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Vibration and Acoustic Test Facility (Vatf) - User Test Planning Guide

Vibration and Acoustic Test Facility (Vatf) - User Test Planning Guide

Test process, milestones and inputs are unknowns to first-time users of the VATF. The User Test Planning Guide aids in establishing expectations for both NASA and non-NASA facility customers. The potential audience for this guide includes both internal and commercial spaceflight hardware/software developers. It is intended to assist their test engineering personnel in test planning and execution. Material covered includes a roadmap of the test process, roles and responsibilities of facility and user,..

DKK 181.95
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Antenna Test Facility (Atf) - User Test Planning Guide - Greg Lin

Antenna Test Facility (Atf) - User Test Planning Guide - Greg Lin

Test process, milestones and inputs are unknowns to first-time users of the ATF. The User Test Planning Guide aids in establishing expectations for both NASA and non-NASA facility customers. The potential audience for this guide includes both internal and commercial spaceflight hardware/software developers. It is intended to assist their test engineering personnel in test planning and execution. Material covered includes a roadmap of the test process, roles and responsibilities of facility and user,..

DKK 159.95
1

Propulsion Test Handbook - Msfc and Ssc

Propulsion Test Handbook - Msfc and Ssc

This Handbook was prepared to provide Propulsion Test Personnel a central source of fundamental reference material. The Testing Process, which is a three-part process of pre-test activities, testing, and post-test activities, involves a collaborative effort from the mechanical, electrical, safety, and environmental disciplines in the test environment. Pre-test activities, testing, and post-test activities processes will vary, per test requirements; however, the content of this Handbook should cover..

DKK 352.95
1

Flow-Field Survey in the Test Region of the Sr-71 Aircraft Test Bed Configuration - Masashi Mizukami

Flow-Field Survey in the Test Region of the Sr-71 Aircraft Test Bed Configuration - Masashi Mizukami

A flat plate and faired pod have been mounted on a NASA SR-71A aircraft for use as a supersonic flight experiment test bed. A test article can be placed on the flat plate; the pod can contain supporting systems. A series of test flights has been conducted to validate this test bed configuration. Flight speeds to a maximum of Mach 3.0 have been attained. Steady-state sideslip maneuvers to a maximum of 2 deg have been conducted, and the flow field in the test region has been surveyed. Two total-pressure..

DKK 166.95
1

Test and Evaluation - Projects Funded by Dod's Central Test and Evaluation Investment Program: Nsiad-91-111

Test and Evaluation - Projects Funded by Dod's Central Test and Evaluation Investment Program: Nsiad-91-111

Pursuant to a congressional request, GAO reviewed projects funded by the Department of Defense's (DOD) Central Test and Evaluation Investment Program (CTEIP), focusing on: (1) project justification; (2) duplication among projects; (3) the execution of fiscal year (FY) 1990 and FY 1991 projects; and (4) project outyear funding profiles. GAO found that: (1) the CTEIP goal was to fund high-priority test and evaluation requirements and ensure adequate and timely test capabilities to support DOD weapon..

DKK 121.95
1

Power Performance Test Report for the Southwest Windpower Air-X Wind Turbine

Power Performance Test Report for the Southwest Windpower Air-X Wind Turbine

In the period from 14 October 2002 to 16 January 2003, an early production version of Southwest Windpower's AIR-X turbine was installed at the NWTC test site for acoustic noise testing. In addition to the signals required for the noise testing, additional instrumentation that allowed power performance testing in accordance with IEC 61400-12 [1] was added. The results of that test are described in this report. Please note that this test and the test report are not an accredited power performance test/test..

DKK 149.95
1

The Testing Behind the Test Facility - The Acoustic Design of the NASA Glenn Research Center's World-Class Reverberant Acoustic Test Facility - Aron D

The Testing Behind the Test Facility - The Acoustic Design of the NASA Glenn Research Center's World-Class Reverberant Acoustic Test Facility - Aron D

The National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC) is leading the design and build of the new world-class vibroacoustic test capabilities at the NASA GRC's Plum Brook Station in Sandusky, Ohio, USA. Benham Companies, LLC is currently constructing modal, base-shake sine and reverberant acoustic test facilities to support the future testing needs of NASA's space exploration program. The large Reverberant Acoustic Test Facility (RATF) will be approximately 101,000 cu..

DKK 158.95
1

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVA

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVA

This report describes the Building Energy Simulation Test for Heating, Ventilating, and Air-Conditioning Equipment Models (HVAC BESTEST) project conducted by the Tool Evaluation and Improvement International Energy Agency (IEA) Experts Group. The group was composed of experts from the Solar Heating and Cooling (SHC) Programme, Task 22, Subtask A. The current test cases, E100-E200, represent the beginning of work on mechanical equipment test cases; additional cases that would expand the current test..

DKK 279.95
1

Ares I Scale Model Acoustic Test Instrumentation for Acoustic and Pressure Measurements - Magda B Vargas

Ares I Scale Model Acoustic Test Instrumentation for Acoustic and Pressure Measurements - Magda B Vargas

Ares I Scale Model Acoustic Test (ASMAT) is a 5% scale model test of the Ares I vehicle, launch pad and support structures conducted at MSFC to verify acoustic and ignition environments and evaluate water suppression systems Test design considerations 5% measurements must be scaled to full scale requiring high frequency measurements Users had different frequencies of interest Acoustics: 200 - 2,000 Hz full scale equals 4,000 - 40,000 Hz model scale Ignition Transient: 0 - 100 Hz full scale equals..

DKK 158.95
1

Spirometry Quality Assurance - Common Errors and Their Impact on Test Results

Spirometry Quality Assurance - Common Errors and Their Impact on Test Results

Spirometry is the most common pulmonary function test (PFT) and it plays a central role in occupational respiratory disease surveillance programs. Accurate spirometry testing, interpretation, and follow-up are critical to effective screening and surveillance of workers exposed to respiratory hazards and to the management of patients in the clinical setting. Spirometry quality assurance includes examination of test values and evaluation of both the volume-time and flow-volume curves for evidence of..

DKK 159.95
1

Nonlinear Whirl Response of a High-Speed Seal Test Rotor with Marginal and Extended Squeeze-Film Dampers

Nonlinear Whirl Response of a High-Speed Seal Test Rotor with Marginal and Extended Squeeze-Film Dampers

Synchronous and nonsynchronous whirl response analysis of a double overhung, high-speed seal test rotor with ball bearings supported in 5.84- and 12.7-mm-long, un-centered squeeze-film oil dampers is presented. Test performance with the original damper of length 5.84 mm was marginal, with nonsynchronous whirling at the overhung seal test disk and high amplitude synchronous response above 32,000 rpm near the drive spline section occurring. A system critical speed analysis of the drive system and the..

DKK 149.95
1

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVA

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVA

This report documents an additional set of mechanical system test cases that are planned for inclusion in ANSI/ASHRAE STANDARD 140. The cases test a program's modeling capabilities on the working-fluid side of the coil, but in an hourly dynamic context over an expanded range of performance conditions. These cases help to scale the significance of disagreements that are less obvious in the steady-state cases. The report is Vol. 2 of HVAC BESTEST Volume 1. Volume 1 was limited to steady-state test..

DKK 319.95
1

Pre-Test Analysis Predictions for the Shell Buckling Knockdown Factor Checkout Tests - Ta01 and Ta02

Pre-Test Analysis Predictions for the Shell Buckling Knockdown Factor Checkout Tests - Ta01 and Ta02

This report summarizes the pre-test analysis predictions for the SBKF-P2-CYL-TA01 and SBKF-P2-CYL-TA02 shell buckling tests conducted at the Marshall Space Flight Center (MSFC) in support of the Shell Buckling Knockdown Factor (SBKF) Project, NASA Engineering and Safety Center (NESC) Assessment. The test article (TA) is an 8-foot-diameter aluminum-lithium (Al-Li) orthogrid cylindrical shell with similar design features as that of the proposed Ares-I and Ares-V barrel structures. In support of the..

DKK 169.95
1

Missile Defense - Review of Allegations about an Early National Missile Defense Flight Test: Gao-02-125

Missile Defense - Review of Allegations about an Early National Missile Defense Flight Test: Gao-02-125

The Department of Defense (DOD) awarded contracts to three companies in 1990 to develop and test exoatmospheric kill vehicles. One of the contractors--Boeing North American--subcontracted with TRW to develop software for the kill vehicle. In 1998, Boeing became the Lead System Integrator for the National Missile Defense Program and chose Raytheon as the primary kill vehicle developer. Boeing and TRW reported that the June 1997 flight test achieved its primary objectives but detected some sensor abnormalities...

DKK 178.95
1

Test and Evaluation - Dod Has Been Slow in Improving Testing of Software-Intensive Systems: Nsiad-93-198

Test and Evaluation - Dod Has Been Slow in Improving Testing of Software-Intensive Systems: Nsiad-93-198

GAO reviewed the Department of Defense's (DOD) efforts to improve its software acquisition processes and test and evaluation of software-intensive systems, focusing on: (1) how software-related problems affect defense acquisition programs during operational test and evaluation (OT&E); and (2) barriers that limit OT&E effectiveness. GAO found that: (1) DOD software-intensive systems often fail to meet their performance expectations, experience cost overruns and schedule delays, and are not ready for..

DKK 179.95
1

Laboratory Test Report for Six Energy Star Dehumidifiers

Laboratory Test Report for Six Energy Star Dehumidifiers

his report documents the measured performance of six residential ENERGY STAR vapor compression dehumidifiers. The performance of each was measured over a wide range of inlet air conditions and fit to a numerical model for capacity and efficiency. Performance curves were developed for use in EnergyPlus. Test data from all six dehumidifiers were also fit to generic performance curves. This work can be used by energy modelers and equipment manufacturers to understand how current products will operate..

DKK 131.95
1

Capacitor Test, Evaluation. and Modeling Within NASA Electronic Parts and Packaging (Nepp) Program. Why Ceramic Capacitors Fracture During Manual Sold

Capacitor Test, Evaluation. and Modeling Within NASA Electronic Parts and Packaging (Nepp) Program. Why Ceramic Capacitors Fracture During Manual Sold

Presentation discusses: (1) Why Multi-Layer Ceramic Capacitors(MLCCs) crack during manual soldering? Workmanship and parts issues. (2) Do existing qualification requirements assure crack-free soldering? MIL-spec Thermal Shock (TS) testing. MIL-spec Resistance to Soldering Heat (RSH) test. (3) What test can assure reliable soldering? Mechanical characteristics of ceramics. Comparison of three TS techniques: LND, TSD, and IWT. (4) Simulation of TS conditions.

DKK 149.95
1

Direct-To-Consumer Genetic Tests - Misleading Test Results Are Further Complicated by Deceptive Marketing and Other Questionable Practices: Gao-10-847

Direct-To-Consumer Genetic Tests - Misleading Test Results Are Further Complicated by Deceptive Marketing and Other Questionable Practices: Gao-10-847

In 2006, GAO investigated companies selling direct-to-consumer (DTC) genetic tests and testified that these companies made medically unproven disease predictions. Although new companies have since been touted as being more reputable--Time named one company's test 2008's \invention of the year\--experts remain concerned that the test results mislead consumers. GAO was asked to investigate DTC genetic tests currently on the market and the advertising methods used to sell these tests. GAO purchased..

DKK 159.95
1

Liquid Oxygen Propellant Densification Production and Performance Test Results with a Large-Scale Flight-Weight Propellant Tank for the X33 Rlv

Liquid Oxygen Propellant Densification Production and Performance Test Results with a Large-Scale Flight-Weight Propellant Tank for the X33 Rlv

This paper describes in-detail a test program that was initiated at the Glenn Research Center (GRC) involving the cryogenic densification of liquid oxygen (LO2). A large scale LO2 propellant densification system rated for 200 gpm and sized for the X-33 LO2 propellant tank, was designed, fabricated and tested at the GRC. Multiple objectives of the test program included validation of LO2 production unit hardware and characterization of densifier performance at design and transient conditions. First,..

DKK 224.95
1

Finance and Economics Discussion Series - Market Discipline in Banking Reconsidered: The Roles of Funding Manager Decisions and Deposit Insurance Refo

Finance and Economics Discussion Series - Market Discipline in Banking Reconsidered: The Roles of Funding Manager Decisions and Deposit Insurance Refo

We find that the risk-sensitivity of bank holding company subordinated debt spreads at issuance increased with regulatory reforms that were designed to reduce conjectural government guarantees, but declined somewhat with subsequent reforms that were aimed in part at reducing regulatory forbearance. In addition, we test and find evidence for a straightforward form of \market discipline: \ The extent to which bond issuance penalizes relatively risky banks. Evidence for such discipline only appears..

DKK 131.95
1

Grainex Mar-M 247 Turbine Disk Life Study for NASA's High Temperature High Speed Turbine Seal Test Facility - Irebert R Delgado

Grainex Mar-M 247 Turbine Disk Life Study for NASA's High Temperature High Speed Turbine Seal Test Facility - Irebert R Delgado

An experimental and analytical fatigue life study was performed on the Grainex Mar-M 247 disk used in NASA s Turbine Seal Test Facility. To preclude fatigue cracks from growing to critical size in the NASA disk bolt holes due to cyclic loading at severe test conditions, a retirement-for-cause methodology was adopted to detect and monitor cracks within the bolt holes using eddy-current inspection. For the NASA disk material that was tested, the fatigue strain-life to crack initiation at a total strain..

DKK 202.95
1

Ed465 243 - Test and Measurement Expert Opinions - A Dialogue about Testing Students with Disabilities Out of Level in Large-Scale Assessments. Out-Of

Ed465 243 - Test and Measurement Expert Opinions - A Dialogue about Testing Students with Disabilities Out of Level in Large-Scale Assessments. Out-Of

Two focus groups of test and measurement experts were held to explore the use of out-of-level testing for students with disabilities. The participants (n=17) included state and federal level assessment personnel, test company employees, and university professors. A content analysis of the narrative results indicated that there was no clear consensus in supporting or not supporting out-of-level testing. Instead, focus group participants were able to adopt numerous perspectives on many contentious..

DKK 234.00
1

NATO in Afghanistan - A Test of the Transatlantic Alliance - Paul Gallis

NATO in Afghanistan - A Test of the Transatlantic Alliance - Paul Gallis

The mission of the North Atlantic Treaty Organization (NATO) in Afghanistan is seen as a test of the alliance's political will and military capabilities. The allies are seeking to create a \new\ NATO, able to go beyond the European theater and combat new threats such as terrorism and the proliferation of weapons of mass destruction. Afghanistan is NATO's first \out-of-area\ mission beyond Europe. The purpose of the mission is the stabilization and reconstruction of Afghanistan. The mission is..

DKK 234.00
1