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The Model V was among the early [2] electromechanical [3] general purpose computers, [4] [5] [6] designed by George Stibitz and built by Bell Telephone Laboratories, operational in 1946. Only two machines were built: first one was installed at National Advisory Committee for Aeronautics (NACA, later NASA), the second (1947) at the US Army’s ...
The Red Army adopted the V-2 engine in the same year in three modifications: the V-2 (500 hp (370 kW)), the V-2K (600 hp (450 kW)) for the KV line of tanks and the V-2V (375 hp (280 kW)). [ 1 ] Near the end of the 20th century, the V-2 was fitted with more modern modifications by the chief designer of the head design bureau for the Chelyabinsk ...
Vehicles specifically designed or adapted for the Signal Corps were initially designated by a "K" number. The K-number was later phased out along with the Signal Corps Radio nomenclature system, and was replaced by a "V" number under the Joint Electronics Type Designation System (JETDS).
The V-model is a graphical representation of a systems development lifecycle.It is used to produce rigorous development lifecycle models and project management models. The V-model falls into three broad categories, the German V-Modell, a general testing model, and the US government standard.
A modified variant of the V, the F, was the first aircraft to fly with the new Liberty L-12 engine that would find widespread use in the latter part of World War One.The model F in turn led to the "Reconnaissance", an intended production variant of the F, which in turn evolved into the LWF model G, although none of these would see large scale production.
The active valve control system (AVCS) is an automobile variable valve timing technology used by Subaru.It varies the timing of the valves by using hydraulic oil pressure to rotate the camshaft, known as "phasing", [1] in order to provide optimal valve timing for engine load conditions.
In 1956 the Superior Aircraft Company bought the assets of Culver and put the Model V back into production as the Superior Satellite. The main difference was the use of a 95 hp Continental engine which increased the cruise speed to 130 mph (209 km/h). Only a prototype and five production aircraft were built.
For twin-cam or DOHC engines, VCT was used on either the intake or exhaust camshaft. (Engines that have VCT on both camshafts are now designated as Ti-VCT.↓) The use of variable camshaft timing on the exhaust camshaft is for improved emissions, and vehicles with VCT on the exhaust camshaft do not require exhaust gas recirculation (EGR) as retarding the exhaust cam timing achieves the same ...