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torpedo
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What is a torpedo?
A torpedo is a self-propelled underwater missile, often shaped like a cigar, that can be launched from various platforms such as submarines, ships, or airplanes. Upon contact or proximity to a target, the torpedo explodes. Modern torpedoes use intricate systems to manage depth and direction, either through preset plans or external signals. They also have a detonator that sets off the explosive warhead when it hits or nears its target.
The modern torpedo was invented by British engineer Robert Whitehead in 1866. These torpedoes can be grouped by their power source, control method, intended target, and launching craft. Propulsion is generally achieved via battery-powered electric motors. Active-acoustic torpedoes use sonar-like signals to home in on targets, while passive-acoustic torpedoes track the noise produced by the target. Submarines used torpedoes to great effect in both World Wars. Japan also used them to conduct night attacks in World War II.
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How does a torpedo work?
A torpedo is a self-propelled underwater missile shaped like a cigar, launched from various platforms such as submarines, ships, or airplanes. Upon contact or proximity to a target, the torpedo explodes. Modern torpedoes use intricate systems to manage depth and direction, either through a pre-set plan or external signals. They also have a mechanism that detonates the explosive warhead when it hits or nears its target.
Propulsion in modern torpedoes typically comes from battery-powered electric motors. Control during underwater travel varies, with active-acoustic torpedoes using sonar-like signals to home in on echoes from the target and passive-acoustic torpedoes targeting noise from the target.
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What types of vehicles can launch torpedoes?
Torpedoes can be launched from various types of vehicles, including submarines, surface vessels, and airplanes. Submarines have been the most successful at using torpedoes, especially during the World Wars. Torpedo-carrying aircraft were introduced in World War II, along with homing torpedoes. Attack submarines are armed with torpedoes and, in some cases, with antiship missiles. Torpedo planes were effective in both World War I and World War II.
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What are the main parts of a torpedo?
A modern torpedo is a self-propelled underwater missile launched from submarines, surface vessels, or airplanes, designed to explode upon contact with the hulls of surface vessels and submarines. It contains devices to control its depth and direction according to a preset plan or in response to signals received from an outside source, as well as a device that detonates the explosive-filled warhead when it strikes its target or comes close to it.
Modern torpedoes can be grouped according to their source of propulsive power, method of control during water travel, type of target, and type of launching craft. Propulsion is usually achieved by battery-powered electric motors. Underwater travel is controlled in several ways, including active-acoustic torpedoes that generate sound signals and home in on the echo received from the target, and passive-acoustic torpedoes that home in on noise generated by the target.
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How are torpedoes guided or controlled?
Modern torpedoes use intricate systems to maintain their course underwater, adjusting depth and direction using preset plans or external signals. These underwater missiles can be guided and controlled in several ways.
- Active-Acoustic Torpedoes These torpedoes generate sound signals, similar to sonar, and navigate toward their target by homing in on the echo reflected from it.
- Passive-Acoustic Torpedoes These torpedoes detect and home in on the noise produced by the target, such as ships or submarines.
- Wire-Guided Torpedoes Course corrections are sent to the torpedo via a wire that unreels behind the missile.
- Inertial Guidance Systems These systems use gyroscopes and accelerometers to monitor the torpedo's position, velocity, and acceleration. A computer processes this information to guide the torpedo along a pre-programmed course.
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How have torpedoes changed naval warfare over time?
The torpedo's evolution has significantly shaped naval warfare. Robert Whitehead's 1866 model, propelled by compressed air, marked the beginning of modern torpedoes. By 1895, the integration of the gyroscope allowed for course correction, enhancing tactical flexibility.
During World War I, torpedoes and big guns heavily influenced warship design. Submarines effectively used torpedoes, demonstrated by German U-boats, and World War II saw the introduction of torpedo-carrying aircraft and acoustic torpedoes. The emergence of the aircraft carrier as a dominant offensive weapon further altered naval strategy. Torpedoes also spurred the development of anti-torpedo boat guns and underwater protection for battleships.
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torpedo, cigar-shaped, self-propelled underwater missile, launched from a submarine, surface vessel, or airplane and designed for exploding upon contact with the hulls of surface vessels and submarines. A modern torpedo contains intricate devices to control its depth and direction according to a preset plan or in response to signals received from an outside source, as well as a device that detonates the explosive-filled warhead when it strikes its target or comes close to it.
Originally the word torpedo referred to any explosive charge, including the type of weapon now known as a mine (q.v.). During the Napoleonic Wars the American inventor Robert Fulton experimented with a naval mine and called it a torpedo, apparently deriving its name from a fish that emits an electric discharge that incapacitates its enemies. During the 19th century some naval vessels used the spar torpedo, which was simply an explosive charge attached to the end of a long pole or spar; it exploded when it touched the hull of an enemy vessel.
The modern torpedo was developed by Robert Whitehead, a British engineer. In 1864 the Austrian Navy asked him to work out an idea for an explosive-carrying, self-propelled boat that could be steered from its launching site by long yoke lines. After building a model of the device, Whitehead rejected the scheme as impracticable and began work on an idea of his own. By 1866 he had a successful torpedo.
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One model of the Whitehead weapon—measuring about 14 feet (4 metres) in length and 14 inches (36 centimetres) in diameter, weighing about 300 pounds (including an 18-pound charge of dynamite in its nose)—was powered by a compressed-air engine driving a single propeller. Depth was controlled by a hydrostatic valve that operated rudders on the horizontal tail surfaces; there was no provision for lateral steering. Its speed was 6 knots (7 miles per hour), and its range was between 200 and 700 yards (180 and 640 m).
In 1895 the gyroscope came into use for directional control. Any deviation from the set course caused the gyroscope to apply corrective movement to the vertical rudders. Further modifications permitted the introduction of a set angle (up to 90°) into the torpedo’s course before the steering rudders took full control. This feature allowed a ship to launch torpedoes without having to face broadside to the target, greatly opening up the field of torpedo tactics.
Modern torpedoes are grouped according to source of propulsive power, method of control during water travel, type of target, and type of launching craft. Propulsion is usually by battery-powered electric motors. Underwater travel is controlled in several ways. Active-acoustic torpedoes generate sound signals similar to sonar and home in on the echo received from the target. Passive-acoustic torpedoes home in on noise generated by the target.
The submarine has been the naval vessel that used the torpedo most successfully, notably in the two world wars, when enormous tonnages of merchant shipping were sunk, mostly by German U-boats. World War II also saw the introduction of torpedo-carrying aircraft and homing, or acoustic, torpedoes. Torpedoes are an important element in antisubmarine warfare; attack submarines, designed to hunt missile submarines, are armed with torpedoes, including combination missile-torpedo weapons.
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