Fluid slip ring transfers coolant to rotating equipment

Rotating fluid coupler, consisting of rotor and housing made of aluminum, that is concentric with electrical slip-ring assembly, transfers cooling fluid to instrumentation undergoing environmental tests on rotating platform. Rotating fluid coupler permits unlimited platform revolutions and eliminates danger of lines being pulled loose from supplies

Microwave and millimeter-wave power generation in silicon carbide (SiC) IMPATT devices

There are two points that should be noted. First, in the thermal resistance calculations it is assumed that the device is operating at 773 K while the results of the room temperature simulations are used. This was done because there is not enough information to correctly predict the material parameters at 773 K. Since, in general, device performance degrades with increasing temperature, the cw results are perhaps a bit optimistic. Second, the electric field in these structures gets extremely high and there might be some possibility of tunneling. This was not incorporated into the simulation. Again, this could result in different device operating conditions

In/Secure Conversations:Retheorising Life and Debt, Tourism and Caribbean Geopolitics

The Caribbean has figured prominently in narratives of security, mobility and transnational connections. Referred to as the ‘Third Border’ in US foreign policies, and inhabiting contradictory geopolitical spaces between North and South America, the region also negotiates narratives of in-betweenness and in/security in relation to more ‘leisurely’ pursuits, notably tourism. This paper analyses the ways in which representations of in/security have framed media images of Caribbean tourism by revisiting two case studies: the critically acclaimed documentary film, Life and Debt and recent security discussions around tourism in Jamaica. While geopolitics and tourism studies have largely tended to remain distinct areas of research, Life and Debt illustrates the significance and urgent need to exhume the interdependency of both. Media representations, Caribbean literature and policy decision-making are part of ongoing conversations that illustrate the limitations of over-generalised notions of security, time and space. Antonio Benítez-Rojo’s concept of ‘repeating islands’ is drawn upon to critically analyse how representations of geopolitics in the Caribbean are part of a series of interconnected and multi-layered conversations. The Caribbean is an archipelagic region that has often found itself in uneven and contradictory conversations about security, mobility and control, and as such affords an important context for analysing the compromises and negotiations involved in national, regional, and global conversations around in/security. Critically engaging with how we conceptualise conversations, and examining their repetitive and contradictory nature, also opens up new possibilities for interrogating the ways in which tourism narratives have reinforced, recreated, and stifled diverse, secure and inclusive social spaces. Two key questions provide the focus for this paper: 1) in what ways can the concepts of conversation and repetition enable a critical analysis of the connections between popular media and geopolitical discourses of Caribbean in/security and tourism?2) how are the connections and contradictions of geopolitical discourses and national tourism strategies illustrated through media and policy images of place, specifically Life and Debt and official Jamaican tourism statements? To tease out the ways in which these Caribbean conversations offer a provocative and productive forum for engaging and mobilising more inclusive understandings of security the following analysis is divided into four sections. The first section provides an overview of the conceptual framework for the paper and sets out the ways in which we may think of conversations as social and strategic tools. The concept of repeating islands is also introduced as a device for framing Caribbean identities. The second section contextualises Life and Debt and analyses the film’s relevance for wider stories of Caribbean in/securities. The conversations emerging from these earlier sections are then developed further in the third section, which examines their importance for interrogating the dynamics of geopolitics and tourism studies in a Caribbean-global context. The fourth, and final section, reflects on the implications and possibilities for thinking and working through creative and constructive Caribbean conversations

Results from the EPL monkey-pod experiment conducted as part of the 1974 NASA-Ames CVT/GPL 3

For abstract, see vol. 2

Results from the EPL monkey-pod experiment conducted as part of the 1974 NASA/Ames shuttle CVT-2

The participation of the Environmental Physiology Laboratory (EPL) in the general purpose laboratory concept verification test 3 is documented. The EPL Monkey-Pod Experiment was designed to incorporate a 10-12 kg, pig tailed monkey, Macaca nemestrina, into the pod and measure the physiological responses of the animal continuously. Four major elements comprise the EPL Monkey-Pod Experiment System: (1) a fiberglass pod containing the instrumented monkey plus feeder and watering devices, (2) an inner console containing the SKYLAB mass spectrometer with its associated valving and electronic controls, sensing, control and monitoring units for lower body negative pressure, feeder activity, waterer activity, temperatures, and gas metabolism calibration, (3) an umbilical complex comprising gas flow lines and electrical cabling between the inner and outer console and (4) an outer console in principle representing the experiment support to be provided from general spacecraft sources

Conversing with Caribbean and Northern Scottish Landscapes and Lifescapes

This conversation–and the 2015 Landscapes and Lifescapes Symposium (in Inverness) out of which it grew—offers a starting point for us to collaboratively explore transatlantic histories and geographies and to open up other interdisciplinary conversations addressing how we understand our relationships to identity, history and place. The discussion addresses five key questions that provide a broad scope for thinking about how the relationships between the Anglo-Caribbean and Northern Scotland have been depicted historically, and how the idea of landscapes and lifescapes may help us to diversify this dialogue further. These questions are: 1) what can we learn from investigating the entangled histories and geographies of Scotland and the Anglophone Caribbean; 2) how are these two places—and the islands that surround them—linked; 3) how do we shift depictions of Scottish history to include Caribbean people, movements, systems and perspectives; 4) what is lost in representations of the Caribbean and Scotland as ‘peripheral’ British territories; and, 5) what role can community-based collaborative research projects play in our societal understanding of landscapes and lifescapes (in all forms) in both region

Instrumentation design study for testing a hypersonic ramjet engine on the x-15 a-2. volume 2- preliminary design of in-flight thrust/drag measuring device

Inflight thrust and drag measuring device for hypersonic ramjet engine on X-15A-2 aircraf

Results from the EPL monkey-pod flight experiments conducted aboard the NASA/Ames CV-990, May 1976

The participation of the Environmental Physiology Laboratory (EPL) in the general purpose laboratory concept verification test 3 is documented. The EPL Monkey-Pod Experiment was designed to incorporate a 10-12 kg, pig tailed monkey, Macaca nemestrina, into the pod and measure the physiological responses of the animal continously. Four major elements comprise the EPL Monkey-Pod Experiment System: (1) a fiberglass pod containing the instrumented monkey plus feeder and watering devices, (2) an inner console containing the SKYLAB mass spectrometer with its associated valving and electronic controls, sensing, control and monitoring units for lower body negative pressure, feeder activity, waterer activity, temperatures, and gas metabolism calibration, (3) an umbilical complex comprising gas flow lines and electrical cabling between the inner and outer console and (4) an outer console in principle representing the experiment support to be provided from general space craft sources

Cells in Space

Discussions and presentations addressed three aspects of cell research in space: the suitability of the cell as a subject in microgravity experiments, the requirements for generic flight hardware to support cell research, and the potential for collaboration between academia, industry, and government to develop these studies in space. Synopses are given for the presentations and follow-on discussions at the conference and papers are presented from which the presentations were based. An Executive Summary outlines the recommendations and conclusions generated at the conference

Metabolic and cardiovascular adaptation, monkey. NASA SMD 3, project 76, experiment 44 conducted at NASA/JSC, 14-25 May 1977

The biomedical results from an experiment on a monkey subjected to space flight conditions are reported. A background history of the development and testing of an experiment system designed to permit measurement of physiological parameters in subhuman primates during continuous, comfortable, couch restraint for periods of up to 30 days is reviewed. Of major importance in the experimental design of the system was the use of a fiberglass pod, which could be sealed and subdivided into upper and lower parts, to monitor and control the physiological responses for various parts of the animal's body. The experiment was conducted within the Spacelab Simulator for a period of 11 days. Data recorded includes: Spacelab Simulator cabin temperature; ventilation rate; pod internal temperature; fraction percent oxygen; fraction percent carbon dioxide; oxygen consumption rate; carbon dioxide production rate; respiratory quotient; intrathoracic temperature; heart rate; mean aortic pressure; mean ventricular pressure; diurnal variation of parameters measured; comparison of mean preflight, flight, and postflight values of the parameters measured; and correlation matrix for the parameters measured