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R-1234ze(E)
R-1234ze(E), also written HFO-1234ze(E), is a low-global-warming-potential hydrofluoroolefin refrigerant and blowing agent developed to replace R-134a in chillers, heat pumps, foam insulation, and inhaler propellants.
R-2 (Р-2) (missile)
The R-2 (Р-2), also known as SS-2 Sibling, was a Soviet ballistic missile developed under Sergei Korolev at NII-88, adopted in 1951 with a range of 600 kilometers.
R-27 (air-to-air missile)
The Vympel R-27 (NATO: AA-10 Alamo) is a family of Soviet medium-to-long-range air-to-air missiles developed for the MiG-29 and Su-27, with modular radar and infrared seekers.
R-32 (refrigerant)
R-32 is the refrigerant designation for difluoromethane, a single-component hydrofluorocarbon with a global warming potential of 675, used mainly in air conditioners and heat pumps since Daikin introduced the first residential unit in 2012.
R-36
The R-36 (8K67, NATO reporting name SS-9 Scarp) was a Soviet second-generation intercontinental ballistic missile developed by Mikhail Yangel's bureau in Dnepropetrovsk, becoming the basis for the R-36M and the Tsiklon and Dnepr launch vehicles.
R-36 (Р-36) (missile)
The R-36 (Р-36), known to NATO as the SS-18 "Satan", is a family of Soviet and Russian heavy intercontinental ballistic missiles developed at the Yuzhnoye Design Bureau in Ukraine.
R-360 Neptune (Р-360 «Нептун»)
The R-360 Neptune (Р-360 «Нептун») is a Ukrainian subsonic anti-ship cruise missile developed by the Luch design bureau from the Kh-35 and adopted in 2020.
R-36M
The R-36M, known to NATO as the SS-18 "Satan", is a Soviet-designed, silo-based, liquid-propellant heavy intercontinental ballistic missile developed at Dnepropetrovsk, Ukraine, deployed from 1975 and capable of carrying ten MIRVs.
R-37 (missile)
The R-37 (NATO AA-13 Axehead), developed by Vympel, is a Russian very-long-range air-to-air missile for attacking AWACS aircraft, tankers, and bombers from outside escort range; its R-37M variant serves mainly on MiG-31 interceptors.
R-410A
R-410A, also known as Puron, is a hydrofluorocarbon refrigerant blend used in residential and commercial air conditioning and heat pumps as the replacement for R-22.
R-7
The R-7 (Семёрка, Semyorka) was the world's first intercontinental ballistic missile, developed in the Soviet Union under Sergei Korolev, first flown in 1957 and later launching Sputnik.
R-7 Semyorka
The R-7 Semyorka, also known as the SS-6 Sapwood, was the world's first intercontinental ballistic missile, developed at Sergei Korolev's OKB-1 and first flown successfully in August 1957.
R-73 (missile)
The R-73 (NATO reporting name AA-11 Archer) is a Soviet-designed short-range, infrared-homing air-to-air missile developed by Vympel, still Russia's standard close-range weapon and the benchmark for thrust-vectoring, helmet-cued missiles.
R-77
The R-77, NATO name AA-12 "Adder" and exported as the RVV-AE, is a Russian medium-range, active radar-guided air-to-air missile developed by Vympel from 1982 in response to the American AIM-120 AMRAAM.
R-CNN
R-CNN, short for Regions with CNN features, is an object detection algorithm introduced in 2013 by Ross Girshick and colleagues at UC Berkeley, applying CNNs to region proposals.
R-S-T system
The R-S-T system, or RST code, is the code amateur radio operators use to report received signal quality, devised by Arthur W. Braaten in 1934 and published in QST.
R-tree
An R-tree is a balanced tree index for multi-dimensional spatial data, proposed by Antonin Guttman in 1984 and built into database systems including PostgreSQL and SQLite.
R. Bruce Thompson
R. Bruce Thompson (1941–2011) was an Iowa State University professor and National Academy of Engineering member who pioneered quantitative ultrasonic nondestructive evaluation, including the Thompson-Gray Measurement Model.
R. Byron Pipes
R. Byron Pipes is an American polymer and composites researcher at Purdue University, known for the 1970 Pipes–Pagano analysis and elected to the National Academy of Engineering in 1987.
R. C. Harris Water Treatment Plant
The R. C. Harris Water Treatment Plant, also known as the R. C. Harris Filtration Plant, is Toronto's largest drinking water plant, opened in 1941 and nicknamed "The Palace of Purification" for its Art Deco architecture.
R. J. Mitchell
R. J. Mitchell, also known as Reginald Joseph Mitchell, was a British aeronautical engineer, chief designer at Supermarine, best known for designing the Spitfire fighter.
R. Joseph Kline
R. Joseph Kline is a materials scientist at NIST in Gaithersburg, Maryland, who developed X-ray metrology methods for 3D nanostructures in the semiconductor industry and received a 2012 PECASE award.
R. Keith Michel
R. Keith Michel is an American naval architect who served as president of Webb Institute from 2013 to 2022 and was elected to the National Academy of Engineering in 2014.
R. Lyndon Arscott
R. Lyndon (Lyn) Arscott is a British petroleum engineer who led health, safety, and environment work at Chevron and the International Association of Oil & Gas Producers.
R. M. Williams (company)
R.M.Williams is an Australian footwear and apparel company founded in 1932 by Reginald Murray Williams, known for elastic-sided boots handcrafted in Adelaide from a single piece of leather.
R. Noel Longuemare
R. Noel Longuemare is an American electrical engineer who spent 41 years developing radar and avionics systems at Westinghouse, then served in the Pentagon under President Bill Clinton.
R. Peter King
R. Peter King (1938–2006) was a South African-born metallurgical engineer and University of Utah professor, elected to the National Academy of Engineering in 2003 for mineral processing simulation.
R. Rhodes Trussell
R. Rhodes Trussell is an American civil and environmental engineer who founded Trussell Technologies, chaired the 2012 NRC Water Reuse study, and won the 2013 Clarke Prize.
R. Richard Heppe
R. Richard (Dick) Heppe (1923–2015) was an American aerospace engineer who spent 41 years at Lockheed, rising to president of the Lockheed-California Company and working on the F-104, L-1011, F-117, and F-22A.
R. Shankar Nair
R. Shankar Nair is a Chicago-based structural and civil engineer elected to the National Academy of Engineering in 2005 for his design of innovative bridges and building structures.