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Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.
Leupold & Stevens, Inc. is an American manufacturer of telescopic sights, red dot sights, binoculars, rangefinders, spotting scopes, and eyewear located in Beaverton, Oregon, United States. The company, started in 1907, is on its fifth generation of family ownership.
The Vortex lattice method, (VLM), is a numerical method used in computational fluid dynamics, mainly in the early stages of aircraft design and in aerodynamic education at university level. The VLM models the lifting surfaces, such as a wing , of an aircraft as an infinitely thin sheet of discrete vortices to compute lift and induced drag .
The Velocette Viper is a British motorcycle made by Velocette between 1955 and 1968. Built using traditional methods and materials, it struggled to compete against more modern machines, so from 1960 the designers added new glass fibre enclosure panels, making the Viper one of the first enclosed production motorcycles.
Vortices are points in 2D fields and lines in 3D fields (as they have codimension two). Integrating the phase of the field around a path enclosing a vortex yields an integer multiple of 2 π. This integer is known as the topological charge, or strength, of the vortex. A hypergeometric-Gaussian mode (HyGG) has an optical vortex in its center ...
The Tomark Viper SD4 is a Slovak single–engine, all-metal, two-seat low wing monoplane with a fixed tricycle undercarriage and side-by-side seating for two people. The aircraft is built by Tomark s.r.o. of Prešov .
The Armstrong Siddeley Viper is a British turbojet engine developed and produced by Armstrong Siddeley and then by its successor companies Bristol Siddeley and Rolls-Royce Limited. It entered service in 1953 and remained in use with the Royal Air Force , powering its Dominie T1 navigation training aircraft until January 2011.
Echis carinatus, the saw-scaled viper Snakebites by species in India [ 3 ] According to a 2020 study that did a comprehensive analysis of snake bites in India, Russell's viper accounted for 43% of the snakebites in India, followed by kraits (18%), cobras (12%), hump nose viper (4%), saw-scaled viper (1.7%), and water snake (0.3%).