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203 mm howitzer M1931 (B-4) (Russian: 203-мм гаубица обр. 1931 г. (Б-4), GRAU index: 52-G-625) was a 203 mm (8 inch) Soviet high-power heavy howitzer.During the Second World War, it was under the command of the Stavka's strategic reserve.
The first B-3A (S/N 30-281) was converted to Y1B-4 configuration with the addition of R-1860-7 radial engines and low pressure tires. Because of more powerful engines, the performance of the Y1B-4 was a slight improvement on the B-3, but the only difference between the two planes was their engines.
In September 2014 ULA selected BE-4 as the main engine for the Vulcan launch vehicle. Vulcan is a successor to the Atlas V, and BE-4 would replace the Russian-made RD-180 engine. [15] Blue Origin said that the "BE-4 would be 'ready for flight' by 2017". [7] Blue Origin indicated that they intend to make the engine available to companies beyond ...
A painted B-4 bag. HMS B4, a British B-class submarine of the Royal Navy; Keystone B-4, a United States Army Air Corps biplane bomber; SM UB-4, a 1915 German U-boat; 203-mm howitzer M1931 (B-4, "Stalins Hammer"), a World War II Soviet ordnance piece; B-4 a US Air Force/USAAF flight bag; A level of vehicle armour
In 1972 Pilatus bought the manufacturing licence for the B-4 and renamed it the B4-PC11. In the spring of the same year the first production example (numbered HB-1100) made its first flight. A total of 322 B4-PC11s of all versions were built by Pilatus by 1980, when the license to manufacture the craft was sold to Nippi Aircraft of Japan, who ...
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The Be-4 was an elegant, parasol-winged monoplane with a slight inverse-gull wing. The large radial engine was mounted in a nacelle above the fuselage . Testing continued through January 1941, when series production was ordered under the designation Be-4, at a factory near Moscow.
B4-4, later known as Before Four (both stylized in lowercase), was a Canadian boy band from Toronto, Ontario. The band was composed of twins Ryan and Dan Kowarsky , [ 1 ] along with Ohad Einbinder. [ 2 ]