Experimental clean combustor program, phase 2

The alternate fuels investigation objective was to experimentally determine the impacts, if any, on exhaust emissions, performance, and durability characteristics of the hybrid and vorbix low pollution combustor concepts when operated on test fuels which simulate composition and property changes which might result from future broadened aviation turbine fuel specifications or use of synthetically derived crude feedstocks. Results of the program indicate a significant increase in CO and small NOX increase in emissions at idle for both combustor concepts, and an increase in THC for the vorbix concept. Minimal impact was observed on gaseous emissions at high power. The vorbix concept exhibited significant increase in exhaust smoke with increasing fuel aromatic content. Altitude stability was not affected for the vorbix combustor, but was substantially reduced for the hybrid concept. Severe carbon deposition was observed in both combustors following limited endurance testing with No. 2 home heat fuel. Liner temperature levels were insensitive to variations in aromatic content over the range of conditions investigated

Experimental clean combustor program, phase 1

A program of screening three low emission combustors for conventional takeoff and landing, by testing and analyzing thirty-two configurations is presented. Configurations were tested that met the emission goals at idle operating conditions for carbon monoxide and for unburned hydrocarbons (emission index values of 20 and 4, respectively). Configurations were also tested that met a smoke number goal of 15 at sea-level take-off conditions. None of the configurations met the goal for oxides of nitrogen emissions at sea-level take-off conditions. The best configurations demonstrated oxide of nitrogen emission levels that were approximately 61 percent lower than those produced by the JT9D-7 engine, but these levels were still approximately 24 percent above the goal of an emission index level of 10. Additional combustor performance characteristics, including lean blowout, exit temperature pattern factor and radial profile, pressure loss, altitude stability, and altitude relight characteristics were documented. The results indicate the need for significant improvement in the altitude stability and relight characteristics. In addition to the basic program for current aircraft engine combustors, seventeen combustor configurations were evaluated for advanced supersonic technology applications. The configurations were tested at cruise conditions, and a conceptual design was evolved

Lessons from the past, architecture for the future. Coupling historic preservation with sustainable architecture

[EN] Restoration of built heritage can serve not only to preserve historical documents of the past but also to provide models for new sustainable architecture. Vernacular and, more generally, historic architecture is by its nature sustainabile and resilient. It is largely the result of experience and acquired knowledge, and shows how local resources can be used in a thoughtful and rational way in new construction. For this reason, it can inspire low-energy solutions necessary to address the current climate crisis. Conservation projects, in their turn, allow us to analyze the fabric of historic buildings, to understand which materials were used, how they were transformed and assembled, and how they offered the best response to the needs of use and resistance to the elements and natural hazards. In this paper, conservation of traditionaly-built architecture and new sustainable architecture are discussed as two partners pursuing the common goal of reducing the effects of climate change. The author investigates the way conservation and analysis of historic buildings allows us to interpret the complex and articulated reality of regional architecture. By retrieving the  analysis of historic construction as a fundamental component for understanding architecture and adopting manual graphic records as a tool for expressing the complexity of the fabric of a building, it is possible to identify local building traditions and inspire new sustainable architecture.Vitti, P. (2022). Lessons from the past, architecture for the future. Coupling historic preservation with sustainable architecture. En Proceedings HERITAGE 2022 - International Conference on Vernacular Heritage: Culture, People and Sustainability. Editorial Universitat Politècnica de València. 521-528. https://doi.org/10.4995/HERITAGE2022.2022.1564152152

FRG Turbojet

Members of the Cal Poly SLO campus club FRG work together with students of several different disciplines to build a functional turbojet engine. Engineering approaches include design, fabrication, testing, and computer sensing, control, and integration. The goal of the project is to produce a running turbojet engine monitored and controlled by embedded hardware and specialized PC software. This project is to be used by later groups for further research and development

Assessing Even Flat-Fan Nozzles for Spot Spray Herbicide Applications

Herbicide efficiency in row-crop agriculture can be improved using precision technologies for controlling weeds and minimize agronomic, economic, and environmental impacts. Site-specific weed management technologies, such as spot-sprayers, allow herbicides to be sprayed only where weeds are present in the field. Understanding application parameters and their influence on weed control for site-specific spot-spray applications is essential. This research involved laboratory and greenhouse studies to investigate the coverage and coefficient of variation (CV) of even flat-fan spray nozzles under different spot-spray application scenarios, as well as the effect of weed size and application method on the control of various weed species using a pulse width modulation system to control herbicide rate. Adjusting the nozzle angle from 0° to 30° rearward resulted in a mean reduction of 7% in spray coverage for both AI6502E and TP6502E nozzles. This adjustment also led to a 6% decrease in CV for the AI6502E nozzle, while it had no impact on the TP6502E nozzle CV. Additionally, a 25% average increase in CV was observed when the boom height was reduced from 75 cm to 25 cm. Greenhouse research revealed that weeds exhibited high sensitivity to 2,4-D, dicamba, and clethodim, regardless of weed size and application method. In contrast, glyphosate and glufosinate provided superior control when applied at early growth stages, underscoring the importance of early postemergence herbicide management for these herbicides in variable-rate applications. The research findings from both studies enhance our understanding of how various application parameters can influence spot-spray operations and the sensitivity of weeds to different herbicides at different growth stages. This knowledge is crucial for establishing effective herbicide variable-rate strategies, optimizing weed control, and minimizing herbicide use. Advisor: Christopher A. Procto

Conflict of Laws - Jurisdiction - Minimum Contacts

The outer limits of constitutionally valid jurisdiction are not exceeded by asserting jurisdiction over a service corporation doing business solely in a foreign state, if such corporation does a negligent act in the foreign state which causes injury in the state of the forum. Roche v. Floral Rental Corporation, 95 N.J. Super. 555, 232 A.2d 162 (1967), appeal docketed, No.___, N.J. Sup. Ct. (1967)

Letter from Anthony M. Vitti to John Murtha, July 30, 1993

Letter from Anthony M. Vitti, Chairman of the California State University Board of Trustees, in support of the establishment of a CSU campus on the Fort Ord military base.https://digitalcommons.csumb.edu/samfarr_corr_all/1003/thumbnail.jp

Silver Scabs

The eyes stay closed for a long time. oils, my leftover scraps, drops of saliva and grit forming a shell, eyelashes sealing to my lids. Fingertips, friction ridges vibrating, wanting. I am trying to touch everything, touch myself, I touch another. I lie, pressing hard and soft, things feel the same. they smell different. They spoil, fresh to rot and back again. They taste so different but are the same, different only in response. I lick my lips and the spit dries on the corners of my mouth. My cleft palate all sewed up. Precious little threads holding it together, little hairs. Skin of a peach. Hard and soft at once, Can I swallow it whole? Will the pit catch in my throat? Friction ridges of a pit, does a fingertip feel any different? Maybe it will touch my insides better than I can. Maybe it will become a new fingerprint, buried in my belly. My eyes still closed, crusty flecks, my orifices and bits of skin moving, inhaling. Boundary is in the distance. Repulsive, I stare at it, I can’t stop. I want it, I want to feel it, it makes me nauseous. Repelling and magnetic, I can’t see it, too dark and bright at once. I stare at it. I don\u27t need my eyes. I want to vomit and it comes out of me, but its not what I thought it was. I sink my hand into it. It breaks open, boundary transformed. I am covered in it, so wet, filling me in and out. It catches in the clefts, and slits, the corners of my lips and cuticles. Writhing and slippery at first, it settles and dries and begins to crack. Its always changing, like little silver scabs floating away. My eyes no longer encrusted, I see the bits and pieces falling off my senses. They look back at me. Little flakes showing my insides and outsides. They drift off, they are glinting with something new. I see through my boundary, no more insides or outsides