omniomni/omni-engineering huggingface dataset:
Datatron. The Datatron is a family of decimal vacuum tube computers developed by ElectroData Corporation and first shipped in 1954. The Datatron was later marketed by Burroughs Corporation after Burroughs acquired ElectroData in 1956. The Burroughs models of this machine were still in use into the 1960s.

History
Consolidated Electrodynamics Corporation (CEC), ElectroData's parent corporation, first pre-announced the Datatron in 1952 as the "CEC 30-201". Known also as CEC 30-203 (ElectroData 203), ElectroData 204 or 205, Burroughs 205 (different names signify the development and addition of new peripherals).

The first systems  were equipped with an "Electrodata 203" processor and were shipped to the Jet Propulsion Laboratory 
(JPL) and the National Bureau of Standards (NBS) in 1954. That same year design began on the "30-240" processor, enhanced to support magnetic tape. The name "Datatron" was first used in 1955.

Description
The Datatron has a word size of ten decimal digits plus a sign. Character data occupies two digits per character. A magnetic drum is used for memory. The drum rotates at 3570 rotations per minute (RPM) and stores 4000 words on 20 tracks (called bands). It weighed about . A later model, the Burroughs 220, added a small amount of magnetic core memory. A later model, the Datatron 205 was sold by Burroughs as the Burroughs 205.

References

External links
 
 Photo of Datatron system at Georgia Institute of Technology in 1959
 ElectroData/Burroughs Datatron 205 Emulator

1950s computers
Vacuum tube computers
Decimal computers
Ural Diesel Engine Plant. Ural Diesel Engine Plant () is a company based in Yekaterinburg, Russia.

History
The plant was formed in 1941 as Ural Turbine Factory as part of a large scale movement of industrial capacity from western Russia during the Second World War. The engine manufacturing facilities of the Kirov Plant in Leningrad and the Kharkov diesel factory 75 (Харьковский дизельный завод №75) were transported to the Ural region of Russia (Sverdlovsk).

The factory was in production by August 1941, and produced M-40 aero engines and V-2 engines for tanks. By 1942 production was over 20 engines per day, and in 1942 received an Order of Lenin and in 1943 an Order of the Red Banner of Labour for its contributions. By August 1945 the plant had produced 25,000 engines.

After the end of WWII production of diesel engines continued, with the plant producing engines for oil drilling, excavators, locomotives and mobile generators. Exports of engines began in 1956. After 1962 all engines produced were turbocharged. After 1979 the factory became a key supplier of diesel engines for Belarusian dump truck manufacturer BelAZ.

In 2003 the company became and open joint stock company as ОАО "Турбомоторный завод", in 2008 it was acquired by the Sinara Group and became the limited liability company Ural diesel engine plant ( ООО Уральский дизель-моторный завод УДМЗ).

As of 2010 the plant produces diesel generators, turbochargers and diesel engines for locomotives and heavy off-road equipment in the  range.

Engines 
 DM-185 V12 UDMZ up to 3 (0.7 1 - 4.7 MW), 7+ MW, plans for 10 - 17+ MW
 at KMZ - RD and UDMZ
 8DM21L
 DM-21 V6 (1050-1500 hp) V8 (1300-2000 hp) V12 (2000-3000)  
 27 29
 land vehicles
 V-2 derivatives along ChTZ and Barnaul BTM
 KMZ RD
 ADG1000 
 ADG6000
 various V12 V16 and V18 from 3 5 MW 58D/A/E up to 8 9 MW 
 68B, 68G, 85D 86B 86G 8,8 MW V18

References

External links
 

Sinara Group
Manufacturing companies based in Yekaterinburg
Manufacturing companies established in 1941
Diesel engine manufacturers
Engine manufacturers of Russia
1941 establishments in the Soviet Union
Engine manufacturers of the Soviet Union
J/28. The J/28 is an American sailboat designed by Rod Johnstone and first built in 1986.

Production
The boat was built by J/Boats (Tillotson Pearson) in the United States. The company completed 71 examples between 1986 and 1988, but it is now out of production.

Design

The J/28 is a small recreational keelboat, built predominantly of fiberglass, with wood trim. It has a fractional sloop rig, an internally-mounted spade-type rudder and a fixed fin keel. It displaces  and carries  of ballast.

The boat has a draft of  with the standard keel fitted.

The boat is fitted with a Japanese Yanmar 2GM diesel engine of . The fuel tank holds  and the fresh water tank has a capacity of .

The design has a hull speed of .

See also
List of sailing boat types

Similar sailboats
Alerion Express 28
Aloha 28
Beneteau First 285
Bristol Channel Cutter
Cal 28
Catalina 28
Cumulus 28
Grampian 28
Hunter 28
Hunter 28.5
Hunter 280
O'Day 28
Pearson 28
Sabre 28
Sea Sprite 27
Sirius 28
Tanzer 28
TES 28 Magnam
Viking 28

References

External links

Keelboats
1980s sailboat type designs
Sailing yachts
Sailboat type designs by Rod Johnstone
Sailboat types built by J/Boats
James Longuski. James Michael Longuski (born 1951) is an American scientist, inventor, writer, and educator known for his contributions to astrodynamics and space mission design. He worked as a space mission designer at Jet Propulsion Laboratory (JPL) for NASA starting in 1979. Longuski joined the faculty at Purdue University School of Aeronautics and Astronautics in 1988 and served until after the fall semester 2023.

Education
Longuski received his PhD in Aerospace Engineering from the University of Michigan in 1979 supervised by Nguyễn Xuân Vinh.

Career and research
In the late 1990s together with Nathan Strange of JPL, he developed the method and coined the term, the “Tisserand graph,”  widely used for gravity-assist spacecraft trajectory design (a concept independently introduced by Labunsky et al.). He also developed the technique and coined the term, “V-Infinity Leveraging,” which uses a deep space maneuver to leverage (increase or decrease) the hyperbolic velocity at the next gravity-assist body.

Longuski began work on Mars cycler trajectories in 1985 when Buzz Aldrin visited JPL looking for verification of his proposed trajectory now known as the Aldrin cycler. The concept involves placing a large spacecraft (or astronaut hotel) in orbit around the Sun that continually flies by Mars and Earth, providing a permanent human transportation system between those planets. Longuski was able to verify Aldrin's concept and together they developed several versions of cycler trajectories.

In 2001, Longuski with Ephraim Fischbach and Daniel Scheeres proposed a test of Albert Einstein's General Theory of Relativity based on spacecraft trajectories. Longuski is co-inventor with Dan Javorsek of a Method of Velocity Precision Pointing in Spin-Stabilized Spacecraft or Rockets.

Quotes

Books 
Longuski has published four books: 

 Advice to Rocket Scientists
 The Seven Secrets of How to Think Like a Rocket Scientist 
 Optimal Control with Aerospace Applications
 Introduction to Orbital Perturbations

References

American scientists
Purdue University faculty
Jet Propulsion Laboratory faculty
Living people
1951 births
University of Michigan College of Engineering alumni
Michael Trick. Michael Alan Trick is an operations researcher who studies combinatorial optimization, and is known for his work on sports scheduling, transportation scheduling, and social choice. He is the Harry B. and James H. Higgins Professor of Operations Research in the Tepper School of Business at Carnegie Mellon University (CMU), and dean of Carnegie Mellon University in Qatar.

Trick earned a bachelor's degree in combinatorics and optimization and computer science from the University of Waterloo in 1982,
a master's degree in operations research from the Georgia Institute of Technology (Georgia Tech) in 1984,
and a PhD in industrial and systems engineering from Georgia Tech in 1987.
His dissertation, Networks with Additional Structured Constraints, was jointly supervised by John Bartholdi and H. Donald Ratliff.
After postdoctoral research at the Institute for Mathematics and its Applications in Minneapolis and the Institut für Ökonometrie und Operations Research at the University of Bonn, he joined the CMU faculty in 1989. He became the Bosch Professor of Operations Research in 2003, and the Higgins Professor in 2012.

Trick founded the online operations research news site, INFORMS Online, in 1995. He was president of INFORMS in 2002.
In 2006, he was elected as a fellow of INFORMS.
He won the George E. Kimball Medal of INFORMS in 2009.

References

External links
Home page

Year of birth missing (living people)
Living people
American operations researchers
University of Waterloo alumni
Georgia Tech faculty
Carnegie Mellon University faculty
Fellows of the Institute for Operations Research and the Management Sciences
Viktor Tolmachev. Viktor Tolmachev (11 August 1934 – 7 June 2018) was a Russian engineer. He was a member of the Russian Academy of Natural Sciences and chief designer of the Antonov An-124 Ruslan and An-225 Mriya transport aircraft.

Biography
Tolmachev was born in 1934 in Kursk, Russia, USSR. After graduating from the Kharkiv Aviation Institute in 1959 he joined the Antonov Design Bureau in Kiev, Ukrainian SSR. During his time there, he participated in the design, engineering and updating of almost every Antonov airplane, including the An-2, An-8, An-10, An-12, An-14, An-22, An-24, An-26, An-32, An-28, An-124 and the An-225 Mriya.

Tolmachev was later the Technical Director at Volga-Dnepr Airlines, one of the main An-124 operators. There he managed the airworthiness of Volga-Dnepr's heavy-lift fleet, and was involved in the planning for the successor to the An-124.

Viktor Tolmachev has dedicated over fifty years of his life to the national aviation industry, contributing to design, development and production of nearly all Antonov airplane models and versions, including An-2, An-14, An-8, An-10, An-12, An-24, An-22, An-26, An-32 and An-28. He worked on An-124 project from design and development phase through the launch of production and entry into service.

In 1983 Viktor Tolmachev was appointed Deputy Chief Designer and then took up the post of Chief Designer in Antonov An-124 Project in 1985. Later, he led the design of its six-engine version - An-225 Mriya. He initiated the process of application for certification of An-124 as a commercial aircraft, which resulted in successful certification of commercial version An-124-100 in 1992.

Victor Tolmachev made a great contribution to the establishment and development of Volga-Dnepr Group.

From 1991 to 2002 he was Technical Director and then, from 1997 to 2002, chairman of the Board of Directors of Volga-Dnepr Airlines. From 2002 to 2016 he held the post of Chief Technical Officer of Volga-Dnepr Group. From June 2016, we worked as an advisor to President of the Group and as a mentor on engineering policy.

Victor Tolmachev is the author of over 100 engineering research works and the inventor of a number of aeronautical devices. He was a member of Russian Academy of Natural Sciences and International Academy of Inventors.

References

1934 births
2018 deaths
Antonov aircraft
Aircraft designers
Russian aerospace engineers
People from Kursk
Herbert T. Ueda. Herbert T. Ueda (April 17, 1929 - June 13, 2020) was an American ice drilling engineer.

Ueda was born and raised in the Puyallup Valley in Washington.  His parents were farm laborers, and were of Japanese descent.  The Ueda family was interned in Idaho's Minidoka War Relocation Center for three years, beginning in the summer of 1942, after the Japanese attack on Pearl Harbor and signing of Executive Order 9066.  He was drafted into the Army in 1951 for two years, and attended the University of Illinois, first at Navy Pier and then at Champaign-Urbana, graduating as a mechanical engineer in 1958.  Later that year he was hired by Lyle Hansen to work at the Snow, Ice, and Permafrost Research Establishment (SIPRE).

Ueda worked on the development of a thermal drill for SIPRE, initially under Fred Pollack; when Pollack left Ueda took over the project.  It was tested in Greenland, at Camp Tuto and Camp Century. in the later 1950s and early 1960s, reaching over 500 feet in 1961, over 700 feet depth in 1962, and almost 900 feet in 1963.  At that point they began working on adapting a cable-suspended electromechanical drill, designed by Armais Arutunoff for mineral drilling, to be used in ice.  A secondhand drill was acquired in 1963, and in 1964, when the thermal drill reached 1800 feet, they switched to using the electromechanical drill, and it worked well.  After two more seasons of drilling it finally reached bedrock at about 4,550 ft.  Ueda later described it as "the most satisfying moment of my life, or of my career".

In 1966 and 1967 he was at Byrd Station in the Antarctic, where the drill was used to reach 7102 feet at bedrock.  After this he worked on building drills for other organizations, including Ohio State and the Australian National Antarctic Research Expeditions (ANARE).  He worked on the Ross Ice Shelf Project with John Rand in the 1970s, and then worked on the DYE sites in Greenland.  He retired from SIPRE (by this time renamed to Cold Regions Research and Engineering Laboratory) in 1987, and worked for the Polar Ice Coring Office (PICO) for a while as technical director of operations, working for John Kelle.  In 1989 he visited Greenland to work on the GISP 2 program.

Ueda died of natural causes in 2020.

References

Sources 

1929 births
2020 deaths
Japanese-American internees
American military personnel of Japanese descent
Grainger College of Engineering alumni
American mechanical engineers
American glaciologists
Armais Arutunoff. Armais Sergeevich Arutunoff (June 21, 1893 - February 1978) was an inventor of technology for oil drilling.  He was born in Tiflis, then part of the Russian Empire, into an Armenian family.  He emigrated to the United States in 1923, and moved to Oklahoma in 1928, where he started a company to build an electric submersible pump for use at the bottom of oil boreholes.  By 1938 it is estimated that two percent of all oil produced in the US was lifted by an Arutunoff pump.  He was inducted into the Oklahoma Hall of Fame in 1974.  The company he started, soon renamed Reda Pump, an acronym of Russian Electrical Dynamo of Arutunoff, was acquired by Schlumberger.  He died in February 1978 in Bartlesville.

References 

Mechanical engineers
1893 births
1978 deaths
Engineers from Tbilisi
 Soviet Armenians
Soviet emigrants to the United States
Gravity casting. Gravity casting is among the oldest known processes for fabricating metals and metal alloys.  It involves the pouring of molten metal from a crucible into a mold under only the force of gravity, without the use of pressurized gases, vacuums, or centrifugal force.  Small-scale molds used for this form of casting have most commonly been made of sand, tufa stone, and cuttlebone as well as charcoal and plaster as these materials are generally easy to shape (unlike iron or steel), do not break down when suddenly exposed to high temperatures (unlike glass, wood, or plastic), do not deform easily (unlike silicone) and are widely available.

References

Casting (manufacturing)
Prometheus (rocket engine). The Prometheus rocket engine is an ongoing European Space Agency (ESA) development effort begun in 2017 to create a reusable methane-fueled rocket engine for use on the Themis reusable rocket demonstrator and Ariane Next, the successor to Ariane 6, and possibly a version of Ariane 6 itself.

Prometheus is a backronym from the original French project designation PROMETHEE, standing for "Precursor Reusable Oxygen Methane cost Effective propulsion System", and for the Titan Prometheus, from Greek mythology, creator of humanity, and god of fire, known for giving fire to humanity in defiance of the gods.

By 2020, the program was funded and is under development by ArianeGroup.

The engine is aimed to be reusable with substantially lower costs than traditional engines manufactured in Europe.  The cost goal is to manufacture the Prometheus engine at one-tenth the cost of the Ariane 5's first-stage engine.

General characteristics 
The engine is planned to have the following features:
 Methane–oxygen propellant.
 Extensive use of metal 3D printing (up to 50% of the engine).
 Open gas-generator cycle.
 980 kN of thrust (~100 tonnes), variable from 30% to 110% thrust.
  chamber pressure.
 360 s specific impulse (I).
 Reusable 3 to 5 times.
 Around 1 million euros production cost.

History  
The European Space Agency (ESA) began funding Prometheus engine development in June 2017 with  provided through the Future Launchers Preparatory Programme, 63% of which came from France.

By June 2017, Patrick Bonguet, lead of the Ariane 6 launch vehicle program at Arianespace, indicated that it was possible the Prometheus engine could find a use on a future version of the expendable Ariane 6 launcher. In this scenario, a "streamlined version of Vulcain rocket engine called Vulcain 2.1 would have the same performance as Vulcain 2". The expendable Ariane 6 was then expected to make an initial launch in 2020.

By June 2020, the ESA was on board with this plan and had agreed to completely fund the development of the Prometheus precursor engine to bring the "engine design to a technical maturity suitable for industry". The objective of the overall program as stated in June 2020 was to utilize Prometheus technology to eventually "lower the cost of production by a factor of ten of the current main stage Ariane 5 Vulcain 2 engine".

In 2021, ESA invested an additional €135 million in the project, including €30 million from DLR.

A Prometheus engine was started up in Nov 2022.

The engine had a successful 12 second test firing in June 2023, at the THEMIS test stand in Vernon, France.

An additional successful hot fire test was reported at the end of 2024.

See also

References

External links 
ESA Prometheus website

Rocket engines using methane propellant
Space programs
European space programmes
Spaceflight technology
Polytechnic ATMI Surakarta. Polytechnic ATMI Surakarta, formerly called Academy of Industrial Machine Engineering, Indonesia, is a mechanical engineering academy established in 1968 with support from the Karya Bakti Foundation of the Indonesian Jesuits. It has developed into a higher education institution with a considerable influence on professional education, especially in the mechanical engineering industry (manufacturing engineering). It is owned and managed by the Society of Jesus.

Program 
ATMI Polytechnic Surakarta is an institution of higher education which concentrates on vocational education in manufacturing in Indonesia, having adopted a dual system education model from Germany and Switzerland. The school was first established in 1968 under the name of ATMI (Akademi Tekniknik Mesin Industri) and has always been dedicated to Production Based Education and Training (PBET).

ATMI Polytechnic first received university level ISO quality certification in the education and production field. The ISO 9001: 2000 quality assurance has been obtained since September 21, 2001, and its implementation is audited annually. The standard update to ISO 9001: 2008 was implemented on May 18, 2010.

ATMI Surakarta has 3 study programs, namely: Industrial Machinery Engineering, and Mechatronics Engineering, Mechanical and Machine Design Technique.

See also
 List of Jesuit sites

References 

Universities and colleges in Indonesia
Educational institutions established in 1968
Jesuit universities and colleges in Indonesia
Softseating. Softseating fanning stool + bench is a furnishing made from paper or textile, designed by Stephanie Forsythe and Todd MacAllen of molo in 2003 and released in 2006. Internal honeycomb geometry allows the elements to store compressed, and then fan open to form seats and tables. Examples of softseating are held in the Museum of Modern Art, the Art Institute of Chicago and the Cooper Hewitt, Smithsonian Design Museum.

Design
The paper or textile materials take on flexibility and strength through an ordered, honeycomb geometry. Depending on the number of layers, the honeycomb creates stools and benches of various sizes. When folded, the furniture can be stored like a book. Magnetic panels set into the final layers of each element allow softseating to connect to itself or to link with other elements to form long benches or creative seating arrangements. Stephanie Forsythe and Todd MacAllen developed the design after considering methods of maximizing small urban spaces for living and working, and how to transform such spaces to suit many types of use.

References

External links
molo's official website

Furniture
Sustainable products
Paper products
Gayla Industries. Gayla Industries, Inc. was founded in 1961 primarily as a manufacturer of plastic keel-guided delta-wing kites that require no tails, as well as latex balloons. Their kites are sold worldwide in toy and hobby stores. The company owns several patents on their tail-less keel-guided kite designs.

Products 
The company's product line, while remaining primarily plastic kites, has expanded to include rip-stop nylon kites, balloon-based exercise products, flying toys, and wind socks.

References

External links 
 Company website

Companies based in Houston
Titanium bis(acetylacetonate)dichloride. Titanium bis(acetylacetonate)dichloride is the coordination complex with the formula Ti(C5H7O2)2Cl2.  It is a common acetylacetonate complex of titanium.  It is a red-orange solid that hydrolyzes slowly in air.

The complex is prepared by treatment of titanium tetrachloride with excess acetylacetone:
TiCl4 + 2 Hacac → Ti(acac)2Cl2 + 2 HCl

It is an octahedral complex that crystallizes as a racemic mixture of the chiral cis isomers. It is fluxional in solution, as the result of rapid cis–trans equilibrium.

References

Titanium compounds
Acetylacetonate complexes
11th Flight Training Wing (JASDF). The  is a wing of the Japan Air Self-Defense Force. It is also sometimes known as the 11th Flying Training Wing. It comes under the authority of Air Training Command. It is based at Shizuhama Air Base in Shizuoka Prefecture.

It has two squadrons, both equipped with Fuji T-7 aircraft:
 1st Flight Training Squadron
 2nd Flight Training Squadron

References

Units of the Japan Air Self-Defense Force
13th Flight Training Wing (JASDF). The ) also sometimes known as the 13th Flight Training Wing is a wing of the Japan Air Self-Defense Force. It comes under the authority of Air Training Command and is based at Ashiya Air Base in Fukuoka Prefecture.

It has two squadrons, both equipped with Kawasaki T-4 aircraft:
 1st Flight Training Squadron
 2nd Flight Training Squadron

References

Units of the Japan Air Self-Defense Force