333 research outputs found

    Equipment concept design and development plans for microgravity science and applications research on space station: Combustion tunnel, laser diagnostic system, advanced modular furnace, integrated electronics laboratory

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    Taking advantage of the microgravity environment of space NASA has initiated the preliminary design of a permanently manned space station that will support technological advances in process science and stimulate the development of new and improved materials having applications across the commercial spectrum. Previous studies have been performed to define from the researcher's perspective, the requirements for laboratory equipment to accommodate microgravity experiments on the space station. Functional requirements for the identified experimental apparatus and support equipment were determined. From these hardware requirements, several items were selected for concept designs and subsequent formulation of development plans. This report documents the concept designs and development plans for two items of experiment apparatus - the Combustion Tunnel and the Advanced Modular Furnace, and two items of support equipment the Laser Diagnostic System and the Integrated Electronics Laboratory. For each concept design, key technology developments were identified that are required to enable or enhance the development of the respective hardware

    HOME SECURITY SYSTEM: SMOKE DETECTOR CIRCUIT, TEMPERATURE DETECTOR CIRCUIT WITH KEYPAD AND LCD INTERFACE

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    The Home Security System is design to develop a security system that is affordable and easy to use. This system will provide protection when user is at home and not at home. It will have a LCD display as an easy and friendly interface and a keypad as a main controller to the whole system. The keypad will allow a communication between the user and the system. This project is divided into three main parts which are the smoke detector circuit implementation, temperature detector implementation and the LCD and keypad implementation. The three parts have slightly different methodology but in overall, the project started by doing research on the circuits, the implementation of the circuits and the implementation of the LCD display and keypad. The system will have a complete home security system that will enable user to control the circuits with a keypad. In future, more circuits will be included in the system that will provide more diversity in home security system

    Apollo experience report: Guidance and control systems: Command and service module entry monitor subsystem

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    The conceptual aspects of the command and service module entry monitor subsystem, together with an interpretation of the displays and their associated relationship to entry trajectory control, are presented. The entry monitor subsystem is described, and the problems encountered during the developmental phase and the first five manned Apollo flights are discussed in conjunction with the design improvements implemented

    Fire Detection and Suppression Drone

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    The goal of this Major Qualifying Project (MQP) is to create a drone equipped with an automatic flame sensing and water spraying system to overcome the major problems faced during firefighting. These problems faced by firefighting include lack of knowledge about the building construction, fire intensity, and knowing about the building tenability and victim viability. Work on the drone deals with the proof of concept, exhibiting the scalability of this system for large scale fires. During testing of heights 10 feet or below, the drone performed most effectively. The drone that we built was capable of suppressing small fires at a distance of 4 feet from the fire. This is achieved with a custom-designed spraying system controlled by a flame sensor

    Aircraft electromagnetic compatibility

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    Illustrated are aircraft architecture, electromagnetic interference environments, electromagnetic compatibility protection techniques, program specifications, tasks, and verification and validation procedures. The environment of 400 Hz power, electrical transients, and radio frequency fields are portrayed and related to thresholds of avionics electronics. Five layers of protection for avionics are defined. Recognition is given to some present day electromagnetic compatibility weaknesses and issues which serve to reemphasize the importance of EMC verification of equipment and parts, and their ultimate EMC validation on the aircraft. Proven standards of grounding, bonding, shielding, wiring, and packaging are laid out to help provide a foundation for a comprehensive approach to successful future aircraft design and an understanding of cost effective EMC in an aircraft setting

    Research and technology at Kennedy Space Center

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    As the NASA Center responsible for assembly, checkout, servicing, launch, recovery, and operational support of Space Transportation System elements and payloads, Kennedy Space Center is placing increasing emphasis on the Center's research and technology program. In addition to strengthening those areas of engineering and operations technology that contribute to safer, more efficient, and more economical execution of current mission, the technical tools are developed needed to execute Center's mission relative to future programs. The Engineering Development Directorate encompasses most of the laboratories and other Center resources that are key elements of research and technology program implementation and is responsible for implementation of the majority of the projects in this Kennedy Space Center 1989 Annual Report

    STS-51 Space Shuttle Mission Report

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    The STS-51 Space Shuttle Program Mission Report summarizes the payloads as well as the orbiter, external tank (ET), solid rocket booster (SRB), redesigned solid rocket motor (RSRM), and the space shuttle main engine (SSME) systems performance during the fifty-seventh flight of the space shuttle program and seventeenth flight of the orbiter vehicle Discovery (OV-103). In addition to the orbiter, the flight vehicle consisted of an ET designated as ET-59; three SSME's, which were designated as serial numbers 2031, 2034, and 2029 in positions 1, 2, and 3, respectively; and two SRB's which were designated BI-060. The lightweight RSRM's that were installed in each SRB were designated as 360W033A for the left SRB and 360L033B for the right SRB

    2008-2009

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    Contains information on courses and class descriptions as well as campus resources at Collin College.https://digitalcommons.collin.edu/catalogs/1020/thumbnail.jp

    Analysis of Costco, San Francisco

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    This report provides an in-depth analysis of the fire safety systems and design considerations of the Costco store located at 450 10th Street in San Francisco, California, satisfying the requirements for completion of the FPE 596 – Culminating Experience in Fire Protection Engineering academic series. The building is introduced, followed by an analysis of the building structure, alarm and detection, egress, and sprinkler systems are designed based on prescriptive code. These systems are then analyzed from a performance based perspective to gain understanding of how the systems will respond to a challenging design fire. Their response is used to determine if the building is compliant with requirements of performance based design. The Costco store is a large warehouse style building of mixed occupancy. The fully sprinklered 122,000 sq. ft. building is of noncombustible construction and is used for multiple occupancies. The primary occupancy of the large, warehouse-style building is for mercantile purposes. As seen in Figure 1, the store features an open floor plan with goods such consumer electronics, clothing, home, office, and work supplies, fresh and packaged foods and beverage are stored throughout the store in floor display and high piled rack storage orientations. Office, kitchen, and dining occupancies constitute a portion of the building, along with some areas designated service occupancies as shown in Figure 2. The study begins with an introduction to the structure of the building. Occupancy classification is determined, which combined with height and area data is used to determine allowable types of construction and the materials used. An array of prescriptive codes is examined and the structure of the building is found to be acceptable. After the structure of the building is fully explored, the life safety systems that impact occupant safety during a fire are discussed. An alarm and detection system is designed for compliance with prescriptive code. The alarm and detection section first identifies components used in the system, such as heat detectors, horn- strobes, and the fire alarm control panel. The locations of the system components are presented, and the expected response of the system to a fire is calculated. Adequate backup power is provided and maintenance of the system is established. Application of a Voice Alarm Communication Systems (EVACS) is considered but deemed unnecessary. After the alarm and detection design, the Costco is analyzed for its ability to allow for safe egress of occupants. The maximum occupancy of the building is determined, and the number, size, and location of exits are evaluated with consideration to the expected demographics of the store. Expected evacuation time is calculated, and tenability of occupants in a fire environment is discussed. 7 Once egress is investigated, a sprinkler system is designed with the goals of reducing the risk of harm to life and property. The sprinkler system components are discussed and the systems are laid out based on the occupancy and materials found the building. The hydraulic demands of the systems are calculated using hand calculations and sprinkler system modeling software, followed by a discussion of inspection, testing, and maintenance protocol. Recommendations are made to improve the sprinkler system performance. With these life safety systems designed and analyzed from a prescriptive approach, their effectiveness is put the test using performance based design. In the fire scenario, an ultra-fast growth rate fire with high heat release rate and output of toxic gases, based on full-scale testing of electrical equipment similar to that found in the Costco, is located in front of the main exit from the building, blocking its use. The Costco is filled to maximum occupancy. The required safe egress time of 5.5 minutes is demonstrated to be less than the available safe egress time, based on the height of the smoke layer filling the store. Recommendations are then made for furthering the research of this report and exploring other design fires and performance criteria

    Project Morpheus: Morpheus 1.5A Lander Failure Investigation Results

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    On August 9, 2012 the Morpheus 1.5A vehicle crashed shortly after lift off from the Kennedy Space Center. The loss was limited to the vehicle itself which was pre-declared to be a test failure and not a mishap. The Morpheus project is demonstrating advanced technologies for in space and planetary surface vehicles including: autonomous flight control, landing site hazard identification and safe site selection, relative surface and hazard navigation, precision landing, modular reusable flight software, and high performance, non-toxic, cryogenic liquid Oxygen and liquid Methane integrated main engine and attitude control propulsion system. A comprehensive failure investigation isolated the fault to the Inertial Measurement Unit (IMU) data path to the flight computer. Several improvements have been identified and implemented for the 1.5B and 1.5C vehicles
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