omniomni/omni-engineering huggingface dataset:
Flexible impeller. A flexible impeller pump is a positive-displacement pump that, by deforming impeller vanes, draws the liquid into the pump housing and moves it to the discharge port with a constant flow rate.  The flexibility of the vanes enables a tight seal to the internal housing, making the pump self-priming, while also permitting bi-directional operation.  The output from these pumps tends to be smooth or gentle when compared to the operation of a reciprocating pump (for example). In 1938, Arthur M. Briggs filed a patent for this type of pump.

Types
 Execution: close coupled, bare shaft, with hydraulic motor, belt driven, gearmotor, mechanical speed variator, frequency converter,...  
 Fittings: DIN 11851, Garolla, BSP, Macon, Triclover, SMS, BSM/RJT,...

Uses
Particularly suitable for transfer of viscous, delicate, and slurry fluids even with high solid content. Widely used in the oenological field, food processing, chemical industry, cosmetic and marine field.

Materials  
Pump housing can be made of high grade stainless steel, bronze for marine applications, or other materials.

The impeller can be made of:

 Natural rubber (NR) - Excellent for water based liquid, highest mechanical resistance. 
 Neoprene (CR) - Good balance between chemical and mechanical resistance. 
 Nitrile (NBR) - Excellent resistance to oils and fats. 
 EPDM - Best for hot fluid, for acid and alkaline fluids. 
 Silicone (VMQ) - Best for very high temperature.

The end face mechanical seal can be made of:

 Ceramic
 Stainless steel
 Graphite
 Tungsten carbide
 Silicon carbide
 Elastomers, such as NBR, EPDM, or VITON

References

Pumps
Chandrapur Super Thermal Power Station. Chandrapur Super Thermal Power Station (often abbreviated as CSTPS) is a thermal power plant located in Chandrapur district in the Indian state of Maharashtra. The power plant is one of the coal based power plants of MAHAGENCO. The coal for the power plant is sourced from Durgapur and Padmapur Collieries of Western Coalfields Limited. The plant was officially inaugurated by the Prime Minister Indira Gandhi on 8 October 1984.

With the total capacity of 3340MW, the plant is the largest power plant in the Maharashtra. It accounts for more than 25% of Maharashtra's total needs. The plant gets water supply from Erai Dam when in normal conditions. In the summer of 2010 due to less water in Erai, the plant also got water supply from Chargaon Dam.

Capacity

Gallery

See also

 Make in Maharashtra

References

Coal-fired power stations in Maharashtra
Chandrapur district
Energy infrastructure completed in 1983
1983 establishments in Maharashtra
20th-century architecture in India
Sabakzai Dam. Sabakzai Dam is an embankment dam on the Sawar Rud, a tributary of Zhob River, about 68 km southwest of Zhob in Balochistan, Pakistan.

The 395 m long dam is earth and rock-fill with a command area of 7300 acres. Construction began in 2004 and it was inaugurated by President Pervez Musharraf on 3 September 2007. The irrigation works are still being constructed.

See also 

 List of dams and reservoirs in Pakistan

References

Dams in Balochistan, Pakistan
Embankment dams
Dams completed in 2007
Terrence L. Fine. Terrence L. Fine (March 9, 1939  January 31, 2021) was an American scientist, engineer and philosopher. He is known especially for his contributions to the defense and development of alternatives to the classical calculus for probabilistic modeling and decision-making. Other contributions include Fine's theorem, the Fine numbers and the Fine–McMillan quantizer. He was the recipient of the first patent awarded in the area of statistical delta modulation.

Biography 
Fine was born in New York City on March 9, 1939. His academic degrees were from the City College of New York (B.E.E.) and from Harvard University (S.M., Ph.D.). He was awarded a Miller Research Fellowship at the University of California Berkeley for the period 1964 to 1966, after which he joined the faculty of Cornell University in Ithaca, New York, where he remained until his retirement in 2010. There he served as Professor in the Department of Electrical and Computer Engineering; concurrently, as Professor in the Department of Statistical Sciences; and from 1999 to 2004, as Director of the university's multidisciplinary Center for Applied Mathematics. He was a Professor Emeritus at Cornell. He was a Life Fellow and Third Millennium Medalist of the IEEE (Institute of Electrical and Electronics Engineers).

Selected publications 
 Theories of Probability: An Examination of Foundations, Academic Press, 1973. A study of mathematical and interpretive alternatives to the standard framework for mathematical probability.
 Feedforward Neural Network Methodology, Series on Statistics for Engineering and Information Science, Springer-Verlag, 1999.
 Probability and Probabilistic Reasoning for Electrical Engineering, Pearson/Prentice-Hall, 2006.
  "An argument for comparative probability", in R. Butts, J. Hintikka, eds., Basic Problems in Methodology and Linguistics III, Univ. Western Ontario Ser. Philosophy of Science, 11, D. Reidel, Dordrecht, 105–119, 1977.
 "On the apparent convergence of relative frequency and its implications", IEEE Transactions on Information Theory, IT-16, 251–257, 1970. Source of Fine's Theorem.
 "Extrapolation when very little is known about the source", Information and Control, 16, 331–359, 1970. A non-statistical approach to extrapolation, and source of the Fine numbers.

References 

20th-century American mathematicians
21st-century American mathematicians
Philosophers of probability
Harvard John A. Paulson School of Engineering and Applied Sciences alumni
City College of New York alumni
1939 births
2021 deaths
Mathematicians from New York (state)
G&SWR 52 Class. The Glasgow and South Western Railway (GSWR) 52 class was a class of six 0-4-0 steam goods locomotives designed in 1864, by Patrick Stirling. The design was later continued by a similar design by his brother  James Stirling.

Development 
The six examples of this class were designed by Patrick Stirling for the GSWR and were built by Kilmarnock Locomotive Works between 1864 and 1866, to replace earlier 0-4-0 goods locomotives inherited by the railway. They were numbered 52-57-. The members of the class were fitted with weather boards, later replaced by Stirling cabs. The safety valves over the firebox were later replaced by those of Ramsbottom design over the centre of the boiler following a boiler explosion at Springhill in 1876. The class was later perpetuated by Stirling's brother James Stirling in his 65 class goods locomotives.

Withdrawal 
The locomotives were all withdrawn by 1903.

References 

 

052
Scrapped locomotives
Standard gauge steam locomotives of Great Britain
Railway locomotives introduced in 1864
0-4-0 locomotives
Kinetic Rain. Kinetic Rain is a moving sculpture at Singapore Changi Airport. It was installed in early July 2012 in the departure check-in hall of Terminal 1 as part of the terminal's refurbishment. Spanning an area of  and a height of , it has been billed as the world's largest kinetic sculpture.

The installation consists of two separate segments, installed several meters apart. Each segment consists of 608 copper-plated aluminum raindrops, each weighing  and is suspended by a thin wire. Computer-controlled motors attached to the wires can move each raindrop up and down independently, thereby allowing the raindrops to form elaborate moving shapes. The installation is programmed to arrange the raindrops such that they create the contour of flight-related objects such as an airplane, kite or hot air balloon during a 15-minute loop.

Kinetic Rain was created over a period of two years by artists, animators and programmers from the German design firm Art+Com. Its cost has not been made public. According to Art+Com, the sculpture "aims to be a source of identity for its location, and provides a moment for passengers to contemplate and reflect".

Intrusion and damage
On 2 November 2013, a woman climbed over a railing and perched on the netting below the sculpture, damaging the sculpture in the process. She was later arrested under the Mental Health Act.

References 

Changi Airport
2012 sculptures
Aluminium sculptures
Public art in Singapore
Alfred W. Craven. Alfred Wingate Craven (20 October 1810 – 27 March 1879) was a chief engineer of the Croton Aqueduct Department, was a founding member—and host of its initial meeting—of the American Society of Civil Engineers and Architects, which later became the American Society of Civil Engineers (ASCE).

Biography
He was born on 20 October 1810 in Washington, D.C. at the Washington Navy Yard, where his father and maternal grandfather were assigned by the United States Navy. His father was reassigned to Portsmouth, New Hampshire in 1813, where Alfred studied at the Phillips Exeter Academy, the Berwick Academy and then the American Literary, Scientific, and Military Academy from 1824 until September 1825. He graduated from Columbia University with an A.B. degree in 1829, studied law and then civil engineering.

In 1837 he was associated with General George S. Greene on professional work near Charleston and elsewhere. He was a railroad engineer and manager, and rapidly rose to the first rank in his profession.

Craven became engineer commissioner to the Croton Water Board of New York on its organization in 1849, and continued in that capacity until 1868. Among the many works projected and carried out during these years under his supervision were the building of the large reservoir in Central Park, the enlargement of pipes across High Bridge, and the construction of the reservoir in Boyd's Corners, Putnam County. He also caused to be made an accurate survey of Croton River valley, with a view of ascertaining its capacity for furnishing an adequate water supply, and was largely instrumental in securing the passage of the first law establishing a general sewerage system for New York City.

Later he was associated with Allan Campbell as a commissioner in the work of building the underground railway extending along 4th Avenue from the Grand Central Depot to Harlem River.

He was one of the original members of the American Society of Civil Engineers, a director for many years, and its president from November 1869, until November 1871.

He died on 27 March 1879 in Chiswick, England and was buried at Green-Wood Cemetery in Brooklyn, New York on 15 April 1879.

Family
Two of his brothers were noted naval officers:  Thomas Tingey Craven and Tunis Craven. Thomas Tingey Craven's son Alfred Craven (16 September 1846 – 30 September 1926), also an engineer, graduated from the United States Naval Academy in 1867 and worked on design for the New York City Subway. Another relative is John Craven, the former Chief Scientist of Polaris and the Special Projects Office.

References

External links
 
 

1810 births
1879 deaths
People from Portsmouth, New Hampshire
Phillips Exeter Academy alumni
Berwick Academy (Maine) alumni
Norwich University alumni
Columbia College (New York) alumni
American civil engineers
Engineers from Washington, D.C.
Burials at Green-Wood Cemetery
Ajith Madurapperuma. Ajith P. Madurapperuma is a Sri Lankan academic. Former Dean of the Faculty of Information Technology of the University of Moratuwa, he is currently the Deputy Director of the Interactive and Digital Media Institute of the National University of Singapore.

He was a senior lecture at the University of Colombo and a consultant to the ICTA. Madurapperuma was educated at the Royal College, Colombo and went on to an MSc in computer engineering from the Polytechnic José Antonio Echeverría as well as a MSc and a PhD in computer science from the University of Wales, Cardiff.

References

New Dean, Faculty of Information Technology

Academic staff of the University of Colombo
Academic staff of the University of Moratuwa
Alumni of Cardiff University
Alumni of Royal College, Colombo
Academic staff of the National University of Singapore
Sinhalese people
Sri Lankan academics
Sri Lankan academic administrators
Year of birth missing
Great Northern Railway Underpass. The Great Northern Railway Underpass at Stanley, North Dakota is a concrete deck girder bridge that was built in 1937. It is listed on the National Register of Historic Places.

According to its nomination, the bridge "is a heavily-built single-span steel stringer design with a concrete substructure. This design saw common use in the numerous structures built to carry North Dakota roadways under railroad lines, generally beginning in the 1930s."

References

Road bridges on the National Register of Historic Places in North Dakota
Bridges completed in 1937
National Register of Historic Places in Mountrail County, North Dakota
Steel bridges in the United States
Girder bridges in the United States
Concrete bridges in the United States
Great Northern Railway (U.S.) bridges
1937 establishments in North Dakota
Transportation in Mountrail County, North Dakota
Midland Continental Overpass. The Midland Continental Overpass near Jamestown, North Dakota was a steel cantilever beam bridge that was built in 1936.  It was listed on the National Register of Historic Places in 1997, and was delisted in 2024. The bridge crossed the Midland Continental Railroad track.

According to its nomination, the bridge is significant "for its association with efforts to modernize and improve North Dakota's roadway system during the New Deal era, including the state's first large-scale program of railroad-highway grade separation construction. The overpass is also eligible ... because it exhibits an unusual engineering design. The use of cantilevered spans during the historic
period, such as exhibited at this structure, is rare in North Dakota."  However, there are no records of the bridge's construction in county records.

References

Road bridges on the National Register of Historic Places in North Dakota
Bridges completed in 1936
National Register of Historic Places in Stutsman County, North Dakota
Steel bridges in the United States
Cantilever bridges in the United States
Transportation in Stutsman County, North Dakota
1936 establishments in North Dakota
Former National Register of Historic Places in North Dakota
West Park Bridge. The West Park Bridge across the Sheyenne River in Valley City, North Dakota is a concrete false arch structure that was built in 2007.  Together with the corresponding East Park Bridge, it brings Valley City's 4th Street across an oxbow of the Sheyenne River.  The bridge is a sympathetic replacement for a historic bridge, built in 1924, that was listed on the National Register of Historic Places in 1997.

The 1924 bridge was deemed significant as a good example of "early twentieth-century bridge design and construction philosophies in urban North Dakota", including having design emphasis on visual detail, and for its "aesthetic merit", relating to its unusual use of the false arch girder design and to its railings and lamps.

References

Road bridges on the National Register of Historic Places in North Dakota
Bridges completed in 1924
Bridges completed in 2007
National Register of Historic Places in Barnes County, North Dakota
Concrete bridges in the United States
Girder bridges in the United States
Transportation in Barnes County, North Dakota
1924 establishments in North Dakota
2007 establishments in North Dakota
Demolished but still listed on the National Register of Historic Places
Sheyenne River
Demolished bridges in the United States
Valley City, North Dakota
Portland Park Bridge. The Portland Park Bridge, also known as South Branch Goose River Bridge, near Portland, North Dakota is a Pratt through truss structure that was built in 1919 over the south branch of the Goose River. It was listed on the National Register of Historic Places. It was removed from the National Register in 2004.

References

Road bridges on the National Register of Historic Places in North Dakota
Bridges completed in 1919
Transportation in Traill County, North Dakota
National Register of Historic Places in Traill County, North Dakota
Steel bridges in the United States
Girder bridges in the United States
1919 establishments in North Dakota
Former National Register of Historic Places in North Dakota
Bridges over the Goose River (North Dakota)
Bara Dam. Bara Dam is a proposed small, low-head, earth core rockfill, hydroelectric dam with a capacity of 5.8 megawatts, located across Bara River at the confluence of Mastura River in Tirah Valley, Khyber Agency, FATA, Pakistan. It is part of a wider plan that consists in remodeling the Bara River, to promote agriculture.

Construction, which had not started yet as of late 2019, is expected to last 5 years.

The estimated cost of the project is US$311 million (), out of which $227 million for civil works and $28 million for electro-mechanical works are required.

Main uses
With the construction of the proposed Bara Dam, flood waters of Bara River will be stored. Gross storage of the reservoir is  of which an average of about  of water will be annually available for developing irrigated agriculture of command area of about . This project will produce 5.8 MW of power with an annual energy output of .

Other benefits
Damming the flow of Bara River will save the flood water for irrigated agriculture development, power generation and water supply for drinking and other domestic uses. The project will bring general uplift of the people in the area by creation of employment and business opportunities. These indirect benefits, such as employment opportunities and consequent rise in the living standard of the people, however cannot be quantified in monetary term. The direct receipt of the project will be available in shape of irrigation service fee (Abiana) and receipt of cost of sale of energy to consumers. The project would greatly increase the development of fisheries in the area and provide recreation and employment opportunities to the residents of the area.

Current status
 Feasibility Study completed in 2008.
 PC-I approved by ECNEC on 3 September 2009.
 Tenders of Bara Dam on EPC basis invited on 9 October, 5 November, 19 December 2009, 8 April 2010. No bid received.
 WAPDA appointed consultants for preparation of Project Planning Report and Tender Documents based on Detailed Engineering Design to invite Tenders on measurement (BOQ) basis.
 Detailed Engineering Design of the Project completed in December, 2011.
 Detailed Level EIA and RAP Studies are in Progress.
 Tenders for construction will be invited on finalization of Project Planning Report and Tender Documents and on availability of funds for the Project.
In 2019, government proposed to allocate Rs 230 million to initiate the project by 2020.

See also 

 List of dams and reservoirs in Pakistan
 List of power stations in Pakistan

References 

Dams completed in 1963
Dams in Pakistan
Proposed hydroelectric power stations
Run-of-the-river power stations
Hydroelectric power stations in Pakistan
Proposed renewable energy power stations in Pakistan
Khyber District
Dams in Khyber Pakhtunkhwa
1946 Amsterdam KLM Douglas C-47 crash. The 1946 KLM Douglas C-47 Amsterdam accident was the crash of a KLM Royal Dutch Airlines flight from London to Amsterdam on 14 November 1946. The accident occurred as the aircraft was attempting to land at Amsterdam's airport in poor weather. All 26 passengers and crew on board were killed.

Accident
The civil-use converted C-47 Skytrain was on a scheduled flight from London, England to Amsterdam in the Netherlands. The crew was cleared to land the aircraft at Schiphol Airport in poor weather. The first attempt to land failed and the crew had to perform a go-around. The second approach to land also failed. On the third approach to land the aircraft made a sudden turn to the left, apparently trying to line up with the runway. During this turn the aircraft struck the ground and crashed. The aircraft caught fire on impact, killing all 21 passengers and five crew on board. The victims included Dutch novelist Herman de Man.

At the time it happened, the accident was the worst aviation accident in the history of the Netherlands. Eight days earlier another KLM DC-3 operating on the same route in the opposite direction, crashed on approach to London's Croydon Airport in poor weather. There were no fatalities in the London crash but the aircraft was written off.

References

External links
 Crash photo of PH-TBW

K
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FlyNano Nano. The FlyNano Nano is a Finnish electric single seat seaplane, designed by Aki Suokas and produced by FlyNano of Lahti. It was introduced at AERO Friedrichshafen in 2011 and the prototype Proto version first flew on 11 June 2012. When it was available the aircraft was supplied as a complete ready-to-fly-aircraft.

By 2022 the company website domain was for sale and it is likely that the company ceased operations in about 2020.

Design and development
The aircraft was designed to comply with the EC 216/2008 Annex 2 (j) rules for deregulated class under 70 kg (154 lb) empty weight. It features a joined wing box wing, a single-seat open cockpit without a windshield, a hull for water operations, but no wheeled landing gear and a single electric engine in tractor configuration mounted above the cockpit.

The aircraft is made from carbon fibre. Its  span wing has no flaps. The initial plan was to produce several models with different powerplant options, including a two-stroke powered ultralight, a high-powered racing model and an electric model. The company has more recently announced that only the electric model will be produced, citing that "it's quiet, efficient, eco-friendly and it's easy to maintain". The aircraft wing can be removed for storage or ground transportation.

Specifications (Nano)

See also

References

External links
Official website archives on Archive.org
First flight official video on Archive.org

2010s Finnish ultralight aircraft
Electric aircraft
Single-engined tractor aircraft
Aircraft first flown in 2012
Biplanes with negative stagger
Closed-wing aircraft