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A wire-guided missile is a missile that is guided by signals sent to it via thin wires connected between the missile and its guidance mechanism, which is located somewhere near the launch site. As the missile flies, the wires are reeled out behind it (command guidance). This guidance system is most commonly used in anti-tank missiles, where its ability to be used in areas of limited line-of-sight make it useful, while the range limit imposed by the length of the wire is not a serious concern.
The longest range wire-guided missiles in current use are limited to about 8 km (5.0 mi). [1]
Electrical wire guidance dates back to the early 20th century with an early example being the Lay Torpedo. A prototype ground-based electrical wire-guided torpedo was built by the Germans during World War II.
The pair of deployed German guided air-delivered ordnance designs, the Fritz X and Henschel Hs 293, both used the Kehl-Strassburg radio guidance system for control. However, because the British proved to be able to develop countermeasures to interfere with the Germans' use of the Kehl-Strassburg ordnance guidance system, rushed projects were started in 1944 in order to develop alternatives. The first[ citation needed ] system to be modified in this fashion was the Henschel Hs 293 anti-ship missile. Other examples included the X-4 missile.
The X-7 influenced other military thinkers after the war.[ citation needed ] By the early 1950s a number of experimental systems had been developed (for example, Malkara missile), leading to their widespread deployment in the late 1950s and early 1960s. Large numbers of Israeli tanks were destroyed using wire-guided AT-3 Sagger missiles during the Yom Kippur War of 1973. Wire guidance has remained the main system for most smaller weapons although newer systems such as laser beam riding have come into use in anti-aircraft and some anti-tank use roles (such as the US Hellfire missile and the Russian 9M133 Kornet).
Some torpedoes can be wire-guided, such as the U.S. Mk 48 Advanced Capability (ADCAP) torpedo, Russian UGST torpedo, or the Swedish Torped 613, which is guided by an insulated wire.
This is a timeline of notable early wire-guided missiles.
An anti-tank guided missile (ATGM), anti-tank missile, anti-tank guided weapon (ATGW) or anti-armor guided weapon is a guided missile primarily designed to hit and destroy heavily armored military vehicles. ATGMs range in size from shoulder-launched weapons, which can be transported by a single soldier, to larger tripod-mounted weapons, which require a squad or team to transport and fire, to vehicle and aircraft mounted missile systems.
Radio control is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors. Radio control is also used for control of model vehicles from a hand-held radio transmitter. Industrial, military, and scientific research organizations make use of radio-controlled vehicles as well. A rapidly growing application is control of unmanned aerial vehicles for both civilian and military uses, although these have more sophisticated control systems than traditional applications.
A glide bomb or stand-off bomb is a standoff weapon with flight control surfaces to give it a flatter, gliding flight path than that of a conventional bomb without such surfaces. This allows it to be released at a distance from the target rather than right over it, allowing a successful attack without exposing the launching aircraft to anti-aircraft defenses near the target. Glide bombs can accurately deliver warheads in a manner comparable to cruise missiles at a fraction of the cost—sometimes by installing flight control kits on simple unguided bombs—and they are very difficult for surface-to-air missiles to intercept due to their tiny radar signatures and short flight times. The only effective countermeasure in most cases is to shoot down enemy aircraft before they approach within launching range, making glide bombs very potent weapons where wartime exigencies prevent this.
Fritz X was the most common name for a German guided anti-ship glide bomb used during World War II. Fritz X was the world's first precision guided weapon deployed in combat and the first to sink a ship in combat. Fritz X was a nickname used both by Allied and Luftwaffe personnel. Alternative names include Ruhrstahl SD 1400 X, Kramer X-1, PC 1400X or FX 1400.
The Henschel Hs 293 was a World War II German radio-guided glide bomb. It is the first operational anti-shipping missile, first used unsuccessfully on 25 August 1943 and then with increasing success over the next year, ultimately damaging or sinking at least 25 ships. Allied efforts to jam the radio control link were increasingly successful despite German efforts to counter them. The weapon remained in use through 1944 when it was also used as an air-to-ground weapon to attack bridges to prevent the Allied breakout after D-Day, but proved almost useless in this role.
Manual command to line of sight is a method for guiding guided missiles.
The Wasserfall Ferngelenkte FlaRakete was a German guided supersonic surface-to-air missile project of World War II. Development was not completed before the end of the war and it was not used operationally.
The BGM-71 TOW is an American anti-tank missile. TOW replaced much smaller missiles like the SS.10 and ENTAC, offering roughly twice the effective range, a more powerful warhead, and a greatly improved semi-automatic command to line of sight (SACLOS) that could also be equipped with infrared cameras for night time use.
Swingfire was a British wire-guided anti-tank missile developed in the 1960s and produced from 1966 until 1993. The name refers to its ability to make a rapid turn of up to ninety degrees after firing to bring it onto the line of the sighting mechanism. This means that the launcher vehicle could be concealed and the operator, using a portable sight, placed at a distance in a more advantageous firing position.
The Malkara was one of the earliest guided anti-tank missiles (ATGMs). It was jointly developed by Australia and the United Kingdom between 1951 and 1954, and was in service from 1958 until gradually replaced by the Vickers Vigilant missile in the late 1960s. It was intended to be light enough to deploy with airborne forces, yet powerful enough to knock out any tank then in service. The basic form was later adapted for the short-range surface-to-air role as the Seacat and influenced the development of the Ikara.
The Vickers Vigilant was a British 1960s era MCLOS wire-guided anti-tank missile used by the British Army. It was also licence-built in the United States by Clevite for the US Marine Corps, and sometimes known as Clevite rounds in this case.
The SS.11 is a French manual command to line of sight wire-guided anti-tank missile manufactured by Nord Aviation. It is also available in the air-to-ground version, AS.11, which featured a stabilized sighting system. The AS.11 was also known as the AGM-22 in American service. It is among the earliest guided anti-tank missiles, entering service with the French Army in 1956 and remaining in service into the 1980s. It also formed the basis for the larger and longer-ranged SS.12/AS.12 series.
Wunderwaffe is a German word meaning "wonder-weapon" and was a term assigned during World War II by Nazi Germany's propaganda ministry to some revolutionary "superweapons". Most of these weapons however remained prototypes, which either never reached the combat theater, or if they did, were too late or in too insignificant numbers to have a military effect. The V-weapons, which were developed earlier and saw considerable deployment, especially against London and Antwerp, trace back to the same pool of highly inventive armament concepts. In the German language, the term Wunderwaffe generally refers to a universal solution which solves all problems related to a particular issue, mostly used ironically for its illusionary nature.
The Henschel Hs 294 was a guided air-to-sea missile developed by Henschel Flugzeug-Werke in Germany during World War II.
Orange William was a British project to develop a long-range anti-tank missile as a possible alternative to the Malkara being developed in Australia. The project was drawn up in 1954 and the resulting contract won by Fairey Engineering in 1956. It was very similar to Malkara in form and layout, including the Malkara's distinctive square fuselage. It differed primarily in its guidance system and the use of an infrared command link replacing the Malkara's manual wire guidance. The name is a randomly selected "rainbow code".
The Henschel Hs 298 was a 1940s German rocket-powered air-to-air missile designed by Professor Herbert Wagner of Henschel.
Television guidance (TGM) is a type of missile guidance system using a television camera in the missile or glide bomb that sends its signal back to the launch platform. There, a weapons officer or bomb aimer watches the image on a television screen and sends corrections to the missile, typically over a radio control link. Television guidance is not a seeker because it is not automated, although semi-automated systems with autopilots to smooth out the motion are known. They should not be confused with contrast seekers, which also use a television camera but are true automated seeker systems.
The Kehl-Straßburg radio control link was a German MCLOS radio control system of World War II. The system was named for Strasbourg, the French/German city on the Rhine and Kehl, at the time a suburb of Strasbourg. It was used by the Fritz X guided bomb and the Henschel Hs 293 guided missile, and would also be trialled in test of the Henschel Hs 298 MCLOS-guidance air-to-air missile.
The Pelican, also known as Bomb Mark 55 and, in one version, SWOD Mark 7, was a guided bomb developed by the United States Navy during World War II. Guided by semi-active radar homing, Pelican was produced in 1,000 lb (450 kg) and 1,500 lb (680 kg) sizes; the program reached the stage of live trials before being cancelled.