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German G7a(TI) torpedo at the Norwegian Armed Forces Museum in Oslo. The G7a(TI) was the standard issue Kriegsmarine torpedo introduced to service in 1934. It was a steam-powered design, using a wet heater engine burning decaline, with a range of 7,500 metres (24,600 ft) at 40 knots (74 km/h; 46 mph) speed.
The 1906 Armengaud-Lemale gas turbine could sustain its own air compression but was too inefficient to produce useful work. Although it was unsuccessful as a gas turbine, the combustion chamber design from the 1906 machine was later used successfully in torpedo engines.
The Whitehead torpedo was the first self-propelled or "locomotive" torpedo ever developed. [a] It was perfected in 1866 by British engineer Robert Whitehead from a rough design conceived by Giovanni Luppis of the Austro-Hungarian Navy in Fiume. [7] It was driven by a three-cylinder compressed-air engine invented, designed, and made by Peter ...
The Eghraaq (Urdu: اغراق, "Immersion") is a Pakistani lightweight torpedo developed by Global Industrial Defence Solutions (GIDS). It is the first anti-submarine munition to be locally developed in Pakistan and was first revealed to the public during the IDEAS-2024 Expo at Karachi. [1] [2] [3] [4]
The Mark 2 was what was known as a "cold-running" torpedo. [1] The three-cylinder reciprocating engine ran on cold, compressed air which was stored in the air flask, which had a capacity of 7.154 cubic feet at 1350 pounds per square inch. The after-body carried the engine and the tail, which contained the propellers. [5]
The propulsion system was the critical factor affecting the speed and the range of the torpedo. The Soviet Type 53 steam-powered torpedo was powered by a reciprocating engine and the cylinder of the engine had to sustain tremendous [clarification needed] pressure. The only way to build cylinders that meet the requirement was to use a brand-new ...
To date, commercial or military acceptance of this design is limited to torpedo propulsion systems in current use (2009) by the United States Navy's mk 46 series and mk 48 series engines which use a derivative of the original Gould swashplate engine which was developed in the early 1960s for torpedo propulsion.
The high speed is made possible by supercavitation, whereby a gas bubble surrounding the torpedo is created by outward deflection of water by its specially-shaped nose cone and the expansion of gases from its engine and the gas generator in the nose. This minimizes water contact with the torpedo, significantly reducing drag. [2]