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Humsafar Express
The Humsafar Express is a class of fully air-conditioned 3-tier sleeper trains operated by Indian Railways, first run in December 2016 between Gorakhpur and Delhi.
Humvee
The Humvee, formally the High Mobility Multipurpose Wheeled Vehicle (HMMWV), is a four-wheel-drive military truck built by AM General that replaced the Jeep lineage from 1985.
Hunan Baoqing power station
Hunan Baoqing power station (国电宝庆发电厂) is a 1,320 MW coal-fired power plant in Yuxi Town, Shaoyang, Hunan, China, with two 660 MW supercritical units commissioned between 2011 and 2012.
Hunan Zhongli New Materials (中锂新材)
Hunan Zhongli New Materials (中锂新材) was a Chinese manufacturer of wet-process lithium-ion battery separators, founded in Changde, Hunan in 2012 and taken over by Sinoma Science & Technology in 2019.
Hundertwasserhaus
Hundertwasserhaus is a municipal apartment building in Vienna's Landstraße district, built from 1983 to 1985 to designs by the painter Friedensreich Hundertwasser with architects Josef Krawina and Peter Pelikan.
Hungarian Academy of Engineering
The Hungarian Academy of Engineering (Magyar Mérnökakadémia) is an independent, non-profit national engineering academy based in Budapest, founded in 1990 to unite Hungary's leading engineers and advise policymakers.
Hungarian algorithm
The Hungarian algorithm, also known as the Kuhn-Munkres or Munkres algorithm, solves the linear sum assignment problem in polynomial time, first published by Harold Kuhn in 1955.
Hungarian notation
Hungarian notation is a variable naming convention in which prefixes describe a variable's type or use, devised by Charles Simonyi and spread by Microsoft's Windows documentation.
Hungarian Parliament Building
The Hungarian Parliament Building, also known as Országház, is the Neo-Gothic seat of the National Assembly of Hungary in Budapest, built 1885 to 1904 to plans by architect Imre Steindl.
Hungarian railway and canal construction
Hungarian railway and canal construction covers railways and waterways in the Kingdom of Hungary, from the first horse-drawn line of 1827 to more than 22,000 km by 1913.
Hungo Oil Field
The Hungo Oil Field is a deepwater oil field in Block 15 off Angola, about 370 kilometers northwest of Luanda, producing since August 2004 through Kizomba A.
Hungry Horse Dam
Hungry Horse Dam is a 564-foot concrete arch dam on the South Fork Flathead River in Montana, built by the Bureau of Reclamation from 1948 to 1953.
Hunslet Engine Company
The Hunslet Engine Company, founded in Leeds in 1864, is a British builder of industrial and narrow gauge locomotives that produced the wartime WD Austerity 0-6-0ST.
Hunt–Crossley model
The Hunt–Crossley model is a nonlinear viscoelastic contact force model for collisions, adding depth-dependent damping to the Hertz law; it was introduced by Hunt and Crossley in 1975 and is used in robotics simulators.
Hunter AFV
The Hunter AFV is a tracked armored fighting vehicle of the Singapore Army, developed by DSTA with ST Engineering; commissioned in 2019, it replaces the Ultra M113.
Hunter Army Airfield
Hunter Army Airfield, also known as Hunter AAF, is a United States Army airfield in Savannah, Georgia, opened as an airport in 1929 and a military field since 1940.
Hunter Marine
Hunter Marine was an American sailboat builder founded by Warren Luhrs in 1972 in Alachua, Florida, which grew into one of the two largest US sailboat builders before its 2012 bankruptcy.
Hunter Power Plant
Hunter Power Plant is a three-unit, coal-fired power station in Emery County, Utah, operated by PacifiCorp, with units entering service in 1978, 1980, and 1983.
Hunter Valley Energy Coal
Hunter Valley Energy Coal is an Australian company wholly owned by BHP that operates the Mt Arthur Coal open-cut mine near Muswellbrook, New South Wales.
Hunter Valley Operations
Hunter Valley Operations (HVO) is a large open-cut coal mining complex near Singleton, New South Wales, jointly owned by Yancoal and Glencore and producing coal for export.
Hunter-killer Group
A hunter-killer group is a naval task group formed to seek out and destroy enemy submarines rather than escort convoys, pairing an escort carrier with antisubmarine surface ships.
Hunterston A nuclear power station
Hunterston A nuclear power station is a decommissioned twin-reactor Magnox station on the Firth of Clyde in Scotland that generated electricity from 1964 to 1990.
Hunting oscillation
Hunting oscillation is the self-excited side-to-side motion of a railway wheelset or bogie, arising from wheel tread conicity and creep forces, growing above a critical speed.
Huntington Ingalls Industries
Huntington Ingalls Industries (HII) is an American defense company headquartered in Newport News, Virginia, and America's largest shipbuilder, formed in 2011 when Northrop Grumman spun off its shipbuilding business.
Huntington Power Plant
The Huntington Power Plant is a coal-fired power plant operated by PacifiCorp in Emery County, Utah, built between 1971 and 1977 with two units totaling 960 MW gross capacity.
Huntsman Corporation
Huntsman Corporation is an American diversified chemical manufacturer headquartered in The Woodlands, Texas, founded by Jon Huntsman in 1970, with about 6,000 employees and 2025 revenues of roughly $6 billion.
Hunyuan (model family)
Hunyuan is Tencent's family of foundation models, first launched in September 2023 as a proprietary enterprise model, now spanning language, reasoning, video, image, 3D, translation, and OCR models, many open-sourced since 2024.
Hunyuan3D
Hunyuan3D is a family of open 3D asset generation models from Tencent, first released in November 2024, that turns text or images into textured 3D meshes.
HunyuanImage
HunyuanImage is a family of open-weights text-to-image models published by Tencent. Its third generation, HunyuanImage 3.0, released September 2025, is an 80-billion-parameter Mixture-of-Experts model with open weights.
HunyuanVideo
HunyuanVideo is a family of open-weights text-to-video and image-to-video generation models published by Tencent, beginning with a 13-billion-parameter diffusion transformer released in December 2024 and followed by the smaller HunyuanVideo-1.5 in November 2025.