| Discrete Film Cooling in a Rocket with Curved Walls |
Dec-2009 |
178 pages |
| Authors:
Jonathan F McCall; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
 | This study quantified the effects of discrete wall-based film cooling in a rocket with curved walls. Simulations and experiments showed decreasing with wall radius of curvature, holding jet diameter constant, improves net heat flux reduction (NHFR) and adiabatic effectiveness (eta) for 90 compound injected cylindrical jets, though is reduced at the highest curvature. NHFR and eta improved further with a high favorable stream-wise pressure gradient (K=2.1x10-5) at all tested blowing ... |
|
| Simulated E-Bomb Effects on Electronically Equipped Targets |
Sep-2009 |
126 pages |
| Authors:
Enes Yurtoglu; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF INFORMATION SCIENCES
|
| Like High Altitude Electromagnetic Pulse (HEMP), high power microwaves (HPM) produce intense energies, which may overload or damage various electrical system components such as microcircuits. This thesis investigates possible effects of a hypothetically designed HEMP-like weapon, an e-bomb, on electronically equipped target systems. The procedure to determine these possible effects is to estimate the electromagnetic coupling from first principles and simulations using a coupling model program (CEMPAT), pursuing a feasible ... |
|
| NPS-SCAT: Electrical Power System |
Sep-2009 |
103 pages |
| Authors:
Dorn; Lawrence T Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA SPACE SYSTEMS ACADEMIC GROUP
|
| The Naval Postgraduate School Solar Cell Array Tester (NPS-SCAT) seeks to expand the CubeSat knowledge base and provide learning possibilities at the Naval Postgraduate School. This thesis discusses the design, testing, and integration of the electrical power sub-system for NPS-SCAT. The current design will be powered by a commercial-off-the-shelf power system developed by Clyde Space systems. Solar power generation will be via Spectrolab's improved triple junction solar cells. Satellite Tool ... |
|
| Evaluation of Output Phase Stability in a Fiber-Optic Two-Way Frequency Distribution System |
01-Dec-2008 |
9 pages |
| Authors:
Sven-Christian Ebenhag; Kenneth Jaldehag; Per Jarlemark; Per O Hedekvist; Carsten Rieck; Hakan Skoogh; SP TECHNICAL RESEARCH INST OF SWEDEN BORAS (SWEDEN)
|
| The assembly of a real-time actively controlled fiber-optic frequency transfer link based on additions to an existing static solution is proposed and evaluated. The dynamic variations of transmission delays, caused mainly by temperature dependence of the fiber, is continuously measured and used to adjust a delay at the transmitter for net cancellation of the effect. The resulting link shows no visible temperature dependence; however, the feedback induces added noise at ... |
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| Evaluating Real-Time Platforms for Aircraft Prognostic Health Management Using Hardware-In-The-Loop |
Aug-2008 |
10 pages |
| Authors:
Mitch Wolff; Michael Corbett; Michael Boyd; Peter Lamm; Tommy Baudendistel; KRAUSE (P C) AND ASSOCIATES WEST LAFAYETTE IN
|
| Aircraft power demands continue to increase with the increase in electrical subsystems. These subsystems directly affect the behavior of the power and propulsion systems and can no longer be neglected or assumed linear in system analyses and prognostic health management (PHM) schemes. The complex models designed to integrate new capabilities have a high computational cost. Hardware-in-the-loop (HIL) is being used to investigate aircraft power systems by using a combination of ... |
|
| Hardware-in-the-Loop Power Extraction Using Different Real-Time Platforms (PREPRINT) |
Jul-2008 |
9 pages |
| Authors:
Mitch Wolff; Michael Corbett; John McNichols; Peter Lamm; Caleb Barnes; Thomas Baudendistel; KRAUSE (P C) AND ASSOCIATES WEST LAFAYETTE IN
|
| Aircraft power demands continue to increase with the increase in electrical subsystems. These subsystems directly affect the behavior of the power and propulsion systems and can no longer be neglected or assumed linear in system analyses. The complex models designed to integrate new capabilities have a high computational cost. Hardware-in-the-loop (HIL) is being used to investigate aircraft power systems by using a combination of hardware and simulations. This paper considers ... |
|
| U.S.-French Commercial Ties |
19-May-2008 |
|
| Authors:
Raymond J Aheam; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
 | U.S. commercial ties with France are extensive, mutually profitable, and growing. With over $ 1.2 billion in commercial transactions taking place between the two countries every day of the year, each country has an increasingly large stake in the health and openness of the other's economy. France is the 9th largest merchandise trading partner for the United States and the United States is France's largest trading partner outside the European ... |
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| High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments |
26 MAR 2008 |
|
| Authors:
Clay Wilson; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| Electromagnetic Pulse (EMP) is an instantaneous, intense energy field that can overload or disrupt at a distance numerous electrical systems and high technology microcircuits, which are especially sensitive to power surges. A large scale EMP effect can be produced by a single nuclear explosion detonated high in the atmosphere. This method is referred to as High-Altitude EMP (HEMP). A similar, smaller-scale EMP effect can be created using non-nuclear devices with ... |
|
| High-Density Power Supplies Using Silicon Carbide (SiC) Delivery Order 0001 |
MAR 2008 |
70 pages |
| Authors:
David C. Sheridan; SEMISOUTH LABORATORIES STARKVILLE MS
|
| This program was designed to improve the reliability and performance of electrical power systems and components, while reducing operational life cycle costs for a wide variety of aircraft and space electrical power-system generation, conditioning, and utilization equipment applications. To achieve these objectives, research efforts were conducted for the advancement of silicon carbide (SiC) power device technology in the technical areas of advanced design, manufacturability, and component reliability. This delivery order ... |
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| Hull, Mechanical, and Electrical Equipment Standardization in the U.S. Navy Surface Force: A Case of Competing Objectives and Stakeholder Trade-Off Decisions |
14 DEC 2007 |
156 pages |
| Authors:
Jerome R. White; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS
|
| The lack of a successful Standardization Program for Hull, Mechanical, and Electrical (HM&E) equipment and components of ships in the surface force costs the United States Navy hundreds of millions of dollars annually. Approximately half of the total parts in the surface fleet are installed on three or fewer ships and nearly 20 percent are one of a kind. These parts are not officially considered to be "non-standard" since they ... |
|
| Quantum Computing in Diamond |
28 MAY 2007 |
13 pages |
| Authors:
Steven Prawer; MELBOURNE UNIV VICTORIA (AUSTRALIA)
|
| The aim of this proposal is to demonstrate the key elements needed to construct a logical qubit in diamond by exploiting the remarkable quantum properties of the nitrogen-vacancy (NV) optical centre. Specifically, the focus of the work was to address the materials and fabrication issues. We have demonstrated (i) that individual NV qubits can be fabricated by ion implantation with long coherence times (>350 microseconds at room temperature), (ii) electrical ... |
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| Defending Critical Infrastructure |
01-Dec-2006 |
16 pages |
| Authors:
Gerald Brown; Matthew Carlyle; Javier Salmeron; Kevin Wood; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OPERATIONS RESEARCH
|
| We apply new bilevel and trilevel optimization models to make critical infrastructure more resilient against terrorist attacks. Each model features an intelligent attacker (terrorists) and a defender (us), information transparency, and sequential actions by attacker and defender. We illustrate with examples of the US Strategic Petroleum Reserve, the US Border Patrol at Yuma, Arizona, and an electrical transmission system. We conclude by reporting insights gained from the modeling experience and ... |
|
| Deployment and Intelligent Nanosatellite Operations Colorado Final Technical Report |
28 SEP 2006 |
191 pages |
| Authors:
Elaine Hansen; Dave Beckwith; Christ Koehler; Steve Levin-Stankevich; Jennifer Michels; Steve Wichman; COLORADO UNIV AT BOULDER
|
| The main purpose of the DINO satellite was to generate topographic maps of the tops of clouds through stereoscopic imaging based on photographs from the on-board digital cameras, with most processing done on the satellite itself. The attitude determination and control system was designed to be responsible for maintaining the spacecraft's orientation in order to achieve mission objectives. The system consisted of a magnetometer and three single axis rate gyroscopes. ... |
|
| Electrical Modeling and Simulation With Matlab/Simulink and Graphical User Interface Software |
30 JUN 2006 |
4 pages |
| Authors:
Jason Ueda; David Daniszewski; John Monroe; Abul Masrur; Eric Charbeneau; Eric Jochum; Rakesh Patel; ARMY RESEARCH DEVELOPMENT AND ENGINEERING COMMAND WARREN MI
|
| This paper describes modeling and simulation technologies used to simulate the electrical systems of Army vehicles using Matlab/Simulink coupled with graphical user interface software. The models were built using Mathworks' Matlab/Simulink software in conjunction with the SimPowerSystems Toolbox, a toolkit provided by Mathworks that provides models of basic electrical components such as capacitors and inductors in addition to more advanced components such as diodes and IGBT's. The current results of ... |
|
| Coordination of Large Pulsed Loads on Future Electric Ships |
MAY 2006 |
11 pages |
| Authors:
Lori N. Domaschk; Abdelhamid Ouroua; Robert E. Hebner; Oscar E. Bowlin; W. B. Colson; TEXAS UNIV AT AUSTIN CENTER FOR ELECTROMECHANICS
|
| Part of the technical versatility of future all-electric ships is the potential ability to share large amounts of power among a variety of high power loads. To help evaluate this potential and to provide information to help guide technology selection, a physics-based model of a power train for an electric ship has been developed and implemented on three modeling platforms. Using this model, three different investigations have been carried out ... |
|
| High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments |
14 APR 2006 |
|
| Authors:
Clay Wilson; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| Electromagnetic Pulse (EMP) is an instantaneous, intense energy field that can disrupt at a distance numerous electrical systems and high technology microcircuits that are especially sensitive to power surges. A large-scale EMP effect can be produced by a single nuclear explosion detonated high in the atmosphere. This method is referred to as High-Altitude EMP (HEMP). A similar, smaller scale EMP effect can be created using non-nuclear devices with powerful batteries ... |
|
| Electromagnetic Pulse Threats in 2010 |
NOV 2005 |
29 pages |
| Authors:
Colin R. Miller; AIR WAR COLL MAXWELL AFB AL CENTER FOR STRATEGY AND TECHNOLOGY
|
| Current U.S. military transformation strategy centers on information dominance, network-centric warfare, and expeditionary operations. Certainly, adversaries learned from Saddam's poor decision to face American forces head-on and will increasingly employ asymmetric attacks to defeat U.S. forces in the future. Electromagnetic pulse (EMP) weapons represent one of the most likely and potentially devastating opportunities for this type of attack in the near future. Ranging from sophisticated intercontinental nuclear weapons specifically designed ... |
|
| Shipboard Electrical Power Quality of Service |
Jul-2005 |
7 pages |
| Authors:
Norbert H Doerry; David H Clayton; NAVAL SEA SYSTEMS COMMAND WASHINGTON DC
|
| Although the U.S. Navy has decreed that the primary aim of the electric power system design will be for survivability and continuity of the electrical power supply, metrics have never been developed for continuity of service. This paper examines design issues associated with providing continuity of service under other than combat damage conditions and proposes a Quality of Service (QOS) metric to aid shipboard power systems design. This QOS metric ... |
|
| Development of Low-Cost Satellite Control Software |
JUN 2005 |
61 pages |
| Authors:
Bryan D. Waterman; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis details the development and validation procedures of the experiment control software to be used on the NPSAT1. The software developed for a standard Linux kernel instead of an expensive proprietary space computer system includes functions for satellite orbit prediction, precise satellite location, and adaptive experiment scheduling using inputs from the electrical power system, sub-satellite position, and sub-satellite local time. |
|
| Optically Interconnected Intelligent RAM Multiprocessors (OPTO-IRAM) |
OCT 2004 |
48 pages |
| Authors:
Chung-Seok Seo; Abhijit Chatterjee; GEORGIA INST OF TECH ATLANTA SCHOOL OFELECTRICAL AND COMPUTER ENGINEERING
|
| Current electrical systems are faced with the limitation in performance by the electrical interconnect technology determining overall processing speed. In addition, the electrical interconnects containing many long distance interconnects require high power to drive. One of the best methods to overcome these bottlenecks is through the use of optical interconnect to limit interconnect latency and power. This report describes development of Computer Aided Design (CAD) tools for optimizing a new ... |
|
| Hybrid Electric Drive for Small Craft |
15 AUG 2004 |
|
| Authors:
Kevin Silbert; MARITIME APPLIED PHYSICS CORP (MAPC) BALTIMORE MD
|
| The introduction of unmanned surface vessels (USVs) in the U.S. Navy is progressing rapidly. Recent awards for the Littoral Combat Ship program will accelerate the introduction of these USVs with an initial emphasis on mine warfare, anti-submarine, anti-surface, and electronic warfare missions. There is a strong desire to use mission modules that fit within a common envelope that can be accommodated in one or more offboard vehicle designs. There is ... |
|
| On the Addition of EM Field Propagation and Coupling Effects in the BLT Equation. Revision |
08-Jun-2004 |
44 pages |
| Authors:
F M Tesche; C M Butler; CLEMSON UNIV SC DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| Recent developments in electromagnetic (EM) field sources producing high power microwave (HPM) or ultra wide-band (UWB) transient signals have led to a concern about the effects of these environments on modern digital systems. Such excitations, which collectively are referred to as high power electromagnetic (HPEM) fields, could be inadvertent, like the environment produced by a search radar illuminating a nearby aircraft, or intentional, such as a deliberate attack on a ... |
|
| Operational Impacts of the Aegis Cruiser Smartship System |
MAR 2004 |
12 pages |
| Authors:
Jeff Fullerton; Marc Scotchlas; Thad Smith; Adam S. Freedner; NAVAL SEA SYSTEMS COMMAND WASHINGTON DC
|
| The Chief of Naval Operations guidance over the past few years has challenged the fleet with finding ways to increase efficiencies while maintaining overall readiness as a highly effective force. In addition, today's ships must be continuously ready and surge capable in accordance with the Fleet Response Plan. One way to meet these goals is to leverage technologies that will optimize ship manning and streamline shipboard training. The Smartship installation ... |
|
| The Application of Value Focused Thinking to Utilities Privatization Source Selection |
MAR 2004 |
156 pages |
| Authors:
J. H. Duncan; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The Department of Defense's utility systems have suffered from under- funding and lack of technology investment, thereby creating a service gap between these DoD systems and systems operated by commercial providers. In order to overcome this gap and refurbish their systems, the DoD has focused its efforts on privatization of these systems. The utilities privatization decision is extremely vital and permanent and thus warrants backup source selection methodologies. Since awarding ... |
|
| Lighting Control Systems |
26 FEB 2004 |
43 pages |
| Authors:
John T. Berry; SCHNEIDER ELECTRIC MEDIA PA
|
| Details Schneider Electric/Square D's lighting control system. Why focus on lighting control: Operational savings from the installation of an intelligent lighting control system frequently exceeds 15% of total electrical bill. |
|
| Occupational Analysis Products: Aerospace Ground Equipment- AFSC 2A6X2 (CD-ROM) |
Feb-2004 |
|
| Authors:
AIR FORCE OCCUPATIONAL MEASUREMENT SQUADRON RANDOLPH AFB TX
|
| ELECTRONIC FILE CHARACTERISTICS: 25 files; MS Word (.DOC), MS PowerPoint (.PPT), and HyperText Markup Language (.HTML). PHYSICAL DESCRIPTION: 1 computer laser optical disc (CD-ROM); 4 3/4 in.; 45.5 MB. SYSTEMS DETAIL NOTE: ABSTRACT: This is a report of an occupational survey of the Aerospace Ground Equipment (AGE) (OSSN 2532, Feb 04) career ladder, conducted by the Occupational Analysis Flight, AFOMS. The OSF reports the findings of current data that are ... |
|
| Research Study Towards a MEFFV Electric Armament System |
JAN 2004 |
205 pages |
| Authors:
J. A. Pappas; J. R. Kitzmiller; G. A. Wedeking; M. D. Werst; G. B. Frazier; TEXAS UNIV AT AUSTIN CENTER FOR ELECTROMECHANICS
|
| The U.S. Marine Corps Marine Family of Fighting Vehicles (MEFFV) program is focused on developing a fighting vehicle that is survivable and lethal on the battlefield of 2020 and beyond. One vehicle variant seeks to exploit synergies between electric mobility and electric armament systems by employing a hybrid electric mobility propulsion system and an electric gun for an all Electric MEFFV. The objective of this project was to determine the ... |
|
| The Effect of Age on the M1 Tank: Implications for Readiness, Workload, and Recapitalization |
2004 |
|
| Authors:
RAND CORP SANTA MONICA CA
|
| Many of the Army's major weapon systems were procured as part of a major investment cycle that ended in the early 1990s. They are expected to remain in use until about 2030, when the Army has fully fielded its next generation of forces. Thus, large portions of some fleets are already more than 10 years old, with little prospect for near-term replacement. The Army has grown increasingly concerned about sustaining ... |
|
| An Enhanced Graphical User Interface for Analyzing the Vulnerability of Electrical Power Systems to Terrorist Attacks |
DEC 2003 |
123 pages |
| Authors:
Dimitrios Stathakos; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis develops a Graphical User Interface (GUI) to represent electric power grids subject to interdiction (attack) by terrorists The work enhances the prototypic One-line Diagram (OD) representations of electric power networks in the VEGA 1.O decision-support system (Vulnerability of Electrical Power Grids Analysis, version 1.O) Conforming to Windows standards, the new OD GUI incorporates advanced graphical features, which help the user visualize the model and understand the consequences of ... |
|
| Occupational Survey Report. Aircraft Electrical And Environmental Systems, AFSC 2A6X6 |
OCT 2003 |
77 pages |
| Authors:
Scott Vap; Bryan Pickett; AIR FORCE OCCUPATIONAL MEASUREMENT SQUADRON RANDOLPH AFB TX
|
| This report presents the results of an Air Force Occupational Survey of the Aircraft Electrical and Environmental Systems career ladder (AFSC 2A6X6). Authority for conducting an occupational survey is contained in AFI 36-2623. Copies of this report and pertinent computer printouts are distributed to the Air Force Career Field Manager, technical training school, all major using commands, and other interested operations and training officials. |
|
| Mathematical and Computational Issues in Advanced Plasma Microthrusters |
04 SEP 2003 |
10 pages |
| Authors:
Nikolaos A. Gatsonis; WORCESTER POLYTECHNIC INST MA
|
| This mathematical and computational work investigated new issues that arise in the simulation of gas and plasma flows in microthrusters, plume flows and flows in associated devices. This research aimed overall at a unified mathematical formulation and numerical discretization of multi-species, partially ionized plasma micro-flows in nonequilibrium. The result is a seamless Particle In-Cell/Monte Carlo methodology developed on unstructured grids for flexibility and includes an adaptation feature. The methodology implemented ... |
|
| Pulse-Power: A Possible Alternative to Chemicals for Zebra Mussel Control; Summary of 2000 Field Studies |
SEP 2003 |
11 pages |
| Authors:
Gary Smythe; Andrew Miller; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Field studies Were conducted in 2000 to determine if the effects of pulse-power electric field systems could be evaluated by examining zebra mussel planktonic life stages. Evaluating plankton was a major variation from previous study methods and objectives. In the past, the older settlement stage was the target stage and a high control rate was the goal. In the 2000 studies, it was necessary only to have a consistent effect ... |
|
| Cost Performance Estimating Relationships for Hybrid Electric Vehicle Components |
31 JUL 2003 |
51 pages |
| Authors:
SCIENCE APPLICATIONS INTERNATIONAL CORPMCLEAN VA
|
| This report documents hybrid electric vehicle (HEV) component cost performance estimating relationships (CPER) developed by Science Applications International Corporation (SAIC) for the Office of the Deputy Assistant Secretary of the Army for Cost and Economics under contract DASW0l-97-D-0061 (Delivery Order 6). These CPER are tools that support cost estimation of HEV components. While this technology is still developing, recent advances make it likely that future military vehicles will contain HE ... |
|
| A Rationale for Establishing Survivability Requirements for Objective Force Unmanned Army Platforms and Systems |
JUN 2003 |
20 pages |
| Authors:
Robert A. Pfeffer; ARMY NUCLEAR AND CHEMICAL AGENCY FORT BELVOIR VA
|
| The introduction of high-tech equipment into the Army inventory has substantially increased battle effectiveness, reduced personnel requirements, and in some cases allowed the replacement of several manned operational platforms and systems with unmanned equivalents. The continued trend toward digital robotics in the battlespace has become extremely attractive to military planners, so much so that future warfighters are expected to employ a considerable number of unmanned platforms and systems. Up to ... |
|
| Reliability-Based Operational Performance Metrics for Ship Structures |
APR 2003 |
145 pages |
| Authors:
Paul E. Hess III; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| Program management is a discipline on which new systems and technologies are formed. It is very often concerned with reducing or mitigating the risks associated with cost, schedule and performance. This report introduces reliability-based performance metrics to manage structural system performance, specifically for Navy surface ships, and allows the risk associated with the platform structural performance to be mitigated as is done with other platform systems, such as electrical and ... |
|
| Reduce's Ship's Crew-By Virtual Presence (RSVP) Advanced Technology Demonstration (ATD) |
FEB 2003 |
353 pages |
| Authors:
Anthony J. Seman III; Kevin Toomey; Scott Lang; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| RSVP was a proof-of-concept and technology demonstrator, whose purpose was to provide Navy research and development risk mitigation for the DD21 program. The three year, 15 million dollar, BA 6.3 program was sponsored by the Office of Naval Research (ONR) Ship Hull, Mechanical, & Electrical Systems Science and Technology Division (Code 334) The high risk, high payoff ATD was significant to the Navy and DOD in demonstrating an intra-compartment, wireless ... |
|
| Wire Integrity Field Survey of USAF Legacy Aircraft |
FEB 2003 |
|
| Authors:
Joseph S. Kuzniar; George A. Slenski; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS MANUFACTURING DIR/SYSTEMS SUPPORT DIV
|
| Wiring is so fundamental to current aerospace equipment that we often forget it is a system unto itself The aging of a wire system can result in loss of critical functions in equipment powered by the system or in loss of critical information regarding the operation of certain parts of the equipment. Either result can lead to catastrophic equipment failure or to smoke and fire. Consequently, the safety of aerospace ... |
|
| Wiring System Diagnostic Techniques for Legacy Aircraft |
FEB 2003 |
|
| Authors:
David H. Johnson; Edward L. White; Joseph J. D'Angelo Jr.; Dwayne Dicks; Adam L. Decker; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS MANUFACTURING DIR/SYSTEMS SUPPORT DIV
|
| As aircraft continue to age, managing the overall wiring system is becoming an important issue. Over time, the accumulation of stresses from the operational environment, installation, and maintenance can induce wiring failures. In both design and maintenance, wiring is usually treated more as a commodity than a subsystem. A systematic process for managing wiring is only now just emerging. A major challenge is the development of wiring diagnostic equipment. The ... |
|
| Aircraft Accident Report: In-Flight Electrical System Failure and Loss of Control Jet Express Services Raytheon (Beechcraft) Super King Air 200, N81PF Near Strasburg, Colorado January 27, 2001 |
15 JAN 2003 |
56 pages |
| Authors:
NATIONAL TRANSPORTATION SAFETY BOARD WASHINGTON DC
|
| This report explains the accident involving a Jet Express Services Raytheon (Beechcraft) Super King Air 200 airplane, which crashed near Strasburg, Colorado. The safety issue discussed in this report is the lack of oversight for athletic team and other college- and university-sponsored travel. A safety recommendation concerning this issue is addressed to the National Collegiate Athletic Association, the National Association of Intercollegiate Athletics, and the American Council on Education. |
|
| Mechanical Systems Characterization of Boeing 747 Aging Systems Test Bed Aircraft |
DEC 2002 |
10 pages |
| Authors:
SANDIA NATIONAL LABS ALBUQUERQUE NM AIRWORTHINESS ASSURANCE NDI VALIDATION CENTER
|
| As part of the Federal Aviation Administration (FAA) Aging Aircraft Program, the FAA purchased a Boeing 747 to be used as a test bed aircraft for investigating aging mechanical and electrical systems. When retired, the airplane was decommissioned in a way to preserve the functionality of the mechanical and electrical systems. Total Aircraft Services, Inc., under contract to the FAA Airworthiness Assurance Nondestructive Validation Center located at Sandia National Laboratories, ... |
|
| Single Naval Fuel At-Sea Feasibility Study - Phase One |
25 OCT 2002 |
56 pages |
| Authors:
Robert M. Giannini; Calvin J. Martin; Richard Strucke; Richard A. Kamin; Douglas F. Mearns; NAVAL AIR SYSTEMS COMMAND PATUXENT RIVER MD
|
| The U.S. Navy has completed the first of a two-phase study to determine the feasibility of converting to JP-5, MIL-DTL-5624, NATO F-44, as the single naval fuel at-sea. This naval single battlefield fuel would be needed in all aircraft propulsion, ship propulsion, electrical power generation systems, and USMC ground force equipment. JP-5 was chosen as the single fuel because the aircraft requirements are the most stringent of all the naval ... |
|
| Roadmap to an Electric Naval Force |
JUL 2002 |
90 pages |
| Authors:
W. Weldon; P. Gale; R. Adair; M. Adamiak; C. Allen; R. Ashton; C. Brown; L. Felton; R. Rischl; J. Gully; NAVAL RESEARCH ADVISORY COMMITTEE ARLINGTON VA
|
| NRAC was tasked to assess the increasing electrification of the traditionally mechanical US Navy. Specifically, the Panel was asked to study recent trends and developments; recommend a power system architecture; and, recommend a science and technology roadmap for development of an integrated electric naval force. The Panel reviewed commercial electrical marine applications worldwide and the various naval electric propulsion, auxiliary, sensor, and weapons programs in the US and UK from ... |
|
| Stability Analysis of a Nonlinear System Stabilizing Controller for an Integrated Power System |
2002 |
92 pages |
| Authors:
Daniel F. Chiafair; NAVAL ACADEMY ANNAPOLIS MD
|
| Future electric warships will contain one integrated electrical power infrastructure for propulsion, ship's service, and weapons systems. This integrated power system (IPS) must provide continuous power to mission and the critical systems, including during major combat battle damage disruptions. This research investigated a novel nonlinear systems stabilizing control strategy and associated stability assessment tools recently proposed by Sudhoff. Using a MATLAB-based DC stability toolbox, nonlinear stability augmentation of a prototype ... |
|
| Direct Write Laser Lithography System |
2002 |
7 pages |
| Authors:
Axel Scherer; CALIFORNIA INST OF TECH PASADENA
|
| The Heidelberg Instruments laser writer was purchased in July 2002, arrived in November 2002, and was fully operational after several months of optimization and hardware troubleshooting in April 2003. At present, this instrument is used for optical beam-writing of UV lithography masks, and will be employed in tandem with a recently purchased MA6/BA6 mask aligner for rapid prototyping in nanobiotechnology and nanophotonics research at Caltech. It is presently also used ... |
|
| 42 Volt Electrical Power System for Military Vehicles -- Comparison With Commercial Automotive Systems |
2002 |
6 pages |
| Authors:
M. A. Masrur; V. K. Garg; John Monroe; Rakesh Patel; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| The evolution of automotive electrical system architecture in commercial and military applications is discussed in this paper. The present voltage levels of 14 volt in commercial and generally 28 volt in military vehicles are unable to sustain the growing demands of electrical loads, created largely due to the advent of power electronics. In this paper the issue of transitioning to 42 volt system is discussed. Presently 42 volt system is ... |
|
| Naval Surface Warfare Center Carderock Division, Technical Digest |
DEC 2001 |
234 pages |
| Authors:
NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| This purpose of this digest is to discuss and provide information on research, development, test and evaluation, fleet support and in-service engineering for surface and undersea vehicle hull, mechanical and electrical systems, and propulsions; and also to provide research and development and to provide support to the Maritime Administration. |
|
| Impedance Measurements as a Tool for the Detection of Endocrine Disrupting Chemicals |
25 OCT 2001 |
|
| Authors:
V. Sacks; J. Rishpon; TEL-AVIV UNIV (ISRAEL) DPT OF MOLECULAR MICROBIOLOGY AND BIOTECHNOLOGY
|
| The growing awareness worldwide over the deleterions effects of endocrine disruptors on human health has created a need for screening systems to detect xenoestrogens, a diverse group of chemicals that mimic estrogenic actions and are assumed to decrease mail fertility and induce hormone related cancers in females, Here we describe a novel, class- selective detector that uses fast impedance measurements to monitor the binding of estrogen and xenoestrogens to a ... |
|
| EGG Measurement Under Various Situations |
25 OCT 2001 |
|
| Authors:
Masatomo Inoue; Shingo Iwamura; Masaki Yoshida; OSAKA ELECTRO-COMMUNICATION UNIV NEYAGAWA (JAPAN) GRADUATE SCHOOL OF ENGINEERING
|
| As a result of the experiment directly guided from a gastric membrane side or gastric tunica serosa ventriculi side, electric activity of the stomach is generated at 3 cycle per minutes (3cpm) from the pacemaker near the greater curvature of stomach side in the stomach upper part 1/3, and being spread to a pylorus side is confirmed, This is called of Electrical Control Activity (ECA) or slow wave, However, in ... |
|
| Fast Acquisition of Otoacoustic Emissions by Means of Principal Component Analysis |
25 OCT 2001 |
|
| Authors:
P. Ravazzani; G. Tognola; M. Parazzini; F. Grandori; POLITECNICO DI MILANO (ITALY) BIOMEDICAL ENGINEERING
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| Transient-Evoked Otoacoustic Emissions (TEOAE) are nonstationary acoustic signals coming from the inner ear after acoustic stimulation by clicks and they are applied as tools in newborn hearing screening programs to allow the early identification of hearing loss and the consequent diagnosis and intervention. In any screening program, the duration of each test is a crucial parameter. For TEOAE, it is strongly influenced by the acquisition procedure, typically based on classical ... |
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| Enhanced Modiolar Stimulation Effects in the Inferior Colliculus |
25 OCT 2001 |
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| Authors:
Brian J. Lithgow; MONASH UNIV VICTORIA (AUSTRALIA) DEPT OF ELECTRICAL AND COMPUTER SYSTEMS ENGINEERING
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| This preliminary study quantifies and provides one explanation for the extent of modiolar stimulation observed as a function of current level as recorded in a population of Inferior Colliculus units. The Inferior Colliculus units were driven by scala tympani bipolar charge balanced stimulation. |
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