699 resultater (0,27445 sekunder)

Vis alle filtre

Mærke

Butik

Pris (EUR)

Nulstil filter

Produkter
Fra
Butikker

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

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

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

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
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

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

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

Human Factors Process Task Analysis - Liquid Oxygen Pump Acceptance Test Procedure at the Advanced Technology Development Center - Kimberly a Diorio

Human Factors Process Task Analysis - Liquid Oxygen Pump Acceptance Test Procedure at the Advanced Technology Development Center - Kimberly a Diorio

This viewgraph presentation provides information on Human Factors Process Failure Modes and Effects Analysis (HF PFMEA). HF PFMEA includes the following 10 steps: Describe mission; Define System; Identify human-machine; List human actions; Identify potential errors; Identify factors that effect error; Determine likelihood of error; Determine potential effects of errors; Evaluate risk; Generate solutions (manage error). The presentation also describes how this analysis was applied to a liquid oxygen..

DKK 130.95
1

Temperature Dependent Modal Test/Analysis Correlation of X-34 Fastrac Composite Rocket Nozzle - Andrew M Brown

Temperature Dependent Modal Test/Analysis Correlation of X-34 Fastrac Composite Rocket Nozzle - Andrew M Brown

A unique high temperature modal test and model correlation/update program has been performed on the composite nozzle of the FASTRAC engine for the NASA X-34 Reusable Launch Vehicle. The program was required to provide an accurate high temperature model of the nozzle for incorporation into the engine system structural dynamics model for loads calculation; this model is significantly different from the ambient case due to the large decrease in composite stiffness properties due to heating. The high-temperature..

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 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

Energy Sector Market Analysis

Energy Sector Market Analysis

This paper presents the results of energy market analysis sponsored by the Department of Energy's (DOE) Weatherization and International Program (WIP) within the Office of Energy Efficiency and Renewable Energy (EERE). The analysis was conducted by a team of DOE laboratory experts from the National Renewable Energy Laboratory (NREL), Oak Ridge National Laboratory (ORNL), and Pacific Northwest National Laboratory (PNNL), with additional input from Lawrence Berkeley National Laboratory (LBNL). The..

DKK 178.95
1

Annual Water Sampling and Analysis, Calendar Year 2000 - Rulison Test Site Area, Rio Blanco Test Site Area, Faultless Test Site Area, Shoal Test Site

Annual Water Sampling and Analysis, Calendar Year 2000 - Rulison Test Site Area, Rio Blanco Test Site Area, Faultless Test Site Area, Shoal Test Site

The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics..

DKK 159.95
1

Street Gangs and Interventions - Innovative Problem Solving with Network Analysis

Street Gangs and Interventions - Innovative Problem Solving with Network Analysis

This paper briefly reviews the range of prevention, intervention, suppression, and comprehensive strategies, providing examples of each type. It then offers a case study of problem analysis in Newark, New Jersey. The reader will learn the unique utility of network analysis in the resultant problem analysis and understand the important role of an academic research partner. Finally, the paper considers the importance of sustainability with regard to problem analysis.

DKK 130.95
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

Aeroacoustic Analysis of Fan Noise Reduction with Increased Bypass Nozzle Area - Richard P Woodward

Aeroacoustic Analysis of Fan Noise Reduction with Increased Bypass Nozzle Area - Richard P Woodward

An advanced model turbofan was tested in the NASA Glenn 9-by 15-Foot Low Speed Wind Tunnel (9x15 LSWT) to explore far field acoustic effects of increased bypass nozzle area. This fan stage test was part of the NASA Glenn Fan Broadband Source Diagnostic Test, second entry (SDT2) which acquired aeroacoustic results over a range of test conditions. The baseline nozzle was sized to produce maximum stage performance at cruise condition. However, the wind tunnel testing is conducted near sea level condition...

DKK 130.95
1