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99-842: The Mitsubishi AAM-5 (Type 04 air-to-air missile, 04式空対空誘導弾 ) is a short-range air-to-air missile developed and produced by Mitsubishi Heavy Industries for the Japan Air Self-Defense Force . Development of the missile as a replacement for the AAM-3 (Type 90) missile commenced in 1991, and it has been operational since 2004. Unlike the Type 90 guided missile, the AAM-5 does not have canard control surfaces, using thrust vectoring for high agility. The missile body has narrow strakes extending over most of its length. The NEC manufactured seeker has also been improved. Addition of

198-589: A 10-day state visit to the US . President Eisenhower pledged his continued support, and a parade was held in Diệm's honor. But Secretary of State Dulles privately conceded Diệm had to be backed because they could find no better alternative. Between 1954 and 1957, the Diệm government succeeded in preventing large-scale organized unrest in the countryside. In April 1957, insurgents launched an assassination campaign, referred to as "extermination of traitors". 17 people were killed in

297-669: A Marxist–Leninist political organization which operated primarily in Hong Kong and the Soviet Union . The party aimed to overthrow French rule and establish an independent communist state in Vietnam. In September 1940, Japan invaded French Indochina, following France's capitulation to Nazi Germany . French influence was suppressed by the Japanese, and in 1941 Cung, now known as Ho Chi Minh , returned to Vietnam to establish

396-625: A Military Assistance and Advisory Group (MAAG) to screen French requests for aid, advise on strategy, and train Vietnamese soldiers. By 1954, the US had spent $ 1 billion in support of the French military effort, shouldering 80% of the cost of the war. During the Battle of Dien Bien Phu in 1954, US carriers sailed to the Gulf of Tonkin and the US conducted reconnaissance flights. France and

495-565: A psychological warfare campaign which exaggerated anti-Catholic sentiment among the Viet Minh and distributed propaganda attributed to Viet Minh threatening an American attack on Hanoi with atomic bombs. During the 300-day period, up to one million northerners, mainly minority Catholics, moved south, fearing persecution by the Communists. The exodus was coordinated by a U.S.-funded $ 93 million relocation program, which involved

594-471: A ceasefire with the Viet Minh, and independence was granted to Cambodia, Laos, and Vietnam. At the 1954 Geneva Conference, Vietnam was temporarily partitioned at the 17th parallel . Ho Chi Minh wished to continue war in the south, but was restrained by Chinese allies who convinced him he could win control by electoral means. Under the Geneva Accords, civilians were allowed to move freely between

693-678: A combination of any of those three warhead types) is typically used in the attempt to disable or destroy the target aircraft. Warheads are typically detonated by a proximity fuze or by an impact fuze if it scores a direct hit. Less commonly, nuclear warheads have been mounted on a small number of air-to-air missile types (such as the AIM-26 Falcon ) although these are not known to have ever been used in combat. Guided missiles operate by detecting their target (usually by either radar or infrared methods, although rarely others such as laser guidance or optical tracking ), and then "homing" in on

792-451: A cone shape as the distance from the attacking aircraft increases. This will result in less accuracy for the missile because the beam may actually be larger than the target aircraft when the missile arrives. The missile could be securely within the beam but still not be close enough to destroy the target. Infrared guided (IR) missiles home on the heat produced by an aircraft. Early infra-red detectors had poor sensitivity, so could only track

891-646: A coordinated uprising in South Vietnam against the government and a third of the population was soon living in areas of communist control. In December 1960, North Vietnam formally created the Viet Cong (VC) with the intent of uniting all anti-GVN insurgents, including non-communists. It was formed in Memot, Cambodia , and directed through COSVN. The VC "placed heavy emphasis on the withdrawal of American advisors and influence, on land reform and liberalization of

990-520: A more "modest" winning margin of "60 to 70 percent." Diệm, however, viewed the election as a test of authority. He declared South Vietnam to be an independent state under the name Republic of Vietnam (ROV), with him as president. Likewise, Ho Chi Minh and other communists won at least 99% of the vote in North Vietnamese "elections". The domino theory , which argued that if a country fell to communism, all surrounding countries would follow,

1089-605: A more powerful motor that allows the missile to maneuver against crossing targets and launch at greater ranges, gives the launching aircraft improved tactical freedom. Other members of the 4th generation use focal plane arrays to offer greatly improved scanning and countermeasures resistance (especially against flares). These missiles are also much more agile, some by employing thrust vectoring (typically gimballed thrust ). The latest generation of short-range missiles again defined by advances in seeker technologies, this time electro-optical imaging infrared (IIR) seekers that allow

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1188-576: A narrow (30-degree) field of view and required the attacker to position himself behind the target ( rear aspect engagement ). This meant that the target aircraft only had to perform a slight turn to move outside the missile seeker's field of view and cause the missile to lose track of the target ("break lock"). The second-generation of short-range missiles utilized more effective seekers that were better cooled than its predecessors while being typically "uncaged"; resulting in improved sensitivity to heat signatures, an increase in field of view as well as allowing

1287-557: A person knowledgeable in Indochinese affairs who did not agree that had elections been held as of the time of the fighting, possibly 80% of the population would have voted for the Communist Ho Chi Minh as their leader rather than Chief of State Bảo Đại. Indeed, the lack of leadership and drive on the part of Bảo Đại was a factor in the feeling prevalent among Vietnamese that they had nothing to fight for. According to

1386-468: A policy of " Vietnamization " from 1969, which saw the conflict fought by an expanded ARVN, while US forces withdrew. A 1970 coup in Cambodia resulted in a PAVN invasion and a US–ARVN counter-invasion , escalating its civil war. US troops had mostly withdrawn from Vietnam by 1972, and the 1973 Paris Peace Accords saw the rest leave. The accords were broken almost immediately and fighting continued until

1485-411: A rocket of some type and the control actuation system or CAS. Dual-thrust solid-fuel rockets are common, but some longer-range missiles use liquid-fuel motors that can "throttle" to extend their range and preserve fuel for energy-intensive final maneuvering. Some solid-fuelled missiles mimic this technique with a second rocket motor which burns during the terminal homing phase. There are missiles, such as

1584-407: A specified range. Towed decoys which closely mimic engine heat and infra-red jammers can also be used. Some large aircraft and many combat helicopters make use of so-called "hot brick" infra-red jammers, typically mounted near the engines. Current research is developing laser devices which can spoof or destroy the guidance systems of infra-red guided missiles. See Infrared countermeasure . Start of

1683-565: A target from various angles, not just from behind, where the heat signature from the engines is strongest. Other types rely on radar guidance (either on-board or "painted" by the launching aircraft). In 1999 R-73 missile were adapted by Serb forces for surface to air missiles. The Houthi movement Missile Research and Development Centre and the Missile Force have tried to fire R-27/R-60/R-73/R-77 against Saudi aircraft. Using stockpiles of missiles from Yemeni Air Force stocks. The issue for

1782-508: A triaxial gimbal to the infrared seeker has increased the field of view, and an infrared focal plane array multi-element seeker allows infrared imaging. In particular, the addition of an INS means mid-course updates and LOAL ( Lock-on after launch ) is possible. Terminal homing is via infrared imaging (IIR). In terms of generation, it is placed in the same generation as missiles such as the AIM-9X and IRIS-T . This article relating to missiles

1881-587: Is a stub . You can help Misplaced Pages by expanding it . Air-to-air missile Air-to-air missiles are broadly put in two groups. Those designed to engage opposing aircraft at ranges of around 30 km to 40 km maximum are known as short-range or "within visual range" missiles (SRAAMs or WVRAAMs) and are sometimes called " dogfight " missiles because they are designed to optimize their agility rather than range. Most use infrared guidance and are called heat-seeking missiles. In contrast, medium- or long-range missiles (MRAAMs or LRAAMs), which both fall under

1980-463: Is called "off- boresight " launch. For example, the Russian Su-27 is equipped with an infra-red search and track (IRST) system with laser rangefinder for its HMS-aimed missiles. A recent advancement in missile guidance is electro-optical imaging. The Israeli Python-5 has an electro-optical seeker that scans designated area for targets via optical imaging. Once a target is acquired,

2079-582: Is possible for the system to take missiles straight from an aircraft. After a live-fire test occurred in September 2020 off the coasts of Florida, during which it successfully engaged a simulated cruise missile, in 2022 NASAMS was deployed to Ukraine, where for the first time this missile system was used in real combat conditions, and, according to Ukrainian government, was able to shot down more than 100 aerial targets. A conventional explosive blast warhead, fragmentation warhead, or continuous rod warhead (or

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2178-589: Is still a limitation to some degree) and could be distracted by the sun, a reflection of the sun off of a cloud or ground object, or any other "hot" object within its view. More modern infra-red guided missiles can detect the heat of an aircraft's skin, warmed by the friction of airflow, in addition to the fainter heat signature of the engine when the aircraft is seen from the side or head-on. This, combined with greater maneuverability, gives them an " all-aspect " capability, and an attacking aircraft no longer had to be behind its target to fire. Although launching from behind

2277-489: Is subject to a minimum range, before which it cannot maneuver effectively. In order to maneuver sufficiently from a poor launch angle at short ranges to hit its target, some missiles use thrust vectoring , which allow the missile to start turning "off the rail", before its motor has accelerated it up to high enough speeds for its small aerodynamic surfaces to be useful. Short-range air-to-air missiles (SRAAMs), typically used in " dogfighting " or close range air combat compare to

2376-414: Is that it enables a " fire-and-forget " mode of attack, where the attacking aircraft is free to pursue other targets or escape the area after launching the missile. Semi-active radar homing (SARH) guided missiles are simpler and more common. They function by detecting radar energy reflected from the target. The radar energy is emitted from the launching aircraft's own radar system. However, this means that

2475-512: Is the "home on jam" mode which, when installed, allows a radar-guided missile to home in on the jammer of the target aircraft if the primary seeker is jammed by the electronic countermeasures of the target aircraft. Air-to-air missiles are typically long, thin cylinders in order to reduce their cross section and thus minimize drag at the high speeds at which they travel. Missiles are divided into five primary systems (moving forward to aft): seeker, guidance, warhead, motor, and control actuation. At

2574-663: Is the most commonly used title in English . It has been called the Second Indochina War since it spread to Laos and Cambodia , the Vietnam Conflict , and Nam (colloquially 'Nam). In Vietnam it is commonly known as Kháng chiến chống Mỹ ( lit.   ' Resistance War against America ' ). The Government of Vietnam officially refers to it as the Resistance War against America to Save

2673-537: The R-60M or the Python-3 . The R-73 (missile) ( AA-11 Archer ) entered service in 1985 and marked a new generation of dogfight missile. It had a wider field of view and could be cued onto a target using a helmet mounted sight . This allowed it to be launched at targets that would otherwise not be seen by older generation missiles that generally stared forward while waiting to be launched. This capability, combined with

2772-526: The 1975 spring offensive and fall of Saigon to the PAVN, marking the war's end. North and South Vietnam were reunified in 1976. The war exacted enormous human cost : estimates of Vietnamese soldiers and civilians killed range from 970,000 to 3 million. Some 275,000–310,000 Cambodians , 20,000–62,000 Laotians , and 58,220 US service members died. Its end would precipitate the Vietnamese boat people and

2871-686: The ASRAAM and Sea Ceptor . The air-to-air missile grew out of the unguided air-to-air rockets used during the First World War . Le Prieur rockets were sometimes attached to the struts of biplanes and fired electrically, usually against observation balloons , by such early pilots as Albert Ball and A. M. Walters. Facing the Allied air superiority, Germany in World War II invested limited effort into missile research, initially adapting

2970-553: The Châu Đốc massacre at a bar in July, and in September a district chief was killed with his family. By early 1959, Diệm had come to regard the violence as an organized campaign and implemented Law 10/59, which made political violence punishable by death and property confiscation. There had been division among former Viet Minh, whose main goal was to hold elections promised in the Geneva Accords, leading to " wildcat " activities separate from

3069-669: The Cold War between the Soviet Union and US. American military involvement greatly escalated from 1965 until its withdrawal in 1973. The fighting spilled over into the Laotian and Cambodian Civil Wars , which ended with all three countries becoming communist in 1975. After the defeat of French Indochina in the First Indochina War that began in 1946, Vietnam gained independence in the 1954 Geneva Conference but

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3168-808: The Cuban Missile Crisis (October 1962) played out on television worldwide. It was the closest the Cold War came to nuclear war . The Kennedy administration remained committed to the Cold War foreign policy inherited from the Truman and Eisenhower administrations. In 1961, the US had 50,000 troops based in South Korea, and Kennedy faced four crisis situations: the failure of the Bay of Pigs Invasion he had approved in April, settlement negotiations between

3267-569: The French Navy and the US Seventh Fleet to ferry refugees. The northern refugees gave the later Ngô Đình Diệm regime a strong anti-communist constituency. Over 100,000 Viet Minh fighters went to the north for "regroupment", expecting to return south within two years. The Viet Minh left roughly 5,000 to 10,000 cadres in the south as a base for future insurgency. The last French soldiers left South Vietnam in April 1956 and

3366-669: The Ho Chi Minh trail to supply and reinforce the VC. By 1963, the north had covertly sent 40,000 soldiers of its own People's Army of Vietnam (PAVN), armed with Soviet and Chinese weapons, to fight in the insurgency in the south. President John F. Kennedy increased US involvement from 900 military advisors in 1960 to 16,300 in 1963 and sent more aid to the Army of the Republic of Vietnam (ARVN), which failed to produce results. In 1963, Diem

3465-660: The Korean War in June convinced Washington policymakers that the war in Indochina was another example of communist expansionism, directed by the Soviet Union. Military advisors from China began assisting the Viet Minh in July 1950. Chinese weapons, expertise, and laborers transformed the Viet Minh from a guerrilla force into a regular army. In September 1950, the US further enforced the Truman Doctrine by creating

3564-628: The Pentagon Papers , which commented on Eisenhower's observation, Diệm would have been a more popular candidate than Bảo Đại against Hồ, stating that "It is almost certain that by 1956 the proportion which might have voted for Ho - in a free election against Diem - would have been much smaller than 80%." In 1957, independent observers from India, Poland, and Canada representing the International Control Commission (ICC) stated that fair elections were impossible, with

3663-601: The Viet Minh , an anti-Japanese resistance movement that advocated for independence. The Viet Minh received aid from the Allies , namely the US, Soviet Union, and Republic of China . Beginning in 1944, the US Office of Strategic Services (O.S.S.) provided the Viet Minh with weapons, ammunition, and training to fight the occupying Japanese and Vichy French forces. Throughout the war, Vietnamese guerrilla resistance against

3762-480: The beyond-visual-range missiles . Most of the short-range air-to-air missiles are infrared guided and few are active radar guided . Those missiles usually classified into five "generations" according to the historical technological advances. Most of these advances were in infrared seeker technology (later combined with digital signal processing ). Early short-range missiles such as the early Sidewinders and K-13 (missile) ( AA-2 Atoll ) had infrared seekers with

3861-492: The 21st century missiles such as the ASRAAM use an " imaging infrared " seeker which "sees" the target (much like a digital video camera), and can distinguish between an aircraft and a point heat source such as a flare. They also feature a very wide detection angle, so the attacking aircraft does not have to be pointing straight at the target for the missile to lock on. The pilot can use a helmet mounted sight (HMS) and target another aircraft by looking at it, and then firing. This

3960-524: The British were opposed. Eisenhower, wary of involving the US in an Asian land war, decided against intervention. Throughout the conflict, US intelligence estimates remained skeptical of France's chance of success. On 7 May 1954, the French garrison at Dien Bien Phu surrendered. The defeat marked the end of French military involvement in Indochina. At the Geneva Conference , they negotiated

4059-455: The GVN, on coalition government and the neutralization of Vietnam." The identities of the leaders of the organization were often kept secret. Support for the VC was driven by resentment of Diem's reversal of Viet Minh land reforms in the countryside. The Viet Minh had confiscated large private landholdings, reduced rents and debts, and leased communal lands, mostly to poorer peasants. Diem brought

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4158-588: The ICC reporting that neither South nor North Vietnam had honored the armistice agreement. From April to June 1955, Diệm eliminated political opposition in the south by launching operations against religious groups: the Cao Đài and Hòa Hảo of Ba Cụt . The campaign also attacked the Bình Xuyên organized crime group, which was allied with members of the communist party secret police and had military elements. The group

4257-472: The Japanese grew dramatically, and by the end of 1944 the Viet Minh had grown to over 500,000 members. US President Franklin D. Roosevelt was an ardent supporter of Vietnamese resistance, and proposed that Vietnam's independence be granted under an international trusteeship following the war. Following the surrender of Japan in 1945, the Viet Minh launched the August Revolution , overthrowing

4356-677: The Japanese-backed Empire of Vietnam and seizing weapons from the surrendering Japanese forces. On September 2, Ho Chi Minh proclaimed the Declaration of independence of the Democratic Republic of Vietnam (DRV). However, on September 23, French forces overthrew the DRV and reinstated French rule. American support for the Viet Minh promptly ended, and O.S.S. forces left as the French sought to reassert control of

4455-494: The MBDA Meteor, that "breathe" air (using a ramjet , similar to a jet engine) in order to extend their range. Modern missiles use "low-smoke" motors – early missiles produced thick smoke trails, which were easily seen by the crew of the target aircraft alerting them to the attack and helping them determine how to evade it. The CAS is typically an electro-mechanical, servo control actuation system, which takes input from

4554-649: The Nation. It is sometimes called the American War . Vietnam had been under French control as part of French Indochina since the mid-19th century. Under French rule, Vietnamese nationalism was suppressed, so revolutionary groups conducted their activities abroad, particularly in France and China. One such nationalist, Nguyen Sinh Cung , established the Indochinese Communist Party in 1930,

4653-458: The PRC also completed its withdrawal from North Vietnam. Between 1953 and 1956, the North Vietnamese government instituted agrarian reforms, including "rent reduction" and "land reform", which resulted in political oppression. During land reform, North Vietnamese witnesses suggested a ratio of one execution for every 160 village residents, which extrapolates to 100,000 executions. Because the campaign

4752-538: The R-27 and R-77 is the lack of a radar to support their guidance to the target. However the R-73 and R-60 are infra-red heat seeking missiles. They only require, power, liquid nitrogen "to cool the seeker head" and a pylon to launch the missile. These missiles have been paired with a "US made FLIR Systems ULTRA 8500 turrets". Only one near miss has been verified and that was a R-27T fired at Royal Saudi Air Force F-15SA. However

4851-528: The State of Vietnam, with Bảo Đại as Emperor, and Ngô Đình Diệm as prime minister. Neither the US, nor Diệm's State of Vietnam, signed anything at the Geneva Conference. The non-communist Vietnamese delegation objected strenuously to any division of Vietnam, but lost when the French accepted the proposal of Viet Minh delegate Phạm Văn Đồng , who proposed Vietnam eventually be united by elections under

4950-514: The US discussed the use of tactical nuclear weapons , though reports of how seriously this was considered and by whom, are vague. According to then-Vice President Richard Nixon , the Joint Chiefs of Staff drew up plans to use nuclear weapons to support the French. Nixon, a so-called " hawk ", suggested the US might have to "put American boys in". President Dwight D. Eisenhower made American participation contingent on British support, but

5049-598: The US that early F-4 variants were armed only with missiles in the 1960s. High casualty rates during the Vietnam War caused the US to reintroduce autocannon and traditional dogfighting tactics but the missile remains the primary weapon in air combat. In the Falklands War British Harriers , using AIM-9L missiles were able to defeat faster Argentinian opponents. Since the late 20th century all-aspect heat-seeking designs can lock-on to

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5148-537: The USN's AIM-7 Sparrow and AIM-9 Sidewinder . Post-war research led the Royal Air Force to introduce Fairey Fireflash into service in 1957 but their results were unsuccessful. The Soviet Air Force introduced its K-5 into service in 1957. As missile systems have continued to advance, modern air warfare consists almost entirely of missile firing. The use of beyond-visual-range combat became so pervasive in

5247-526: The Vienna summit with Khrushchev, "Now we have a problem making our power credible and Vietnam looks like the place." Kennedy's policy toward South Vietnam assumed Diệm and his forces had to defeat the guerrillas on their own. He was against the deployment of American combat troops and observed "to introduce U.S. forces in large numbers there today, while it might have an initially favorable military impact, would almost certainly lead to adverse political and, in

5346-683: The anti-radiation missile (ARM) design, pioneered during Vietnam and used to home in against emitting surface-to-air missile (SAM) sites, to an air intercept weapon. Current air-to-air passive anti-radiation missile development is thought to be a countermeasure to airborne early warning and control (AEW&C – also known as AEW or AWACS) aircraft which typically mount powerful search radars. Due to their dependence on target aircraft radar emissions, when used against fighter aircraft passive anti-radiation missiles are primarily limited to forward-aspect intercept geometry. For examples, see Vympel R-27 and Brazo . Another aspect of passive anti-radiation homing

5445-657: The attack radar to illuminate the target during part or all of the missile interception itself. Radar guidance is normally used for medium- or long-range missiles, where the infra-red signature of the target would be too faint for an infra-red detector to track. There are three major types of radar-guided missile – active, semi-active, and passive. Radar-guided missiles can be countered by rapid maneuvering (which may result in them "breaking lock", or may cause them to overshoot), deploying chaff or using electronic counter-measures . Active radar (AR)-guided missiles carry their own radar system to detect and track their target. However,

5544-851: The border. About 500 of the "regroupees" of 1954 were sent south on the trail during its first year of operation. The first arms delivery via the trail was completed in August 1959. In April 1960, North Vietnam imposed universal military conscription for men. About 40,000 communist soldiers infiltrated the south from 1961 to 1963. In the 1960 U.S. presidential election , Senator John F. Kennedy defeated incumbent Vice President Richard Nixon. Although Eisenhower warned Kennedy about Laos and Vietnam, Europe and Latin America "loomed larger than Asia on his sights." In June 1961, he bitterly disagreed with Soviet premier Nikita Khrushchev when they met in Vienna to discuss key U.S.–Soviet issues. Only 16 months later,

5643-424: The category of beyond-visual-range missiles (BVRAAMs), tend to rely upon radar guidance, of which there are many forms. Some modern ones use inertial guidance and/or "mid-course updates" to get the missile close enough to use an active homing sensor. The concepts of air-to-air missiles and surface-to-air missiles are closely related, and in some cases versions of the same weapon may be used for both roles, such as

5742-502: The country . Tensions between the Viet Minh and French authorities had erupted into full-scale war by 1946, a conflict which soon became entwined with the wider Cold War . On March 12, 1947, US President Harry S. Truman announced the Truman Doctrine , an anticommunist foreign policy which pledged US support to nations resisting "attempted subjugation by armed minorities or by outside pressures". In Indochina, this doctrine

5841-497: The country to the Virgin Mary . In the summer of 1955, Diệm launched the "Denounce the Communists" campaign, during which suspected communists and other anti-government elements were arrested, imprisoned, tortured, or executed. He instituted the death penalty in August 1956 against activity deemed communist. The North Vietnamese government claimed that, by November 1957, over 65,000 individuals were imprisoned and 2,148 killed in

5940-637: The demilitarized zone, between North and South Vietnam. The North Vietnamese Communist Party approved a "people's war" on the South at a session in January 1959, and, in May, Group 559 was established to maintain and upgrade the Ho Chi Minh trail , at this time a six-month mountain trek through Laos. On 28 July, North Vietnamese and Pathet Lao forces invaded Laos, fighting the Royal Lao Army all along

6039-434: The drawback is that these missiles are intended to be fired from one jet fighter against another. So the motors and fuel load are smaller than a purpose built surface to air missile. On the Western side, the Norwegian-American made NASAMS air defense system has been developed for using AIM-9 Sidewinder , IRIS-T and AMRAAM air-to-air missiles to intercept targets. None of these missiles require modifications and hence it

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6138-415: The end of 1965, and to 536,000 by the end of 1968. US forces relied on air supremacy and overwhelming firepower to conduct search and destroy operations in rural areas. In 1968, North Vietnam launched the Tet Offensive , which was a tactical defeat but convinced many in the US that the war could not be won. The PAVN began engaging in more conventional warfare . Johnson's successor, Richard Nixon , began

6237-414: The front is the seeker, either a radar system, radar homer, or infra-red detector. Behind that lies the avionics which control the missile. Typically after that, in the centre of the missile, is the warhead, usually several kilograms of high explosive surrounded by metal that fragments on detonation (or in some cases, pre-fragmented metal). The rear part of the missile contains the propulsion system, usually

6336-422: The front or side aspects, as opposed to just the hotter engine nozzle(s) from rear-aspect, allowing for a true all-aspect capability. This significantly expanded potential attacking envelopes, allowing the attacker to fire at a target which was side-on or front-on to itself as opposed to just the rear. While the field-of-view was still restricted to a fairly narrow cone, the attack at least did not have to be behind

6435-488: The guidance system and manipulates the airfoils or fins at the rear of the missile that guide or steers the weapon to target. Nowadays, countries start developing hypersonic air-to-air missile using scramjet engines (such as R-37 , or AIM-260 JATM ), which not only increases efficiency for BVR battles, but it also makes survival chances of target aircraft drop to nearly zero. A number of terms frequently crop up in discussions of air-to-air missile performance. A missile

6534-426: The hot exhaust pipes of an aircraft. This meant an attacking aircraft had to maneuver to a position behind its target before it could fire an infra-red guided missile. This also limited the range of the missile as the infra-red signature soon become too small to detect with increasing distance and after launch the missile was playing "catch-up" with its target. Early infrared seekers were unusable in clouds or rain (which

6633-454: The insurgency entitled "The Road to the South" to the Politburo in Hanoi. However, as China and the Soviets opposed confrontation, his plan was rejected. Despite this, the North Vietnamese leadership approved tentative measures to revive southern insurgency in December 1956. Communist forces were under a single command structure set up in 1958. In May 1958, North Vietnamese forces seized the transportation hub at Tchepone in Southern Laos near

6732-402: The landlords back, people who had been farming land for years had to return it to landlords and pay years of back rent. Marilyn B. Young wrote that "The divisions within villages reproduced those that had existed against the French: 75% support for the NLF, 20% trying to remain neutral and 5% firmly pro-government". In March 1956, southern communist leader Lê Duẩn presented a plan to revive

6831-416: The larger Indochina refugee crisis , which saw millions leave Indochina, an estimated 250,000 perished at sea. The US destroyed 20% of South Vietnam's jungle and 20–50% of the mangrove forests, by spraying over 20 million U.S. gallons (75 million liters) of toxic herbicides; a notable example of ecocide . The Khmer Rouge carried out the Cambodian genocide , while conflict between them and

6930-417: The launch aircraft has to maintain a "lock" on the target (keep illuminating the target aircraft with its own radar) until the missile makes the interception. This limits the attacking aircraft's ability to maneuver, which may be necessary should threats to the attacking aircraft appear. An advantage of SARH-guided missiles is that they are homing on the reflected radar signal, so accuracy actually increases as

7029-420: The long run, adverse military consequences." The quality of the South Vietnamese military, however, remained poor. Poor leadership, corruption, and political promotions weakened the ARVN. The frequency of guerrilla attacks rose as the insurgency gathered steam. While Hanoi's support for the VC played a role, South Vietnamese governmental incompetence was at the core of the crisis. One major issue Kennedy raised

7128-482: The missile close to the target. At a predetermined point (frequently based on time since launch or arrival near the predicted target location) the missile's radar system is activated (the missile is said to "go active"), and the missile then homes in on the target. If the range from the attacking aircraft to the target is within the range of the missile's radar system, the missile can "go active" immediately upon launch. The great advantage of an active radar homing system

7227-500: The missile gets closer because the reflection comes from a "point source": the target. Against this, if there are multiple targets, each will be reflecting the same radar signal and the missile may become confused as to which target is its intended victim. The missile may well be unable to pick a specific target and fly through a formation without passing within lethal range of any specific aircraft. Newer missiles have logic circuits in their guidance systems to help prevent this problem. At

7326-408: The missile that allows it to home in on the jamming signal. An early form of radar guidance was " beam-riding " (BR). In this method, the attacking aircraft directs a narrow beam of radar energy at the target. The air-to-air missile was launched into the beam, where sensors on the aft of the missile controlled the missile, keeping it within the beam. So long as the beam was kept on the target aircraft,

7425-403: The missile will lock-on to it for the kill. Electro-optical seekers can be programmed to target vital area of an aircraft, such as the cockpit. Since it does not depend on the target aircraft's heat signature, it can be used against low-heat targets such as UAVs and cruise missiles . However, clouds can get in the way of electro-optical sensors. Evolving missile guidance designs are converting

7524-405: The missile would ride the beam until making the interception. While conceptually simple, the move is hard because of the challenge of simultaneously keeping the beam solidly on the target (which could not be relied upon to cooperate by flying straight and level), continuing to fly one's own aircraft, and monitoring enemy countermeasures. An added complication was that the beam will spread out into

7623-904: The missiles to "see" images rather than single "points" of infrared radiation (heat). The sensors combined with more powerful digital signal processing provide the following benefits: Examples of fifth generation short-range missiles include: For each missile, short notes are given, including an indication of its range and guidance mechanism. Vietnam War ≈860,000 (1967) ≈1,420,000 (1968) Total military dead/missing: ≈1,100,000 Total military wounded: ≈604,200 (excluding GRUNK / Khmer Rouge and Pathet Lao ) Second Third American intervention 1965 1966 1967 Tet Offensive and aftermath Vietnamization 1969–1971 1972 Post- Paris Peace Accords (1973–1974) Spring 1975 Air operations Naval operations Lists of allied operations The Vietnam War (1 November 1955 – 30 April 1975)

7722-446: The other communists and anti-GVN activists. Douglas Pike estimated that insurgents carried out 2,000 abductions, and 1,700 assassinations of government officials, village chiefs, hospital workers and teachers from 1957 to 1960. Violence between insurgents and government forces increased drastically from 180 clashes in January 1960, to 545 clashes in September. In September 1960, COSVN , North Vietnam's southern headquarters, ordered

7821-481: The possibility of leading a missile within its FOV for an increased probability of kill against a maneuvering target. In some cases, the improved sensitivity to heat signatures allows for a very limited side and even all-aspect tracking, as is the case with the Red Top missile . In conjunction with improved control surfaces and propulsion motors over the first generation of dogfight missiles, the technological advances of

7920-659: The pro-Western government of Laos and the Pathet Lao communist movement in May, construction of the Berlin Wall in August, and the Cuban Missile Crisis in October. Kennedy believed another failure to stop communist expansion would irreparably damage US credibility. He was determined to "draw a line in the sand" and prevent a communist victory in Vietnam. He told James Reston of The New York Times after

8019-412: The process. According to Gabriel Kolko , 40,000 political prisoners had been jailed by the end of 1958. In October 1956, Diệm launched a land reform program limiting the size of rice farms per owner. 1.8m acres of farm land became available for purchase by landless people. By 1960, the process had stalled because many of Diem's biggest supporters were large landowners. In May 1957, Diệm undertook

8118-564: The projectile of the unguided 21 cm Nebelwerfer 42 infantry barrage rocket system into the air-launched BR 21 anti-aircraft rocket in 1943; leading to the deployment of the R4M unguided rocket and the development of various guided missile prototypes such as the Ruhrstahl X-4 . The US Navy and US Air Force began equipping guided missiles in 1956, deploying the USAF's AIM-4 Falcon and

8217-402: The same time, jamming the missile lock-on is easier because the launching aircraft is further from the target than the missile, so the radar signal has to travel further and is greatly attenuated over the distance. This means that the missile may be jammed or "spoofed" by countermeasures whose signals grow stronger as the missile gets closer. One counter to this is a "home on jam" capability in

8316-471: The second-generation short-range missiles allowed them to be used not just on non-maneuvering bombers, but also actively maneuvering fighters. Examples include advanced derivatives of the K-13 (missile) and AIM-9 such as K-13M ( R-13M , Object 380) or AIM-9D / G / H . This generation introduced much more sensitive seekers that are capable of locking onto the warm heat irradiated by the skins of aircraft from

8415-409: The size of the radar antenna is limited by the small diameter of missiles, limiting its range which typically means such missiles are launched at a predicted future location of the target, often relying on separate guidance systems such as Global Positioning System , inertial guidance , or a mid-course update from either the launching aircraft or other system that can communicate with the missile to get

8514-842: The supervision of "local commissions". The US countered with what became known as the "American Plan", with the support of South Vietnam and the UK. It provided for unification elections under the supervision of the UN, but was rejected by the Soviet delegation. The US said, "With respect to the statement made by the representative of the State of Vietnam, the United States reiterates its traditional position that peoples are entitled to determine their own future and that it will not join in any arrangement which would hinder this". US President Eisenhower wrote in 1954: I have never talked or corresponded with

8613-410: The target increases the probability of a hit, the launching aircraft usually has to be closer to the target in such a tail-chase engagement . An aircraft can defend against infra-red missiles by dropping flares that are hotter than the aircraft, so the missile homes in on the brighter, hotter target. In turn, IR missiles may employ filters to enable it to ignore targets whose temperature is not within

8712-440: The target on a collision course. Although the missile may use radar or infra-red guidance to home on the target, the launching aircraft may detect and track the target before launch by other means. Infra-red guided missiles can be "slaved" to an attack radar in order to find the target and radar-guided missiles can be launched at targets detected visually or via an infra-red search and track (IRST) system, although they may require

8811-446: The target. Also typical of the third generation of short-range missiles are further improved agility over the previous generation as well as their ability to radar-slave; which is acquiring tracking data from the launching aircraft's radar or IRST systems, allowing attackers to launch missiles without ever pointing the nose of the aircraft at an enemy prior to leading the missile. Examples of this generation of dogfight missiles include

8910-522: The two provisional states for a 300-day period. Elections throughout the country were to be held in 1956 to establish a unified government. However, the US, represented at the conference by Secretary of State John Foster Dulles , objected to the resolution; Dulles' objection was supported only by the representative of Bảo Đại. John Foster's brother, Allen Dulles , who was director of the Central Intelligence Agency , then initiated

9009-592: The unified Vietnam escalated into the Cambodian–Vietnamese War . In response, China invaded Vietnam , with border conflicts lasting until 1991. Within the US, the war gave rise to Vietnam syndrome , a public aversion to American overseas military involvement, which, with the Watergate scandal , contributed to the crisis of confidence that affected America throughout the 1970s. Various names have been applied and have shifted over time, though Vietnam War

9108-596: Was an armed conflict in Vietnam , Laos , and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam was supported by the Soviet Union and China , while South Vietnam was supported by the United States and other anti-communist nations. The conflict was the second of the Indochina Wars and a major proxy war of

9207-455: Was defeated in April following a battle in Saigon . As broad-based opposition to his harsh tactics mounted, Diệm increasingly sought to blame the communists. In a referendum on the future of the State of Vietnam in October 1955, Diệm rigged the poll supervised by his brother Ngô Đình Nhu and was credited with 98% of the vote, including 133% in Saigon. His American advisors had recommended

9306-433: Was divided into two parts at the 17th parallel : the Viet Minh , led by Ho Chi Minh , took control of North Vietnam, while the US assumed financial and military support for South Vietnam, led by Ngo Dinh Diem . The North Vietnamese began supplying and directing the Viet Cong (VC), a common front of dissidents in the south, which intensified a guerrilla war from 1957. In 1958, North Vietnam invaded Laos , establishing

9405-888: Was first proposed by the Eisenhower administration . John F. Kennedy , then a senator , said in a speech to the American Friends of Vietnam : "Burma, Thailand, India, Japan, the Philippines and obviously Laos and Cambodia are among those whose security would be threatened if the Red Tide of Communism overflowed into Vietnam." A devout Roman Catholic, Diệm was fervently anti-communist, nationalist, and socially conservative. Historian Luu Doan Huynh notes "Diệm represented narrow and extremist nationalism coupled with autocracy and nepotism ." Most Vietnamese were Buddhist , and alarmed by Diệm's actions, like his dedication of

9504-683: Was first put into practice in February 1950, when the United States recognized the French-backed State of Vietnam in Saigon , led by former Emperor Bảo Đại, as the legitimate government of Vietnam, after the communist states of the Soviet Union and People's Republic of China recognized the Democratic Republic of Vietnam , led by Ho Chi Minh, as the legitimate Vietnamese government the previous month. The outbreak of

9603-474: Was killed in a US-backed military coup , which added to the south's instability. Following the Gulf of Tonkin incident in 1964, the US Congress passed a resolution that gave President Lyndon B. Johnson authority to increase military presence without a declaration of war. Johnson launched a bombing campaign of the north and began sending combat troops, dramatically increasing deployment to 184,000 by

9702-523: Was mainly in the Red River Delta area, 50,000 executions became accepted by scholars. However, declassified documents from Vietnamese and Hungarian archives indicate executions were much lower, though likely greater than 13,500. In 1956, leaders in Hanoi admitted to "excesses" in implementing this program and restored much of the land to the original owners. The south, meanwhile, constituted

9801-579: Was whether the Soviet space and missile programs had surpassed those of the US. Although Kennedy stressed long-range missile parity with the Soviets, he was interested in using special forces for counterinsurgency warfare in Third World countries threatened by communist insurgencies. Although they were intended for use behind front lines after a conventional Soviet invasion of Europe, Kennedy believed guerrilla tactics employed by special forces, such as

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