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The London and North Eastern Railway (LNER) Class V2 2-6-2 steam locomotives were designed by Sir Nigel Gresley for express mixed traffic work, and built at the LNER shops at Doncaster and Darlington between 1936 and 1944. The best known is the first of the class, 4771 (later 800 and 60800) Green Arrow, which is the sole survivor of the class.
LNER Class V2 4771 Green Arrow.Note Gresley conjugated valve gear located ahead of the piston valves, driven from the valve spindles. The Gresley conjugated valve gear is a valve gear for steam locomotives designed by Sir Nigel Gresley, chief mechanical engineer of the LNER, assisted by Harold Holcroft.
The London and North Eastern Railway (LNER) Class V1 and Class V3 were two classes of related 2-6-2 T steam locomotive designed by Sir Nigel Gresley. [1] A total of 82 V1s were built with 71 being rebuilt into the higher pressure V3s with an additional ten being built as V3s from the final batch of V1s. The V3 was a development of the V1 with ...
A class defines an implementation of an interface, and instantiating the class results in an object that exposes the implementation via the interface. [3] In the terms of type theory, a class is an implementation—a concrete data structure and collection of subroutines—while a type is an interface. Different (concrete) classes ...
This is a new class of drugs that works by blocking the HIV-1 virus’ protein shell known as the capsid. Lenacapavir has a starting dose as oral tablets and subcutaneous injections, followed by ...
The following is a partial list of sailboat types and sailing classes, including keelboats, dinghies, and multihull (catamarans and trimarans). Olympic classes
UL 94, the Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances testing, is a plastics flammability standard released by Underwriters Laboratories of the United States. [1] The standard determines the material's tendency to either extinguish or spread the flame once the specimen has been ignited.
Operators: Belgian Navy: 5 of 10 delivered from 1985 remain in service as the Aster class (3 sold to France, 1 to Bulgaria, 1 to Pakistan) Bulgarian Navy: 1 in service. French Navy: 13 in service as the Eridan class. Indonesian Navy: 2 in service as the Pulau Rengat class. Latvian Naval Forces: 5 in service.