omniomni/omni-engineering huggingface dataset:
HAL HTSE-1200. The HAL HTSE-1200 ("Hindustan Turbo Shaft Engine") is a turboshaft engine under development by India's Hindustan Aeronautics Limited (HAL). It is aimed at 3.5 ton single engine class and 5-8 ton twin engine class helicopter configurations. India will need 5,000-6,000 helicopters to operate in 2020s. This will be an indigenous design giving engine alternatives for the HAL-developed LUH, ALH and LCH. The first run of engine was conducted in February 2018 when it achieved 76% of the rpm required.

There have been 250 tests of engine since inaugural run. The engine has been "progressing well" to have its first flight test by end of 2019. Directionally 
Solidified Gas Generator (GG) Turbine blades were also developed for the engine indigenously.

In the Annual Report 2020-21 of Hindustan Aeronautics Limited, it is revealed that HTSE 1200 achieved 100% speed run on core engine. Sea level trials of core engine completed successfully. HAL Engine Division at Koraput in association with Defence Metallurgical Research Laboratory (DMRL) has developed Single Crystal Blade samples. HAL has also completed the manufacturing of parts and modular assemblies for Power mode engine. HAL is set to start limited series production of engine from 2021 end, which will be for 5 units for further testing. HAL has completed High altitude cold weather trials of Jet Mode Engine at Leh and High altitude hot weather trials of Jet Mode Engine at Leh, South Pullu and Khardung-La. Run of Power mode engine to 80% of the speed achieved.

As of 13 September 2024, fabrication of 5 prototype engines is underway and delivery is scheduled to start in mid-2025. The core has achieved 100% RPM milestone and completed sea-level trials while limited series production is to start soon. There are plans to integrate the engines with HAL Dhruv prototypes for in-flight evaluation.

Specifications (HTSE-1200)

See also

References 

2010s turboshaft engines
Longping High-Tech Park. Longping High-Tech Park () is a High tech industrial park at state level in Furong District of Changsha City, Hunan Province, China, one of four industrial parks of Changsha High-Tech Industrial Development Zone. The industrial park is the original Mapoling Agricultural High-Tech Park (), which was one of two high-tech agricultural parks approved by the former State Science and Technology Commission in 1997, it was Changed to Longping Agricultural High-Tech Park () in October, 2000 and to the present name in November 2003. It is named after the agronomist and hybrid rice expert Yuan Longping.

Longping High-Tech Park has an area of . In 2015, the total industrial output value of the park is CNY 40.5 billion (US$6.5 billion), the total service and business income of enterprises is CNY 55 billion (US$8.83 billion). as of November 2016, there are 728 enterprises, 493 of that are service-oriented enterprises.

References 

Furong District
Economy of Changsha
1999 establishments in China
Jingmen A2C Ultra Seaplane. The Jingmen A2C Ultra Seaplane is a Chinese three-seat ultralight aircraft that was designed by the China Avionics Research Institute (the 605 Institute) and produced by Jingmen Aviation of Jingmen, introduced in 2003.

Design and development
The A2C was designed to comply with the Civil Aviation Authority of China rules. It was given a Chinese type authority on 18 July 2003 and a production certificate in 2004. It was designed for the agricultural aircraft, aerial photography, search and rescue, communications and sport roles.

The design features a strut-braced high-wing, a three-seat open cockpit with a windshield, fixed tricycle landing gear or floats and a single engine in pusher configuration.

The aircraft is made from bolted-together aluminum tubing, with its flying surfaces covered in Dacron sailcloth. Its  has an area of . The standard engine used is the certified  Rotax 912A2 four-stroke powerplant.

Almost 100 had been delivered by 2016.

Operational history
Reviewer Marino Boric described the design in a 2015 review as having a "big load capacity, economy, safe and reliable".

Variants
A2C
Seaplane model
A2C-L
Landplane model with tricycle landing gear.

Specifications (A2C)

References

External links
Photo of an A2C

A2C
2000s Chinese ultralight aircraft
Single-engined pusher aircraft
Junkers J 5. The Junkers J 5 was a designation assigned to several fighter aircraft designs.

Variants 
In early 1917, Junkers developed at least two cantilever wing monoplane fighter aircraft designs based on the J4.

J 5I 
The first design, known as the J 5I, was to have a Siemens Sh2 or Oberursel UR.II engine behind the cockpit.

J 5II 
The second design was to have the engine in front of the pilot.

J 5III (J 6) 
A third design was also developed under the designation J 5III (later J 6) with a Mercedes D.IIIa and a parasol wing.

Links 
 Junkers J5 (Hugo Junkers Homepage)

References

Bibliography
 

J 005
Cancelled aircraft projects
Reza Abbaschian. Reza Abbaschian is an Iranian/American engineer, currently the William R. Johnson, Jr. Family Professor, Distinguished Professor of Mechanical Engineering and the former Dean of the Bourns College of Engineering and, also formerly the Vladimir Grodsky Professor of Materials Science at University of Florida. In 2006, he was elected to the American Association for the Advancement of Science, The Minerals, Metals and Materials Society and ASM, the latter of which he was a former president.

Abbaschian is considered pivotal in establishing a relationship with Winston Chung, which led to a $10 million donation to the college.

Abbascian was recognized with the 2017 AIME Honorary Membership Award for "pioneering contributions in solidification processing, materials education and leadership in materials science and engineering worldwide".

Education
Ph.D. in Materials Science and Engineering from the University of California, Berkeley
M.S. in metallurgical engineering from Michigan Technological University
BSc in mining and metallurgy from Tehran University

References

Year of birth missing (living people)
Living people
Fellows of the American Association for the Advancement of Science
University of California, Riverside faculty
University of Florida faculty
American mechanical engineers
UC Berkeley College of Engineering alumni
Michigan Technological University alumni
University of Tehran alumni
Engineers from California
Fellows of the Minerals, Metals & Materials Society
21st-century American engineers
21st-century Iranian engineers
Western Flyer (disambiguation). Western Flyer may mean:
Western Flyer, an American country group
Western Flyer (Australian group), an Australian group from the 1970s
Western Flyer (bicycle), an American bicycle sold by Western Auto
Western Flyer (boat), an American boat chartered by John Steinbeck
RV Western Flyer, a research vessel operated by the Monterey Bay Aquarium Research Institute
New Flyer Industries, a Canadian bus manufacturer formerly known as Western Flyer Coach
RRS Discovery (disambiguation). RRS Discovery is a wooden three-masted British ship launched in 1901, and is most associated with the Discovery Expedition to the Antarctic led by Robert Falcon Scott and Ernest Shackleton.

RRS Discovery may also refer to:
 RRS Discovery II, a British Royal Research Ship completed in 1929
 RRS Discovery (1962), a British Royal Research Ship launched in 1962
 RRS Discovery (2013), a Royal Research Ship completed in 2013
Joke Bouwstra. Johanna Aaltje "Joke" Bouwstra (born 2 December 1956) is a Dutch researcher and professor of drug administration at Leiden University. Bouwstra has worked at the Leiden Academic Centre for Drug Research, where she has been section leader of Drug Delivery Technology.

Career
Bouwstra was born on 2 December 1956 in Hardenberg. She obtained her PhD at Utrecht University in 1985, with a thesis titled: "Thermodynamic and structural investigations of binary systems". Since 1985 Bouwstra has been involved with the predecessor institutes of the Leiden Academic Centre for Drug Research. In 2004 she became a professor of Drug administration at Leiden University. As of 2013, Bouwstra has worked at the Leiden Academic Centre for Drug Research, where she has been section leader of Drug Delivery Technology.

In 2005  named Bouwstra the Simon Stevin Master 2005. In 2011 she won the CHANEL-CERIES Research Award. Bouwstra was elected a member of the Royal Netherlands Academy of Arts and Sciences in 2013.

Bouwstra's research has focused on the administration of drugs through the human skin and the barrier role the skin has.

References

1956 births
Living people
Academic staff of Leiden University
Members of the Royal Netherlands Academy of Arts and Sciences
People from Hardenberg
Utrecht University alumni
Allan Acosta. Allan James Acosta (August 10, 1924 – May 18, 2020) was an American engineer, and a Richard L. and Dorothy M. Hayman Professor of Mechanical Engineering, Emeritus at California Institute of Technology. He was elected to the American Association for the Advancement of Science and National Academy of Engineering.

References

1924 births
2020 deaths
California Institute of Technology faculty
American mechanical engineers
Multiplicative binary search. In computer science, multiplicative binary search is a variation
of binary search that uses a specific permutation of keys in an array instead of the sorted order used by regular binary
search.
Multiplicative binary search was first described by Thomas Standish in 1980.
This algorithm was originally proposed to simplify the midpoint index calculation on small computers without efficient division or shift operations.
On modern hardware, the cache-friendly nature of multiplicative binary search makes it suitable for out-of-core search on block-oriented storage as an alternative to B-trees and B+ trees.  For optimal performance, the branching factor of a B-tree or B+-tree must match the block size of the file system that it is stored on.  The permutation used by multiplicative binary search places the optimal number of keys in the first (root) block, regardless of block size.

Multiplicative binary search is used by some optimizing compilers to implement switch statements.

Algorithm 
Multiplicative binary search operates on a permuted sorted array.  Keys are stored in the array in a level-order sequence of the corresponding balanced binary search tree.
This places the first pivot of a binary search as the first element in the array.  The second pivots are placed at the next two positions.

Given an array A of n elements with values A0 ... An−1, and target value T, the following subroutine uses a multiplicative binary search to find the index of T in A.
 Set i to 0
 if i ≥ n, the search terminates unsuccessfully.
 if Ai = T, the search is done; return i.
 if Ai < T, set i to 2×i + 1 and go to step 2.
 if Ai > T, set i to 2×i + 2 and go to step 2.

See also

Citations 

Search algorithms
Misawa Aviation & Science Museum. is an aerospace museum in the city of Misawa, Aomori Prefecture, Japan. The museum was opened on August 8, 2003, and is located adjacent to Misawa Airport.

History 
The museum received an F-16 in 2005.

The prototype HondaJet was placed on display at the museum in April 2021.

Museum building
The highlight of the display on the ground floor of the museum is a  NAMC YS-11 formerly operated by Japan Air Commuter.

Other displays concentrate on the history of aviation, including a full-scale model of the Wright Flyer and of the Miss Veedol, the first aircraft to make a successful nonstop transpacific flight, which originated from Misawa's Sabishiro Beach in 1931.  Other full-scale models include that of a Mitsubishi A6M Zero, Tachikawa Ki-54 and the Gasuden Koken, as well as a McDonnell Douglas DC-9 cockpit.

The second floor of the museum has flight simulators and displays on aerospace engineering and the third floor is an observation deck with a view of the runways of Misawa Air Base.

Aircraft on display
NAMC YS-11A-227, registration JA8776
Westland WS-51 Dragonfly, registration JA7014
General Dynamics F-16A, serial 78-0021
McDonnell Douglas F-4EJ-kai, serial 57-8375
Fuji T-3, serial 91-5516
Lockheed T-33, serial 81-5344
Lockheed F-104J  serial 76-8699
Lockheed UP-3A, serial 150526
Mitsubishi F-1, serial 00-8247
Mitsubishi T-2 (in Blue Impulse livery), serial 59-5108
Mitsubishi T-2, serial 29-5177
Mitsubishi LR-1, serial 2209
Kawasaki/Hughes OH-6D, serial 30270
Pitts Special S-1C, registration N122EZ

See also
List of aviation museums

References

External links

Aomori Sightseeing Guide

Museums in Aomori Prefecture
Aerospace museums in Japan
Prefectural museums
Science museums in Japan
Museums established in 2002
2002 establishments in Japan
Misawa, Aomori
Renault Trezor. The Renault Trezor is a two-seater electric concept car with autonomous capabilities built by Renault which was unveiled at the 2016 Paris Motor Show. The car secured the Festival Automobile International's Most Beautiful Concept car of the Year 2016 award. The car was expected to become a commercial product by 2020.

Exterior

The car's lack of visible seams is largely due to the use of its clamshell style roof which opens up to allow passengers to enter the interior. The single piece canopy opens by hinging forward on struts. The car also uses a carbon-fiber chassis and a wooden frame under the bonnet, which was built with German bicycle manufacturer Keim, to function as a luggage rack. It had to carry on the legacy of the DeZir, extreme beauty and economy while sacrificing top speed.
The car has a drag coefficient of 0.22 which makes it one of the most aerodynamically efficient cars in the world. The exterior lighting signature of the car changes when switched to autonomous mode. The car rides on 21 inch front and 22 inch rear wheels with gaps between spokes in the shape of the Eiffel Tower, besides carbon-fiber scoops to aid in brake cooling.

Interior
The car has an electric motor developing  and  torque, allowing the car to accelerate from 0 to 100 km/h (62 mph) in less than four seconds. The car has two battery packs with independent cooling systems optimized by variable geometry honeycomb shaped air intakes in front. The car has a brake operated energy recovery system, developed from the Rechargeable Energy Storage System (RESS) technology developed for Formula E cars.

The interior and the windshield of the car are colored red. The car also has an OLED touchscreen covered with Gorilla Glass on both the center console and steering wheel. The steering wheel is rectangular and can extend in width when the vehicle is in autonomous mode to give the driver a panoramic view of the dashboard.

References

External links 

Trezor
Coupés
Electric concept cars
Cars introduced in 2016
China Railways JF4. The China Railways JF4 (解放4, Jiěfàng, "liberation") class steam locomotive was a class of superheated 2-8-2 steam locomotives for goods trains operated by the China Railway. They were originally built for the South Manchuria Railway (Mantetsu) in Japan in 1935.

History
After a number of incidents involving broken crankshafts in the Mikani class locomotives, as well as needing more motive power to meet the increase in goods traffic following the establishment of Manchukuo, the Mikashi class was designed in 1933 and put into production in 1935, with fifteen built in Japan that year, four by Kisha Seizō and eleven by Kawasaki. 

As the three-cylinder design of the Mikani class was deemed too complex, the Mikashi class returned to the proven two-cylinder layout. In order to achieve a tractive effort equal to or greater than that of the three-cylinder locomotives with a two-cylinder engine, it is necessary to increase the adhesive weight of the locomotive; however, this would make the axle load unacceptably high - between  and . To overcome this, a limited cutoff system was adopted with a maximum cutoff of 50%; by balancing the rotational forces of the left and right cylinders, the axle load was successfully limited to .

Boiler pressure was increased from , whilst other new features included a Schmidt type E superheater, a feedwater heater and a combustion chamber firebox. Fuel consumption was also improved, with the Mikashi class using from 10% to up to 22.6% less coal than the Mikani class. The wheel diameter was also increased from  in order to increase the speed of goods trains, however as this could result in wheel slippage on steeper sections due to the reduction in piston speed, so the timetables of goods trains were adjusted accordingly. Used primarily on heavy goods trains between Fengtian and Dalian to transport coal from the Fushun Coal Mine to port, they could pull up to sixty  coal hoppers.

Postwar
At the end of the Pacific War, the 15 Mikashi class locomotives were divided between the Dalian (13) and the Fengtian (2) depots, and all were taken over by the Republic of China Railway. Following the establishment of the People's Republic and the subsequent creation of the current China Railway, they became class ㄇㄎ肆 (MK4) in 1951, and class 解放4 (JF4, jiěfàng, "liberation") in 1959 and numbered 2701–2715. As during the Mantetsu times, they were primarily used around Dalian and Shenyang (formerly Fengtian).

References

2-8-2 locomotives
Kawasaki locomotives
Kisha Seizo locomotives
Railway locomotives introduced in 1935
Steam locomotives of China
Standard gauge locomotives of China
Rolling stock of Manchukuo
Freight locomotives
Electric Loco Shed, Kalyan. Electric Loco Shed, Kalyan is an electric engine shed located in Kalyan in the Indian state of Maharashtra. Located north-east of Kalyan Junction railway station, it falls under the Mumbai CR railway division.

The Loco Shed will be remodeled into Platforms. Kalyan will have 13 Platforms after the remodeling, says Reports.

History 

Electric Loco Shed Kalyan has the distinction of being the prime mover of Mumbai Division of central railway for the last 93 years. The shed was established on 28 November 1928 under Great Indian Peninsula Railway & is the first Electric Loco Shed in India. Kalyan Loco Shed is the only shed in India to hold widest variety of locos. Currently shed handles 225 locos includes 50 Nos. of WCAM-3, 20 Nos. of WCAM-2, 12 Nos. of WCAG-1, 55 Nos. of WAG-7, 2 Nos. of WCM-6, 69 Nos. of WAG-9, 78 Nos. of WAP-7 respectively. It formerly held the WCG-2 DC electric locomotives.

Activities 
Apart from regular Preventive Maintenance Schedule i.e. IA, IB, IC, TOH & IOH, Kalyan Loco Shed is also carrying out the following activities.

 Maintenance & operation of Accident Relief Train
 Maintenance & operation of Self Propelled ART
 Re-discing of wheel sets.

Milestones

Locomotives

External links 
 
 Central Railway - Official Website

References

Kalyan
Rail transport in Maharashtra
Transport in Kalyan-Dombivli
1928 establishments in India
Samuel R. Allen. Samuel R. Allen (born c. 1953) is an American businessman. He was the chairman and chief executive officer of John Deere, and the chairman of the U.S. Council on Competitiveness.

Early life
Samuel R. Allen was born circa 1953 in Sumter, South Carolina. He attended Purdue University as an Evans Scholar and graduated with a Bachelor of Science in Industrial Management in 1975.

Career
Allen started his career at John Deere in 1975, where he first worked as an industrial engineer. He became the company's president and chief operating officer in June 2009. Allen was the chairman and chief executive officer of Deere & Company from February 2010 to November 2019. In 2016, he earned more than US$18 million.

As of 2017, Allen serves as the chairman of the U.S. Council on Competitiveness. He has served on the board of directors of Whirlpool Corporation since June 2010.

In March 2020, Allen announced his retirement as board chairman of Deere & Company.

References

Living people
1950s births
People from Sumter, South Carolina
Krannert School of Management alumni
Businesspeople from South Carolina
American chief executives
American chairpersons of corporations
Whirlpool Corporation people
Directors of Dow Inc.
Robert Sharpe (railway contractor). Robert Sharpe (1804-1868) was a contractor on railway projects in England, Wales and Brazil. He was also a noted farmer and stockbreeder on his estate, Hewelsfield Court, in Gloucestershire.

He was born in Grindon, County Durham, England in 1804.  He and his brothers John and Paul were later engaged in various railway works in England and Wales including Whiteball Tunnell on the Bristol and Exeter Railway, the South Devon Railway and the South Wales Railway.  Robert Sharpe also completed works for Gloucester and Deane Forest Railway, Cornwall Railway and the Great Western Railway.

In 1851, Robert had a steam powered flour and grist mill built in Chepstow, between the gas works and the railway embankment.  He ran the mill in partnership with Mr. James Ireland, a cornfactor and miller from Bristol, under the name The Chepstow Steam Mill Company.  The firm was successful for a number of years, but was sold in 1863 after running into difficulties.

On 8 February 1860, Robert Sharpe & Sons (a partnership between Robert and his two sons Paul Wallace and William John) signed a contract with the San Paulo Railway Company, to build a line between Santos and Jundiahy, via São Paulo, for the agreed sum of £1,745,000.  On 1 October 1866 the railway was completed, handed over to and accepted by the company.

Robert Sharpe died on 25 July 1868 at Addlestone, Chertsey, Surrey, aged sixty four.  He was buried at St. Margarets, West Hoathly.

Chancery Court of Appeal: Sharpe v. San Paulo Railway

In 1871 Paul Wallace Sharpe and William John Sharpe attempted to sue San Paulo Railway to recover additional costs of £617,143 which they had incurred when the company's engineer had altered the plans from the original specification.  The case reached the Chancery Court of Appeal in 1872, but was thrown out.  Lord Romilly and Sir W. M. James stated that if the contractors had disapproved of the new arrangements, they ought to have entered into a fresh contract with the company.  It was clear, they said, that the engineer had no power to alter the contract, and that the verbal agreement between him and contractor could not bind the company.  Shortly after this, the company Robert Sharpe & Sons was dissolved.

Bibliography

References

19th-century English businesspeople
1804 births
1868 deaths