61,984 articles
Prairie Trails (auto trail)
The Prairie Trails was an auto trail of the 1910s and 1920s promoting a marked route from Chicago, Illinois to Kansas City, Missouri before numbered highways replaced them.
Prakash C. Kapur
Prakash C. Kapur, born 1935 in Lahore, is an Indian mineral processing scientist who taught at IIT Kanpur and is a US National Academy of Engineering Foreign Associate.
Prakash Industries
Prakash Industries Limited is an Indian integrated steel and power company, incorporated in 1980, whose main asset is a steel plant at Champa, Chhattisgarh, with captive iron ore and coal mines.
Prambanan
Prambanan, also called Candi Loro Jonggrang, is a ninth-century Hindu temple complex on Java, Indonesia, and the largest temple compound dedicated to Shiva in the country.
Pramod K. Varshney
Pramod K. Varshney, born 1952, is an Indian-born American electrical engineer, Distinguished Professor at Syracuse University, best known for pioneering distributed detection and data fusion theory.
Pramod Reddy
Pramod Sangi Reddy is a professor of mechanical engineering at the University of Michigan known for measuring radiative heat transfer between surfaces separated by nanometer gaps.
Pranav Anand
Pranav Anand is a linguist and Professor of Linguistics at the University of California, Santa Cruz, known for stance classification in online debate, the POLITICAL-ADS corpus, and formal semantics.
Pranav Mistry (પ્રણવ મિસ્ત્રી)
Pranav Mistry (પ્રણવ મિસ્ત્રી) is an Indian computer scientist and inventor, born in 1981, best known for creating the SixthSense wearable gestural interface at MIT.
Prandtl-Tomlinson model
The Prandtl-Tomlinson model is a mechanical model of atomic-scale friction in which a point mass is dragged over a sinusoidal potential by a spring, reproducing stick-slip motion.
Prasanth Nair
Prasanth Balakrishnan Nair, born 1976 in Kerala, is an Indian Air Force commodore and test pilot selected as one of four astronauts for India's Gaganyaan crewed space mission.
Praseodymium-doped fiber amplifier
A praseodymium-doped fiber amplifier (PDFA) is an optical fiber amplifier that uses praseodymium ions in fluoride glass to amplify O-band telecom signals near 1300 nm without conversion to electrical form.
Pratham
Pratham, a 10.7 kg microsatellite built by IIT Bombay students with ISRO guidance, launched on 26 September 2016 to measure total electron content of the ionosphere over India and Paris.
Pratt & Whitney
Pratt & Whitney, also known as Pratt and Whitney, is an American aircraft engine maker founded in 1925, known for the R-2800 piston engine and the Geared Turbofan.
Pratt & Whitney Canada
Pratt & Whitney Canada (P&WC) is a Canadian aircraft engine manufacturer in Longueuil, Quebec, founded in 1928 as a subsidiary of RTX and known for the PT6 engine.
Pratt & Whitney Canada PT6
The Pratt & Whitney Canada PT6 is a turboprop and turboshaft engine family produced since 1963, with over 64,000 delivered and 500 million flight hours across 155 aircraft types.
Pratt & Whitney Canada PW100
The Pratt & Whitney Canada PW100 is a family of turboprop engines, in service since 1984, that powers regional airliners like the Dash 8 and ATR 72.
Pratt & Whitney Canada PW300
The Pratt & Whitney Canada PW300 is a family of two-shaft turbofan engines in the 4,700 to 8,000-pound thrust class for business and regional jets, entering service in 1992.
Pratt & Whitney Canada PW500
The Pratt & Whitney Canada PW500 is a family of turbofan engines for business jets, in service since 1997 and powering the Cessna Citation Excel and Embraer Phenom 300.
Pratt & Whitney F100
The Pratt & Whitney F100, originally designated JTF22, is an afterburning turbofan jet engine that has powered the US Air Force's F-15 since 1974 and also powers the F-16.
Pratt & Whitney F119
The Pratt & Whitney F119 is a twin-spool, afterburning turbofan engine, made by Pratt & Whitney, that powers the US Air Force's F-22 Raptor fighter.
Pratt & Whitney F135
The Pratt & Whitney F135 is an afterburning turbofan engine, developed from the F119 and selected in 2001, that powers all three variants of the Lockheed Martin F-35 Lightning II.
Pratt & Whitney J58
The Pratt & Whitney J58 (company designation JT11D-20) is an afterburning turbojet developed for continuous Mach 3 flight as the powerplant of the Lockheed SR-71 Blackbird.
Pratt & Whitney JT3D
The Pratt & Whitney JT3D is a low-bypass turbofan engine of the late 1950s that powered Boeing 707 and DC-8 airliners and, as the TF33, the B-52H.
Pratt & Whitney JT8D
The Pratt & Whitney JT8D is a low-bypass turbofan that entered service on the Boeing 727 in 1964 and powered over 4,500 aircraft, with more than 14,000 engines built.
Pratt & Whitney PW1000G
The Pratt & Whitney PW1000G, marketed as the GTF, is a geared turbofan engine family that powers the Airbus A320neo, A220, and Embraer E2, entering service in 2016.
Pratt & Whitney PW2000
The Pratt & Whitney PW2000 is a family of high-bypass turbofan engines that entered service on the Boeing 757 in 1984 as the first commercial engine with FADEC.
Pratt & Whitney PW300
The Pratt & Whitney PW300 is a family of two-spool turbofan engines built by Pratt & Whitney Canada for mid-size and heavy business jets, in service since 1991.
Pratt & Whitney PW4000
The Pratt & Whitney PW4000 is a family of high-bypass turbofan engines for large commercial aircraft, powering the Boeing 747, 767, 777, and Airbus A330.
Pratt & Whitney PW800
The Pratt & Whitney PW800 is a family of high-bypass turbofan engines built by Pratt & Whitney Canada, powering the Gulfstream G500, G600, and G400 and the Dassault Falcon 6X.
Pratt & Whitney R-1830 Twin Wasp
The Pratt & Whitney R-1830 Twin Wasp is an American 14-cylinder, two-row radial engine built from 1932 to 1951, more than any other aircraft engine, at 173,618 units.