical Noise-Power-Distance (NPD) tables used a similar sized current day helicopter as the Baseline, and a version of that same data linearly scaled as a first guess at possible UAM noise data. Details are provided for each of the two scenario configurations, and the output noise contours are presented for the Baseline and reduced noise DNL cases