Background Low-speed, fixed wing Allied aircraft like the Soviet
Polikarpov Po-2 training and utility biplane had been used as early as 1942 to provide
night harassment attack capability against the
Wehrmacht Heer on the
Eastern Front, most effectively in the
Battle of the Caucasus as exemplified by the
Night Witches all-female Soviet air unit. Following
Operation Overlord in 1944, the military version of the similarly slow-flying
Piper J-3 Cub high-wing civilian monoplane, the L-4 Grasshopper, begun to be used in a light anti-armor role by a few U.S. Army artillery spotter units over France; these aircraft were field-outfitted with either two or four
bazooka rocket launchers attached to the
lift struts, against German armored fighting vehicles. During the summer of 1944, U.S. Army Major
Charles Carpenter managed to successfully take on an anti-armor role with his rocket-armed Piper L-4. His L-4, bearing US Army serial number 43-30426 and named
Rosie the Rocketer, armed with six bazookas, had notable success in an engagement during the
Battle of Arracourt on September 20, 1944, employing
top attack tactics in knocking out at least four German armored vehicles, as a pioneering example of taking on heavy enemy armor from a slow-flying aircraft. was in some cases armed as with the Mi-4MU variant. The Germans were also engaged in such ad hoc low-speed light aircraft platforms for ground attack very late in the war, with one subtype of the
Bücker Bestmann trainer—the
Bü 181C-3—armed with four
Panzerfaust 100 anti-tank grenade launchers, two under each of the low-winged monoplane's wing panels, for the concluding two months of the war in Europe. This sort of role, being undertaken by low-speed fixed-wing light aircraft was something that was also likely to be achievable after World War II, from the increasing numbers of post-war military helicopter designs. The only American helicopter in use during the war years, the
Sikorsky R-4, was only being used for rescue and were still very much experimental in nature. armed with minigun and rocket pods In the early 1950s, various countries around the world started to make increased use of helicopters in their operations in transport and liaison roles. Later on it was realised that these helicopters, successors to the World War II-era Sikorsky R-4, could be armed with weapons in order to provide them with limited combat capability. Early examples include armed
Sikorsky H-34s in service with the US Air Force and armed
Mil Mi-4 in service with the
Soviet Air Forces. This "experimental" trend towards the development of dedicated attack helicopters continued into the 1960s with the deployment of armed
Bell UH-1s and
Mil Mi-8s during the
Vietnam War, to this day the pair of
most produced helicopter designs in aviation history. Bell helicopter employee and Vietnam war veteran, Billy "Bill" Frank Perkins, though more widely unknown, was the first person to ever fly an attack helicopter; he is in possession of an official certificate stating so. These helicopters proved to be moderately successful in these configurations, but due to a lack of armor protection and speed, they were ultimately ineffective platforms for mounting weapons in higher-threat ground combat environments. Since the 1960s, various countries around the world started to design and develop various types of helicopters with the purpose of providing a heavily armed and protected aerial vehicle that can perform a variety of combat roles, from reconnaissance to aerial assault missions. By the 1990s, the missile-armed attack helicopter evolved into a primary anti-tank weapon. Able to quickly move about the battlefield and launch fleeting "pop-up attacks", helicopters presented a major threat even with the presence of organic air defenses. The helicopter gunship became a major tool against tank warfare, and most attack helicopters became more and more optimized for the antitank mission.
United States Amid the opening months of the
Korean War era, during August 1950, a joint US Navy and Marine Corps test used a newly acquired
Bell HTL-4 helicopter to test if a bazooka could be fired from a helicopter in flight. One of the larger 3.5 inch (90mm calibre) models of the bazooka was chosen, and was mounted ahead and to the right of the helicopter to allow the door to remain clear. The bazooka was successfully tested, although it was discovered that it would require shielding for the engine compartment, which was exposed in the model 47 and other early helicopters. The helicopter itself belonged to HMX-1, a Marine experimental helicopter squadron. In the mid-1960s, the U.S. Army concluded that a purpose-built attack helicopter with more speed and firepower than current
armed helicopters was required in the face of increasingly intense ground fire (often using heavy machine guns and anti-tank rockets) from
Viet Cong and
NVA troops. Based on this realization, and with the growing involvement in Vietnam, the U.S. Army developed the requirements for a dedicated attack helicopter, the Advanced Aerial Fire Support System (AAFSS). The aircraft design selected for this program in 1965, was
Lockheed's AH-56 Cheyenne. As the Army began its acquisition of a dedicated attack helicopter, it sought options to improve performance over the continued use of improvised interim aircraft (such as the UH-1B/C). In late 1965, a panel of high-level officers was selected to evaluate several prototype versions of armed and attack helicopters to determine which provided the most significant increase in capability to the UH-1B. The three highest-ranked aircraft, the
Sikorsky S-61,
Kaman H-2 "Tomahawk", and the
Bell AH-1 Cobra, were selected to compete in flight trials conducted by the Army's Aviation Test Activity. Upon completion of the flight evaluations, the Test Activity recommended Bell's Huey Cobra to be an interim armed helicopter until the Cheyenne was fielded. On 13 April 1966, the U.S. Army awarded Bell Helicopter Company a production contract for 110 AH-1G Cobras. By 1972, when the Cheyenne program was eventually cancelled to make way for the
Advanced Attack Helicopter (AAH), Although
AH-1Gs served well, they proved vulnerable even in a mid-intensity environment. From this program the Hughes YAH-64 came out as the winner. The prototype YAH-64 was first flown on 30 September 1975. The U.S. Army selected the YAH-64 over the
Bell YAH-63 in 1976, and later approved full production in 1982. After purchasing Hughes Helicopters in 1984, McDonnell Douglas continued and turned it into the
AH-64 Apache production and development. The helicopter was introduced to U.S. Army service in April 1986. Today, the US attack helicopter has been further refined, and the AH-64D Apache Longbow demonstrates many of the advanced technologies being considered for deployment on future gunships. The US Marine Corps also continued to employ attack helicopters in the direct fire support role, in the form of the
AH-1 Super Cobra. While helicopters were effective tank-killers in the Middle East, attack helicopters are being seen more in a multipurpose role. Tactics, such as
tank plinking, showed that fixed-wing aircraft could be effective against tanks, but helicopters retained a unique low-altitude, low-speed capability for close air support. Other purpose-built helicopters were developed for
special operations missions, including the
MH-6 for extremely close support.
Soviet Union and its successor states . During the early 1960s, Soviet engineers started experimenting with various designs aimed at producing an aerial vehicle that could provide battlefield mobility for infantry and provide fire support to army forces on the ground. The first of these concepts was a mock-up unveiled in 1966 in the experimental shop of the Ministry of Aircraft's factory number 329, where
Mikhail Leont'yevich Mil was head designer. The mock-up, which was designated V-24, was based on another project, the
V-22 utility helicopter, which itself never entered production. The V-24 had an infantry transport compartment that could hold eight troops sitting back to back, and a set of small wings positioned to the top rear of the passenger cabin, capable of holding up to six missiles or rocket pods, along with a twin-barrel
GSh-23L cannon fixed to the landing skid. These designs were proposed by Mil to the
Soviet armed forces, and while he had the support of a number of strategists, he was opposed by several more senior members of the armed forces who believed that conventional weapons were a better use of resources. Despite the opposition, Mil managed to persuade the defence minister's first deputy, Marshal
Andrey A. Grechko, to convene an expert panel to look into the matter. While the panel's opinions were mixed, supporters of the project eventually held sway and a request for design proposals for a battlefield support helicopter was issued. The development of
gunships and attack helicopters by the US Army during the
Vietnam War convinced the Soviets of the advantages of armed helicopter ground support doctrine, which had a positive influence on moving forward with the development of the
Mil Mi-24. After several mock-ups were produced, a directive was issued on 6 May 1968 to proceed with development of a twin-engine design of the helicopter. Work proceeded under Mil until his death in 1970. Detailed design work began in August 1968 under the codename Yellow 24. A full-scale mock-up of the design was reviewed and approved in February 1969. Flight tests with a prototype began on 15 September 1969 with a tethered hover, and four days later the first free flight was conducted. A second prototype was built, followed by a test batch of ten helicopters. A number of other design changes were made until the production version Mi-24A entered production in 1970, obtaining its
initial operating capability in 1971 and was officially accepted into the state arsenal in 1972. Numerous versions have been developed to this day. In 1972, following completion of the Mi-24, development began on a unique attack helicopter with transport capability. The new design had a reduced transport capability (3 troops instead of 8) and was called the
Mil Mi-28. along with the Ka-50 represented the first dedicated attack helicopter of the
Soviet Air Forces in the 1980s. In 1977, a preliminary design of the
Mil Mi-28 was chosen, in a classic single-rotor layout. Its transport capability was removed and it lost its similarity to the Mi-24. Design work on the Mi-28 began under Marat Tishchenko in 1980. In 1981, a design and a mock-up were accepted. The prototype (no. 012) was first flown on 10 November 1982. in 1994. The program was promoted as a civilian project, and was able to secure significant Western technical assistance, such as from Eurocopter (rotor installation design consultancy), Pratt & Whitney Canada (PT6C turboshaft engine) and Agusta Westland (transmission). The Chinese concentrated on areas where it could not obtain foreign help. The 602nd Research Institute's called its proposed armed helicopter design the
Z-10 (). The 602nd Research Institute was assigned as the chief designer, while
Harbin Aircraft Manufacturing Corporation (HAMC) of
China Aviation Industry Corporation II (AVIC II) was assigned as the primary manufacturer. Nearly four dozen other establishments participated in the program. According to Chinese sources, the initial test flights were concluded on December 17, 2003, whereas according to other sources they were completed nine months earlier in March 2003. According to
Jane's Information Group, a total of 3 prototypes had completed over 400 hours of test flights by this time. By 2004, 3 more prototypes were built, for a total of 6, and a second stage of test flights were concluded on December 15, 2004. In one of the test flights the future commander-in-chief of the
People's Liberation Army Ground Force Air Force (PLAGAF), Song Xiangsheng (), was on board the prototype. A third stage of intensive test flights followed, taking place during both day and night. By January 2006 weaponry and sensor tests, including firing of live ammunition, had taken place. The helicopter was introduced to the general public in December 2010 and subsequently entered service with the
People's Liberation Army.
Italy In 1972, the
Italian Army began forming a requirement for a light observation and anti-tank helicopter. Agusta had initially studied the development of a combat-orientated derivative of their existing
A109 helicopter, however they decided to proceed with the development of a more ambitious helicopter design. In 1978, Agusta formally began the design process on what would become the
Agusta A129 Mangusta. On 11 September 1983, the first of five A129 prototypes made the type's
maiden flight; the fifth prototype would first fly in March 1986. The Italian Army placed an order for 60 A129s. It was decided that much of the helicopter's functionality was to be automated; as such, parts of the flight and armament systems are monitored and directly controlled by onboard computers. The A129 shares considerable design similarities to Agusta's earlier
A109 utility helicopter; the rear section of the A129 was derived from the A109 and incorporated to an entirely new forward section. In 1986, the governments of Italy, the Netherlands, Spain and the United Kingdom signed a memorandum of understanding to investigate an improved version of the A129, alternatively called the
Joint European Helicopter Tonal or
Light Attack Helicopter (LAH). By 1988, feasibility studies for four different options had been conducted for the LAH, these would have between 80 per cent and 20 per cent growth over the initial A129; both single-engine and twin-engine configurations were examined using various new powerplants, as well as a new rotor system, retractable landing gear, improved sensors and more powerful armament. However, the LAH project collapsed in 1990 following Britain and the Netherlands independently deciding to withdraw from the program and eventually procure the
AH-64 Apache instead.
France, Germany and Spain prepare for take-off. In 1984, the French and West German governments issued a requirement for an advanced multirole battlefield
helicopter. A joint venture consisting of
Aérospatiale and
MBB was subsequently chosen as the preferred supplier. According to statements by the French
Defence Minister André Giraud in April 1986, the collaborative effort had become more expensive than an individual national programme and was forecast to take longer to complete as well. In July 1986, a government report into the project alleged that the development had become distanced from the requirements and preferences of the military customers the Tiger was being developed for. Much of the project's organisational framework was rapidly redeveloped between 1987 and 1989; such as the installation of a Franco-German Helicopter Office to act as a program executive agency in May 1989. in its HAP configuration, featuring 2 guided
air-to-air Mistral missiles and a pod of 22 unguided missiles with a range of 4 km Due to the end of the
Cold War and subsequent defence budgets decreases in the 1990s, financial pressures led to further questions regarding the necessity for the entire program. In 1992, Aérospatiale and MBB, among other companies, merged to form the
Eurocopter Group; this led to considerable consolidation of the aerospace industry and the Tiger project itself. A major agreement was struck in December 1996 between France and Germany that cemented the Tiger's prospects and committed the development of supporting elements, such as a series of new generation missile designs for use by the new combat helicopter. On 18 June 1999, both Germany and France publicly placed orders for an initial batch of 160 Tiger helicopters, 80 for each nation, valued at €3.3 billion. On 22 March 2002, the first production Tiger was rolled out in a large ceremony held at Eurocopter's Donauworth factory; although production models began initial acceptance trials in 2003, the first official delivery to the French Army took place on 18 March 2005; the first official Tiger delivery to the Germany followed on 6 April 2005. Germany reduced its order to 57 in March 2013. In 2008 OCCAR estimated the project cost at . France's FY2012 budget put their share of the project at €6.3bn (~US$8.5bn), implying a programme cost of €14.5bn (~US$19.5bn) to the three main partners. At FY2012 prices, their 40 HAP cost €27m/unit (~US$36m) and their 40 HAD €35.6m/unit (~US$48m), including development costs the French Tigers cost €78.8m (~US$106m) each. a larger and more powerful helicopter. These components were already used on the
Atlas Oryx, a local upgrade and modification of the
Aérospatiale Puma. Unfortunately, the development of the Rooivalk continued until after the conclusion of the
South African Border War and defence budgets were slashed due to parliamentary changes to the requirements of the national air force. This resulted in an extensive development and production period beginning in 1990 until 2007, during which 12 aircraft were produced for use by the
South African Air Force. These aircraft were subsequently upgraded to the Block 1F standard by 2011. The upgrade involves improved targeting systems and other avionics which enable the helicopter to use guided missiles for the first time. The
Mokopa ATGM was qualified as part of the upgrade process. Gearbox components were improved and cooling problems with the F2 20 mm cannon were also addressed. On 1 April 2011, the
South African Air Force received the first five of eleven (one of the twelve aircraft originally delivered to the SAAF was written off after an accident) Block 1F upgraded Rooivalk. The ninth and tenth Rooivalk attack helicopters were delivered in September 2012 following their upgrade to the Block 1F initial operating standard. The eleventh and final Rooivalk was delivered on 13 March 2013.
India in camouflage colors The
Indian Army deploys the
Mil Mi-35 (export variant of Mi-24V) and
HAL Rudra as of 2014. During the
Kargil War in 1999, the
Indian Air Force and the
Indian Army found that there was a need for helicopters that can operate at such high-altitude conditions with ease. Limitations in terms of both high payloads and maneuverability of the existing Mi-35 fleet reportedly contributed to India developing indigenous rotorcraft, such as the
HAL Prachand and
HAL Rudra, to perform multi-role high-altitude combat operations. The HAL Rudra was a modified version of
HAL Dhruv, free of any major modifications to the airframe to quickly create an armed variant for the Indian Army. The HAL Prachand is a purpose-built attack helicopter, expressly designed to overcome several operational shortcomings of prior attack rotorcraft. By 2010, the Indian Air Force was reportedly set to acquire 65 LCHs while the Indian Army's
Aviation Corps was to also procure 114 LCHs for its own purposes. During February 2020, the LCH was declared ready for production, the final assembly line has been established at HAL's Helicopter Division in Bangalore. Prime minister Narendra Modi conducted the handover ceremony of HAL Prachand to the Indian Armed forces in Jhansi. ==Operations==