10,603 research outputs found

    Space shuttle orbit maneuvering engine reusable thrust chamber. Task 13: Subscale helium ingestion and two dimensional heating test report

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    Descriptions are given of the test hardware, facility, procedures, and results of electrically heated tube, channel and panel tests conducted to determine effects of helium ingestion, two dimensional conduction, and plugged coolant channels on operating limits of convectively cooled chambers typical of space shuttle orbit maneuvering engine designs. Helium ingestion in froth form, was studied in tubular and rectangular single channel test sections. Plugged channel simulation was investigated in a three channel panel. Burn-out limits (transition of film boiling) were studied in both single channel and panel test sections to determine 2-D conduction effects as compared to tubular test results

    Regenerative cooling design and analysis computer program

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    Program evaluates influences of heat transfer, stress, and cycle life. Coolant passages may be tubes or channels, with or without gas-side wall coating. Program options include two-dimensional thermal analysis model of tube or channel cross-section using relaxation technique with variable number of nodes

    Task 12 data dump (phase 2) OME integrated thrust chamber test report

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    The characteristics and performance of the orbit maneuvering engine for the space shuttle are discussed. Emphasis is placed on the regeneratively cooled thrust chamber of the engine. Tests were conducted to determine engine operating parameters during the start, shutdown, and restart. Characteristics of the integrated thrust chamber and the performance and thermal conditions for blowdown operation without supplementary boundary layer cooling were investigated. The results of the test program are presented

    Tank 12 data dump OME integrated thrust chamber test report, phase 1

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    The test program conducted to characterize the steady state stability, thermal, and performance characteristics of the integrated thrust chamber assembly, as well as limited tests to investigate transient characteristics are described

    Space shuttle orbit maneuvering engine reusable thrust chamber program

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    Analyses and preliminary designs of candidate OME propellant combinations and corresponding engine designs were conducted and evaluated in terms of performance, operating limits, program cost, risk, inherent life and maintainability. For the Rocketdyne recommended and NASA approved propellant combination and cooling concept (NTO/MMH regeneratively cooled engine), a demonstration thrust chamber was designed, fabricated, and experimentally evaluated to define operating characteristics and limits. Alternate fuel (50-50) operating characteristics were also investigated with the demonstration chamber. Adverse operating effects on regenerative cooled operation were evaluated using subscale electrically heated tubes and channels. An investigation of like doublet element characteristics using subscale tests was performed. Full scale 8- and 10-inch diameter like-doublet injectors for the OME were designed, fabricated, and tested. Injector stability was evaluated analytically and experimentally

    Human Rights and Literature (Fall 2011)

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    In this class, we will be reading literary and cultural documents to contemplate the concept of “human rights.” What rights do all humans have, simply by virtue of being human? Who counts as human? Do current understandings of human rights exclude some people? Do humans have more rights than other species? How do questions of gender and sexuality fit into the discussion of human rights? As we seek to answer these questions, we will trace the development of human rights discourses from the Enlightenment to the present, looking at literature from a variety of cultures and human rights documents from a variety of sources. We will supplement our readings with outreach to local human rights organizations. A photo of this Fall 2011 class was taken as part of Professor Bob Tobin\u27s ongoing class photo tradition

    Sexuality, Gender and Human Rights (Spring 2006) (Whitman College)

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    This course was taught by Robert Tobin at Whitman College. Professor Tobin worked at Whitman for 18 years as associate dean of the faculty and chair of the humanities, and was named Cushing Eells Professor of the Humanities. Several of the courses he developed at Whitman would make the transition to Clark, where they continued to evolve. The goal of this course is to learn how to use gender as a critical category to think about sexuality, human rights, and the intersection between the two. We will operate interdisciplinarily, studying philosophical, historical, literary, and legal texts. We will be constantly studying the historicity and constructedness of these categories. We will also be aware of the universalizing implications of these categories and pay special attention to the particularities of individual cases. After thinking about human rights internationally, we will focus on a variety of issues that have played out within the American political era, and determine how human rights function domestically. Among the primary concerns that we will address are: sexual hierarchies, sexual panics, privacy, consent, abortion, interracial marriage, sodomy, and gay marriage. There will be a unit on how transexuality and intersexuality affect our thinking on sexual rights

    Section 9-103 and the Interstate Movement of Goods

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