scholarly journals 1/20 scale model pump test program: facility description report. Key phase report, March 1977. [BWR; PWR]

1977 ◽  
Author(s):  
P. W. Runstadler, Jr.
Keyword(s):  
Scale Model ◽  
Test Program ◽  
Pump Test

Overview of the Ares I scale model test program

2011 ◽  
Vol 130 (4) ◽  
pp. 2542-2542
Author(s):  
Douglas D. Counter ◽  
Janice Houstion
Keyword(s):  
Model Test ◽  
Scale Model ◽  
Test Program ◽  
Ares I

STOVL Hot Gas Ingestion Control Technology

1989 ◽  
Author(s):  
K. C. Amuedo ◽  
B. R. Williams ◽  
J. D. Flood ◽  
A. L. Johns
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Scale Model ◽  
Nasa Lewis Research ◽  
Control Technology ◽  
Test Program ◽  
Hot Gas ◽  
Vertical Landing ◽  
Low Speed Wind Tunnel ◽  
Face Temperature

A comprehensive wind tunnel test program was conducted to evaluate control of Hot Gas Ingestion (HGI) on a 9.2% scale model of the McDonnell Aircraft Company model 279-3C advanced Short Takeoff and Vertical Landing (STOVL) configuration. The test was conducted in the NASA-Lewis Research Center 9 foot by 15 foot Low Speed Wind Tunnel during the summer of 1987. Initial tests defined baseline HGI levels as determined by engine face temperature rise and temperature distortion. Subsequent testing was conducted to parametrically evaluate HGI control using: Lift Improvement Devices (LIDs), forward nozzle splay angle, combination of LIDs and forward nozzle splay angle, and main inlet blocking. The results from this test program demonstrate that HGI can be effectively controlled and that HGI is not a barrier to STOVL aircraft development.

Reactor Coolant Pump Flywheel Overspeed Evaluation

1974 ◽  
Vol 96 (4) ◽  
pp. 279-285 ◽  
Author(s):  
P. C. Riccardella ◽  
W. H. Bamford
Keyword(s):  
Fracture Mechanics ◽  
Ductile Failure ◽  
Light Water Reactor ◽  
Scale Model ◽  
Intensity Factors ◽  
Test Program ◽  
Primary Coolant ◽  
Coolant Pump ◽  
Reactor Primary Coolant ◽  
Experimental Effort

The overspeed capability of the large steel flywheels used on light water reactor primary coolant pumps has been evaluated through a combined analytical and experimental effort. Limiting speeds of the prototype flywheel design were calculated for the ductile failure mode using the principles of Section III of the ASME Boiler and Pressure Vessel Code, and for the brittle fracture mode using a fracture mechanics approach in which stress intensity factors were determined from finite element computer analysis. The accuracy of the analytical approach was verified by a scale model test program which demonstrates excellent agreement between experiment and analysis. The results of the evaluation are presented in this paper, and they illustrate the kinds of things which can be accomplished through application of modern fracture mechanics technology, including plasticity considerations, to the solution of hardware problems of real engineering interest.

Scale-model testing of reinforced concrete under impact loading conditions

1989 ◽  
Vol 16 (4) ◽  
pp. 459-466 ◽  
Author(s):  
J. A. Sato ◽  
F. J. Vecchio ◽  
H. M. Andre
Keyword(s):  
Reinforced Concrete ◽  
Key Words ◽  
Impact Loading ◽  
Impact Load ◽  
Scaling Theory ◽  
Scale Model ◽  
Reinforced Concrete Structures ◽  
Impact Loads ◽  
Test Program ◽  
Load Conditions

Aspects of scaling theory relating to the response of reinforced concrete structures under impact load conditions are reviewed. Details for modelling concrete and reinforcement, to be consistent with similitude requirements, are also discussed. A test program is described in which models of varying size were constructed, drop tested, and compared with prototype response. An analysis of the test data is made, indicating that, within certain limitations, the predictions of scaling theory are applicable to reinforced concrete subjected to extreme impact loads. Key words: cracking, impact, loads, modelling, reinforced concrete, scaling, stresses, structures, tests.

Model Test of an Ice Class Bulk Carrier With the Thyssen/Waas Bow Form

1986 ◽  
Vol 108 (2) ◽  
pp. 168-172 ◽  
Author(s):  
A. Freitas ◽  
R. S. Nishizaki
Keyword(s):  
Northwest Territories ◽  
Model Test ◽  
Canadian Arctic ◽  
Scale Model ◽  
Test Results ◽  
Bulk Carrier ◽  
Test Program ◽  
Conventional Form ◽  
Ship Model ◽  
Transportation Development

Alternative bow forms have been investigated for the “M. V. Arctic” in a test program sponsored by the German Ministry for Research and Technology and the Transportation Development Centre of Transport Canada. The “M. V. Arctic” is a Canadian Arctic Class 2 bulk carrier of 28000 dwt which operates between the Northwest Territories and Europe during the summer and fall months. The tests were conducted at the Hamburg Ship Model Basin using a 1/30th scale model fitted with three different forebody forms. These included the Thyssen/Waas design, a new design by Melville Shipping Ltd., Calgary, and the existing bow form. The tests were performed in ice, still water and irregular seaway. The Thyssen/Waas icebreaker system includes a novel bow form and employs an unconventional icebreaking technique. The system has been successfully tested in model and demonstrated in full scale with the modified icebreaker “Max Waldeck”. The Melville design uses a conventional form incorporating the latest technology. This paper describes the model tests and discusses the relative performance as indicated by the test results. The investigation has shown the potential for the use of the Thyssen/Waas bow form on icebreaking cargoships such as the “M.V. Arctic”.

Tests of a mockup of a transformable module for space and planetary stations

2020 ◽  
pp. 60-70
Author(s):  
Igor I. KHAMITS ◽  
Sergey S. POZDNYAKOV ◽  
Ilya M. FILIPPOV ◽  
Leonid S. BURYLOV ◽  
Igor V. PLETNEV ◽  
...  
Keyword(s):  
Frequency Response ◽  
Key Words ◽  
Investment Project ◽  
Scale Model ◽  
Project Development ◽  
Test Program ◽  
Experimental Development ◽  
Space Module ◽  
Amplitude Frequency Response ◽  
Experimental Facilities

During the period of 2012 through 2015, RSC Energia, on its own initiative, within the framework of investment project Development of a Prototype Transformable Habitable Space Module, conducted an independent effort to design transformable modules, as well as to construct and perform ground developmental testing of a scale model of a transformable module. The test program was intended to verify and confirm the chosen design and layout solutions with respect to functioning, pressure integrity, strength of the product, as well as to acquire data about amplitude frequency response of the transformable shell. The paper presents descriptions of the tests that have been conducted, their objectives and achieved results, it describes experimental facilities and procedures for the tests. It draws conclusions based on the results produced by the effort, and outlines ways and options for further developmental testing on the mockup of the transformable module. Key words: transformable module, multilayer transformable pressurized shell, experimental development, testing.

STOVL Hot Gas Ingestion Control Technology

1991 ◽  
Vol 113 (1) ◽  
pp. 68-74 ◽  
Author(s):  
K. C. Amuedo ◽  
B. R. Williams ◽  
J. D. Flood ◽  
A. L. Johns
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Scale Model ◽  
Nasa Lewis Research ◽  
Control Technology ◽  
Test Program ◽  
Hot Gas ◽  
Vertical Landing ◽  
Low Speed Wind Tunnel ◽  
Face Temperature

A comprehensive wind tunnel test program was conducted to evaluate control of Hot Gas Ingestion (HGI) on a 9.2 percent scale model of the McDonnell Aircraft Company model 279-3C advanced Short Takeoff and Vertical Landing (STOVL) configuration. The test was conducted in the NASA-Lewis Research Center 9 ft by 15 ft Low Speed Wind Tunnel during the summer of 1987. Initial tests defined baseline HGI levels as determined by engine face temperature rise and temperature distortion. Subsequent testing was conducted to evaluate HGI control parametrically using Lift Improvement Devices (LIDs), forward nozzle splay angle, a combination of LIDs and forward nozzle splay angle, and main inlet blocking. The results from this test program demonstrate that HGI can be effectively controlled and that HGI is not a barrier to STOVL aircraft development.

scholarly journals Assessment of Reinforced Concrete Corroded Column By Non-Destructive Test

2019 ◽  
Vol 9 (1S) ◽  
pp. 380-383
Keyword(s):  
Reinforced Concrete ◽  
Open Circuit Potential ◽  
Steel Corrosion ◽  
Concrete Columns ◽  
Open Circuit ◽  
Scale Model ◽  
Reinforcement Corrosion ◽  
Test Program ◽  
Non Destructive

Corrosion of rebar is one of the most important factors that affect the durability of reinforced concrete structures. Low water cement ratio, quality of concrete and adequate cover to reinforcement are the main three important factors which can prevent the problem of corrosion. However this factors are insufficient in Splash Zones. Many structures are built as per the codal provisions have suffered rebar corrosion. Effective measures are most important to increase the durability of the structures and to overcome the problem of reinforcement corrosion. This paper discuss and analyzes the NDT results reported from a detailed test program designed to examine the axial behaviour of reinforced concrete columns subjected to steel corrosion. A total of thirty six scale model circular columns were tested. The primary variables of this investigation were the cover to diameter ratio, different degrees of steel corrosion. Corrosion process was accelerated by applying a direct current to the specimens. The measurement of electrochemical parameter was carried out using Open Circuit Potential (OCP) measurement

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