omniomni/omni-engineering huggingface dataset:
Siddeley-Deasy R.T.1. The Siddeley Deasy R.T.1 was designed in 1917 as a R.E.8 replacement.  Like the R.E.8, it was a two-seat single-engined biplane built for reconnaissance work.

Development

During World War I, the car makers Siddeley-Deasy had been one of several manufacturers of the Royal Aircraft Factory R.E.8.  Though this aircraft was produced in large numbers, it was rumoured that the upper wing could fail in dives and that its spinning characteristics were dangerous. The R.T.1, the first of Siddeley Deasy's own designs set out to answer these criticisms in an aircraft of better performance.

The main difference between the R.T.1 and the R.E.8 was in the wings, which were completely new.  The large overhang of the R.E.8's upper wing, the source of the structural concerns, was gone and the R.T.1 was a two bay biplane with equal span constant chord wings, though the lower ones were significantly narrower than the upper.   There were only small changes to the R.E.8 fuselage: the decking aft of the gunner, together with his gun-ring were raised, and the fin and rudder were larger and more rounded.

Only three R.T.1s were built, differing chiefly in their engines.  The first and third were powered by a 200 hp (150 kW) Hispano-Suiza and the second by the 150 hp (110 kW) RAF 4A also used in the R.E.8.  The Hispano-Suiza installations differed in their nose and radiator arrangements: the first used a rectangular nose radiator like that of the S.E.5, whereas the third had a neatly rounded nose with a small chin radiator.  The ailerons on the third aircraft were extended beyond the wing-tips to allow horn balancing.

Direct comparisons of the RAF 4A powered R.T.1 and the R.E.8 showed the former had much the same top speed but better climb and ceiling because of its lower wing loading.  The more powerful engine in the third R.T.1 increased the speed by some 10 mph (16 mph) and the ceiling by 2000 ft over the second machine.

The R.T.1 flew well and one went for service trials on the Front, the other two going to training units, but with the war at its end there was no chance of further orders.

Specifications (Third aircraft)

References

Notes

Bibliography

1910s British military reconnaissance aircraft
R.T.1
Biplanes
Aircraft first flown in 1917
Chicago, Milwaukee, St. Paul and Pacific Freight House. The Chicago, Milwaukee, St. Paul and Pacific Freight House, known locally as The Freight House, is a historic building in Downtown Davenport, Iowa, United States.  It was listed on the National Register of Historic Places in 1985.

History
This Freight House was built by the Chicago, Milwaukee, St. Paul and Pacific Railroad (The Milwaukee Road) in 1917 in response to the increased freight traffic in Davenport before the country entered World War I. It was built on the levee near the Mississippi River.  The railroad built the Crescent Rail Bridge with the Chicago, Burlington and Quincy Railroad to the west in 1901, and they joined in building Union Station across Ripley Street in 1924.  Railroad freight factored in the development of the city's wholesale and retail commercial economy from the 1890s onward. Because of Davenport's location, railroad freight could be charged favorable eastern rates while western rates could also be accessed.  This gave the city an advantage over in-state communities.

The freight house was placed on the National Register of Historic Places due to its association with the commercial development of Davenport, Iowa.  After being renovated in the 1990s, The Freight House has seen a variety of uses, such as a comedy club, sports bar, piano bar, and restaurant.  Currently, the freight house is home to several small businesses featuring locally grown items, such as a deli, a grocery hub, and a tap room for a local brewery.

Architecture
The building is rectangular in shape and built of brick with concrete floors and columns.  The eastern end is two stories and held the offices. The west end held the warehouse storage space in a single story.  The facility was located between the rail siding and thoroughfare where cargo could be easily transferred from one transportation system to another.

References

External links

 Freight House Farmers Market

Railway stations in the United States opened in 1917
Davenport
Railway freight houses on the National Register of Historic Places in Iowa
National Register of Historic Places in Davenport, Iowa
Lang Propellers. Lang Propellers was a British company that manufactured aircraft propellers. The company operated independently from 1913 to 1936.

History

In 1909 Arthur Alexander Dashwood Lang became interested in aircraft propeller design and made some propellers in his own name. Lang developed and patented processes covering the tips of propeller blades with copper or fabric. These were used for example on Royal Aircraft Factory B.E.2C aircraft. In 1910 he went to work for the British & Colonial Aeroplane Company (later the Bristol Aircraft Co.) as manager of the propeller shop. He left in 1912 and set up in partnership with David Garnett at the Riverside Works Weybridge, Surrey.The company was called Lang, Garnett & Co. This enterprise lasted a matter of months before Garnett left the firm. Lang established the Lang Propeller company in 1913 and continued to use the "Riverside Works."  These premises were later used by The Airscrew Company to manufacture propellers and associated components. At its peak the company supplied wooden propellers to nearly every aeroplane company in England.

In April 1936 the Aeronautical Corporation of Great Britain, Ltd was incorporated. The new company was formed to acquire the assets of companies involved in the UK production of the Aeronca aircraft, and to acquire from Lang Propellers Ltd., the whole of its assets. These comprised rights under British Patents relating to machines for shaping airscrew blades applied for by Lang. The new company bought a factory at Walton near Peterborough that had been built during the first world war for Frederick Sage & Company for aircraft production.

Lang USA
The Lang Propeller Company of America Inc. was established as a Manhattan corporation with a capital of $45,000, with Lang, L.L. Montant and E.N. Bush as Directors in August 1917.  Dashwood Lang had just sold his UK company to the Sopwith Aircraft company and this was a new enterprise. The US Navy contracted Lang to supply them with propellers and paid for the construction of a factory at Whitestone on Long Island. By late 1917 the company name was changed to Lang Products Co. Prior to the factory being completed Lang subcontracted the manufacture of his designs to local US and Canadian producers.

Arthur Alexander Dashwood Lang
Lang formed another company A. D. Lang Ltd. In 1921 it was described as being general manufacturers, buying and selling agents, printers, lithographers, manufacturers of chemicals with offices at 4, Vigo Street, London W1.
In addition to his work in developing propellers and associated equipment, Lang found time in 1923 to patent a wheel for vehicles.
In 1936 Lang joined the Board of Hordern-Richmond, another British company that was closely involved in the development and production of airscrews and propellers.

See also
List of aircraft propeller manufacturers

References

Defunct aircraft manufacturers of England
Manufacturing companies established in 1913
Aerospace companies of England
Aircraft propeller manufacturers
1913 establishments in England
Victorian Partnership for Advanced Computing. The Victorian Partnership for Advanced Computing (VPAC) was a leading, independent advanced computing R&D service provider and not-for-profit research agency established in 2000 by a consortium of Victorian universities: Deakin University, La Trobe University, Monash University, RMIT University, Swinburne University of Technology, The University of Melbourne, University of Ballarat, Victoria University.

VPAC provided expert services, training and support in high-performance computing as well as professional research and development services in the application of advanced computing in the fields of engineering, geospatial, health, life sciences, astrophysical research and grid computing to over 800 researchers from universities and research institutes across Victoria, as well as its sister organisation in other states.  VPAC specialists also provided HPC support to multinational vendors and their customers across Australia.

VPAC worked together with the Victorian eResearch Strategic Initiative to promote the uptake of advanced computing in Australian scientific research and development, and the two organisations merged to form the V3 Alliance in 2013.  V3 HPC operations, HPC support, and academic advanced computing initiatives were rolled into the Victorian universities and ceased operation as an independent entity in December 2015.

VPAC's engineering arm worked with many major Australian and multinational companies in the optimisation and refinement of products through the use of HPC, and that group continues business as VPAC-Innovations.

In 2011, it was announced that VPAC, Monash University and Australian Synchrotron had chosen an IBM iDataPlex dx360 M3 for the Multi-modal Australian Sciences Imaging and Visualisation Environment (MASSIVE) facility.

Mission statement

VPACs mission was to promote the use of Advanced Computing amongst Australian researchers. VPAC operated a state of the art, internationally recognised Supercomputing Facility featuring High Performance Computing Clusters and Software, Advanced Visualisation and Collaboration Tools and Grid Resources, as well as provided consulting services and expertise for applications.

References

External links
 http://www.vpac-innovations.com.au

Education in Victoria (state)
Scientific organisations based in Australia
Non-profit organisations based in Victoria (state)
INS Aditya (A59). INS Aditya (A59) is an Aditya class replenishment and repair ship currently in service with the Indian Navy. The ship was launched on 15 November 1993  and commissioned on 3 April 2000.

INS Aditya is a fully air-conditioned and lengthened version of the original Deepak class, but with a multipurpose workshop and with four RAS (Replenishment At Sea) stations alongside. The ship was built at Garden Reach Shipbuilders and Engineers (GRSE). Building progress was very slow and the ship was plagued by propulsion problems, during her sea trials in September 1999.

Description 
The ship has a cargo capacity of 2250 m³ water, 2170 m³ ammunition and stores and 14,200 m³ diesel and aviation kerosene. The ship can carry 12,000 tons of liquid cargo, comprising LSHSD, aviation kerosene, distilled & fresh water and 5000 tons of solid cargo. The ship features a Hallapa deck and Canadian Hepburn RAS (Replenishment At Sea) equipment. Aditya is also equipped with a 2-ton heavy jackstay and a 20-ton crane. It can replenish four warships & one rotor aircraft simultaneously and was designed to be able to serve as command and control platform. It can refuel at the maximum rate of 600 tonnes per hour.

Aditya was initially armed with light and medium machine guns. The self-defence capability was added by installing new close-in weapons like anti-aircraft and anti-missile guns and missiles. Even though it is smaller than , it has more advanced capabilities. It carries a helicopter as compared to only a helicopter deck of Jyoti.

Service history
In 2010, INS Aditya, along with three other warships of the navy - INS Mysore, INS Tabar and INS Ganga, were deployed to South Africa and took part in the 2nd IBSAMAR, the joint exercise of the navies of India, Brazil and South Africa. A total of 11 warships took part in the exercise, which was conducted off the coast of Durban from 13 to 27 September.

In mid-July 2024, Indian Navy's INS Aditya and INS Visakhapatnam conducted an exercise with US Navy's Carrier Strike Group 9 centred on USS Theodore Roosevelt along with Carrier Air Wing 11 and USS Daniel Inouye in the Indian Ocean.

Gallery

See also

INS Deepak (A50)
INS Shakti (A57)
INS Jyoti (A58)

References 

 Aditya class at Bharat-Rakshak – Retrieved on 2009-04-19

Aditya
Ships built in India
1993 ships
Homelite Corporation. Homelite Corporation is an American power equipment manufacturer, i.e. (chainsaws, leafs blowers, trimmers), that became notable for being one of the largest post-World War II manufacturers of portable electrical generators and  professional and consumer level chainsaws, as well as holding the distinction of producing the world's first one-man operated chainsaw.

History 
Beginnings

In 1921, entrepreneur Charles H. Ferguson of Port Chester, New York, invented a lightweight, portable, gasoline-powered electrical generator. His newly founded company, the Home Electric Lighting Company (later abbreviated to Homelite), made it possible for thousands of rural farms and households to enjoy the convenience of electricity, where it would be years before land lines would reach many of these remote areas. In addition, many of Mr. Ferguson's generators played a significant role in the war effort, providing portable electricity on demand for the troops during World War II.

Chainsaws

In 1946, Homelite manufactured its first chainsaw, an electrical model, and in 1949, released another power-equipment innovation in the form of the first chainsaw that featured one-man operation (previous saws were generally too large and bulky to be operated by a single individual). By the mid-1960s, Homelite had been firmly established as one of the largest manufacturers of chainsaws in the world, with models ranging from small brush cutters, to the most advanced professional logging saws. The year 1963 saw the introduction of the world's first "lightweight" chainsaw, the magnesium-alloy framed Homelite XL-12; the numeral twelve denoting that the power-head weighed a mere twelve pounds. This saw is widely regarded as one of the most recognizable and well-known chainsaws of all time. In addition, the XL-12 achieved notoriety among horror film aficionados, being used in films like The Evil Dead and its sequels.

Textron acquired Homelite in the 1950s.

Beginning in the late 1970s, Homelite gradually expanded its power equipment line to include string trimmers, leaf blowers, push mowers, and hedge trimmers. John Deere acquired the brand in 1994.

Techtronic Industries acquired Homelite from John Deere in 2001. Homelite has shifted its production primarily to consumer level lawn and garden equipment and light duty chainsaws. Replacement parts for the older, professional-grade, saws are generally limited to new old stock (NOS) and salvage parts. However, these saws were built to last, and a good percentage of them are still in use to this day. Homelite's parent company is headquartered in Hong Kong.

References

External links
 

Agricultural machinery manufacturers of the United States
Tool manufacturing companies of the United States
Boeng Tonle Chhmar. Boeng Tonle Chhmar is a  large multiple use management area in Cambodia bordering Tonlé Sap lake that was established in 1999. It is located in Peam Bang Commune in Kampong Thom Province.

Boeng Tonle Chhmar is a state owned sanctuary. The wildlife sanctuary consists of a lake surrounded by flooded forest on the north eastern side of the Tonle Sap lake. It contains areas of permanent open water, a system of small waterways and areas of flooded forest. In the wet season, Boeng Tonle Chhmar ceases to be a discrete lake and becomes part of the much enlarged Tonle Sap. The sanctuary is an example of near natural South Asian wetland. The area plays an important role in the hydrology and biology of two major river systems, the Stoung river and the Chikreng river. This area is home to a large number of diverse plant, fish, mammal and waterbird species. Many of these are listed as rare, vulnerable, or globally endangered. The Tonle Sap lake and its surrounding biosphere play a vital role in the Cambodian economy and several million depend on fish from the lake as a source of protein. Boeng Tonle Chhmar is one of three Ramsar Convention sites in Cambodia with the site number 997.

Location and access 

Boeng Tonle Chhmar and the connected creek system are located on the flood plain of the Tonle Sap. This flood plain in turn is part of the Mekong River Basin. The Boeng Chhmar area is close to the center of the lake and located on the northern shore. To the south and the west, Boeng Chhmar joins the Tonle Sap lakeshore. While to the north and the east the protected area joins with areas of floodplain forest. The protected area lies within the administrative boundaries of Peam Bang commune, Stoung District, Kampong Thom Province. The commune contains five floating villages - Pov Veuy, Pechakrei, Peam Bang, Ba Lat and Doun Sdaeng which all lie in the vicinity of the protected area.

Birds 
Beong Chhmar is home to important colonies of numerous globally or regionally threatened bird species including the brahminy kite (Haliastur indus), painted stork (Mycteria leucocephala), black-necked stork (Ephippiorhynchus asiaticus), lesser adjutant (Leptoptilos javanicus), greater adjutant (Leptoptilos dubius), spot-billed pelican (Pelecanus philippensis), Indian cormorant (Phalacrocorax fuscicollis) and the Oriental darter (Anhinga melanogaster).

References 

Geography of Kampong Thom province
Protected areas of Cambodia
Protected areas established in 1999
Ramsar sites in Cambodia
1999 establishments in Cambodia
Dithiooxamide. Dithiooxamide, also known as rubeanic acid, is an organic compound. It is the sulfur analog of oxamide. It acts as a chelating agent, e.g. in the detection or determination of copper. It has also been used as a building block in the synthesis of cyclen.

Materials chemistry
Rubeanic acid has received much attention as a precursor to photonic or electroactive materials. It is a precursor to inorganic C-S-N rings.  It condenses with acid chlorides to thiazoles.  It forms coordination polymers.

References

Thioamides
Boeing Model 81. The Boeing Model 81 was an American training aircraft built by Boeing in 1928. The Model 81 was a development of the Model 64. It was powered by a newly developed engine, the 125 hp Fairchild-Caminez 4-cylinder radial engine. Operating at a much lower rpm than most engines (1000 rpm) it required the use of a large high-pitch propeller.

After initial flight tests with the Fairchild-Caminez, the prototype was refitted with a 145 hp Axelson engine, redesignated Model 81A and delivered to the Boeing School of Aeronautics. There, it was re-engined a number of times, first with a 115 hp Axelson engine, redesignated Model 81B. It then received a 165 hp Wright J-6-5, then a 100 hp Kinner K-5 and a redesigned vertical tail. Redesignated Model 81C, it would later be removed from training service, re-engined with an Axelson engine, and used as a classroom trainer.

On 21 June 1928, the second Model 81 built was delivered to the US Navy at Anacostia, Maryland for $8,300, and redesignated Boeing XN2B. Its trial with the Fairchild engine was unsatisfactory, and on 10 January 1929 it was refitted by Wright Aeronautical with a 160 hp Wright J-6-5 engine. Despite increased performance, it was not ordered into production.

Variants
81
Original Caminez-engined aircraft
81A
145 hp Axelson engine
81B
115 hp Axelson engine
81C
100 hp Kinner K-5, redesigned tail.
XN2B
US Navy designation.

Operators

Boeing School of Aeronautics

Specifications (XN2B)

References

Bowers, Peter M. Boeing aircraft since 1916. London: Putnam Aeronautical Books, 1989. 

Boeing Model 081
081
Single-engined tractor aircraft
Biplanes
Aircraft first flown in 1928
Crawford Greenewalt. Crawford Hallock Greenewalt (August 16, 1902 – September 28, 1993) was an American chemical engineer who was president of the DuPont Company from 1948 to 1962, and chairman from 1962 to 1967.

Early life

Crawford Hallock Greenewalt was born in Cummington, Massachusetts, the son of Frank Lindsay Greenewalt and Mary Hallock-Greenewalt, an inventor and pianist born in Beirut. In 1922, he earned a Bachelor of Science degree in chemical engineering from Massachusetts Institute of Technology, where he joined Theta Chi fraternity. He later became a Life Member of the MIT Corporation in 1951, and emeritus in 1977.

Career 
While at DuPont, Greenewalt was a key figure in their development of nylon and their nuclear power program. He was awarded the Lavoisier Medal for Technical Achievement by the DuPont Company in 1991.

His widely varied interests included ornithology and high-speed photography via his friend Harold E. "Doc" Edgerton. Greenewalt published a book of 70 high-speed photographs of hummingbirds in 1960 (Greenewalt, C.H. 1960. Hummingbirds Doubleday & Co., Garden City, New York.). And later, Dimensional relationships for flying animals Washington. Smithsonian Institution, 1962. In 1968, he published Bird Song. Acoustics and Physiology Smithsonian Institution Press, Washington, D.C. He was president of the American Philosophical Society.

Greenewalt is the subject of the film The Uncommon Man: Crawford H. Greenewalt, produced by the Atomic Heritage Foundation.

Personal life 
Greenewalt and his wife Margaretta (née Du Pont) had two sons, Crawford "Greenie" Greenewalt Jr. (1937-2012) and David Greenewalt, and daughter, Nancy L. Frederick. The younger Crawford was a professor of classical archaeology at the University of California, Berkeley who was among the leaders of the Archaeological Exploration of Sardis. David died in 2003.

Greenewalt died in Wilmington, Delaware in 1993, one day after having a stroke.

See also
John Mulchaey, holds the Crawford H. Greenewalt chair at the Carnegie Observatories, of which he is also the director

References

External links

1965 Audio Interview with Crawford Greenewalt by Stephane Groueff Voices of the Manhattan Project

In memoriam: Crawford H. Greenewalt
The Crawford Greenewalt Manhattan Project Diaries
 Finding aid for Crawford Greenewalt photograph collection at Hagley Museum and Library

1902 births
1993 deaths
People from Cummington, Massachusetts
DuPont people
American chemical engineers
William Penn Charter School alumni
MIT School of Engineering alumni
United States Army Science Board people
Manhattan Project people
20th-century American engineers
Member of the Mont Pelerin Society
20th-century American chemists
Star Voyager (Atari 2600). Star Voyager is a first-person space combat game designed by Bob Smith for the Atari 2600 and published in 1982 by Imagic.

Gameplay

In Star Voyager, the player has to save the Capital Starport (although the player never sees it in the game). A two-player mode allows two people to become either the Star Voyager or the enemy fleet. The commander of the Star Voyager has the ability to use missiles or a laser beam in order to stop the enemy. Star portals play a role in transporting the Star Voyager into another part of the galaxy. The game ends when the player dies or runs out of energy. The gameplay is loosely similar to that of the Atari 8-bit computers game Star Raiders (1979).

References

1982 video games
Atari 2600 games
Atari 2600-only games
Imagic games
Multiplayer and single-player video games
North America-exclusive video games
Science fiction video games
Space combat simulators
Video games developed in the United States