Mil Mi-8
Mil Mi-8 | |
---|---|
Mil Mi-8 of Baltic Airlines taking off at Peter and Paul Fortress in Saint Petersburg | |
Role | Transport helicopter (also several armed versions)
|
National origin | Soviet Union/Russia |
Manufacturer | Kazan Helicopter Plant
Ulan-Ude Aviation Plant |
Design group | Mil Moscow Helicopter Plant |
First flight | 7 July 1961 |
Introduction | 1967 |
Status | In service |
Primary users |
ca. 80 other countries, see Operators below |
Produced | 1961–present |
Number built | >17,000 and production continues today; world's most-produced helicopter |
Variants | Mil Mi-8M/Mi-17 |
Developed into |
The Mil Mi-8 (Russian: Ми-8, NATO reporting name: Hip) is a medium twin-turbine helicopter, originally designed by the Soviet Union in the 1960s and introduced into the Soviet Air Force in 1968. It is now produced by Russia.[not verified in body] In addition to its most common role as a
The Mi-8 is the world's most-produced helicopter,[1] with over 17000 units used by over 50 countries. As of 2015, when combined with the related Mil Mi-17, the two helicopters are the third most common operational military aircraft in the world.[2]
Design and development
The Soviet military originally argued against a new helicopter, as they were content with the current Mil Mi-4.[3] To counter this, Mikhail Mil proposed that the new helicopter was more of an update to new turbine engines rather than an entirely new helicopter, which persuaded the council of ministers to proceed with production. Due to the position of the engine, this enabled Mikhail Mil to justify redesigning the entire front half of the aircraft around the single engine.[citation needed]
The prototype, which was named V-8, was designed in 1958
During an official visit to the
This gave Mikhail Mil the power under the orders of Khrushchev to build the original two-engined helicopter, which for the first time in Soviet history would need purpose-built turbine engines, rather than those adapted from fixed wing aircraft (as in the Mil Mi-6 and the first prototype V-8) and an entirely new main rotor gear box that would be designed in-house for the first time. In May 1960, the order was given for Mikhail Mil to create his twin engine helicopter. The Sergei Isotov Design Bureau accepted the task of creating the engines.[citation needed]
The second prototype (still equipped with the one turbine engine as the Isotov engines were still under development) flew in September 1961.[citation needed]
Two months after the engines were completed by Isotov, the third prototype designated V-8A equipped with two 1,120 kW (1,500 shp) Isotov TV2 engines, made its first flight piloted by Nikolai Ilyushin on 2 August 1962, marking the first flight of any Soviet helicopter to fly with purpose built gas turbine engines.[4] The aircraft completed its factory based testing in February 1963.[citation needed]
The fourth prototype was designed as a VIP transport, with the rotor changed from four blades to five blades in 1963 to reduce vibration, the cockpit doors replaced by blister perspex slides and a sliding door added to the cabin.[4]
The fifth and final prototype was a mass production prototype for the passenger market. In November 1964, all joint testing had been completed and the Soviet government began mass production. Production started in the Kazan Production Plant, with the first aircraft completed by the end of 1965.[citation needed]
The Soviet military originally showed little interest in the Mi-8 until the
There are numerous variants, including the Mi-8T, which, in addition to carrying 24 troops, is armed with rockets and anti-tank guided missiles. The Mil Mi-17 export version is employed by around 20 countries; its equivalent in Russian service in the Mi-8M series. The only visible differences between the Mi-8 and Mi-17 are A) the position of the tail rotor (Mi-8 right side, Mi-17 left side), B) the shape of the exhausts (Mi-8 circular, Mi-17 oval), and C) Dust shields in front of engine air intakes for the Mi-17. Also Mi-17 has some improved armour plating for its crew. The naval Mil Mi-14 version is also derived from the Mi-8.[12]
The Mi-8 is constantly improving and the newest version still remains in production in 2024. However the second generation of the Mi-8 was changed to a tractor-tail rotor configuration as this configuration has increased yaw authority from the upwards advancing tail rotor blades into the downwash. The increase of the airspeed flowing over the rotor blades increases overall tail rotor effectiveness and yaw authority, whereas with the 'Pusher' tail rotor configuration the advancing rotor blade moves downwards. This decreases the airspeed across the rotor blade, reducing its overall effective yaw authority.[12] [citation needed]
Operational history
Finland
The Finnish Defence Forces and the Finnish Border Guard began using Mi-8s in the 1970s, with the Finnish Air Force receiving its first, serialed HS-2, on 28 May 1973, and the second, HS-1, on 31 May 1973. Six Mi-8Ts were obtained at first, followed by further two Mi-8Ts and two Mi-8Ps. Three of the helicopters were handed over to the Border Guard Wing. One of these was lost after sinking through ice during a landing in April 1982. It was soon replaced by a new Mi-8.
After their Border Guard service, the helicopters were transferred to the civil register, but shortly thereafter to the Finnish Air Force. In 1997 it was decided that all helicopters, including the remaining five Mi-8Ts and two Mi-8Ps, should be transferred to the Army Wing at Utti. All Mi-8s have now been retired. One Mi-8 is on display at the Finnish Aviation Museum in Vantaa, and one is at the Päijänne Tavastia Aviation Museum in Asikkala, near Lahti. The two final Mi-8Ts were given to Hungary in August 2011 with all the remaining spare parts.
Georgia
The Georgian air force started operating Mi-8 and Mi-17 helicopters from 1991 onwards. During the War in Abkhazia (1992–1993) Mi-8 helicopters were used by both sides. Several were shot down, the first being a Georgian civilian Mi-8T which was destroyed in Sukhumi by an RPG-7. On 14 December 1992, a Russian Air Force Mi-8T was shot down by a SA-14 missile near Lata.[13]
On another occasions Abkhaz Mi-8MTVs were shot down by Georgian forces, by SA-14 in one case and by RPG-18 in a second case, both during 1993.[13] In the final case, Georgian Mi-8MTV carrying civilian refugees was shot down, killing 25 people.[13] Georgian Air Force and Police currently operate about 20 Mi-8T/MTVs.[14]
Iraq
Mi-8s were employed by the former
South Sudan
On 21 December 2012, a
On 26 August 2014, a
Soviet Union
The Mi-8 family of helicopters became the main Soviet (and later Russian) helicopter, covering a large range of roles in both peace time and war time. Large fleets of Mi-8 and its derivatives were employed by both military and civil operators.[citation needed]
Large numbers of Mi-8 family helicopters were used during the Soviet–Afghan War during the 1980s. Its rugged construction allowed easier in-theater operations and maintenance. A large number of Mi-8s were lost with several shot down by enemy fire, with the Mi-8 and its derivatives being the main aircraft model lost by the Soviet Union in Afghanistan.[citation needed]
Between April and May 1986, Mi-8s were used in large numbers to drop radiation-absorbing materials into the No. 4 reactor of
Ukraine
On 16 August 2013, the
The Ukrainian Armed Forces used Mi-8MSB along with Mi-24s in operations against separatists in Eastern Ukraine during the
On 16 October 2023, Ukrainian Colonel General
United States
During the initial stages of
A number of Mi-8s and Mi-17s are used by US government agencies as of 2022.[33]
Yugoslavia
This section may contain an excessive amount of intricate detail that may interest only a particular audience. |
The
The Yugoslav Mi-8s' first combat operations were transport of Yugoslav People's Army troops and federal police forces to border crossings in Slovenia on 27 June 1991 during the
During combat in the winter of 1991 in the
After
On the other side, Mi-8 helicopters were also used as main air transport. The Croatian National Guard obtained its first on 23 September 1991, near Petrinja, when a Yugoslav Air Force Mi-8 made an emergency landing after being damaged by small-arms fire. A further 6 Mi-8T and 18 Mi-8MTV-1 helicopters were bought from ex-Warsaw Pact countries during the war, with 16 being used in active service, and remaining were used as source for spare parts. The remaining Mi-8Ts were retired from service in the Croatian Air Force after the war, while the Mi-8MTVs continued their service in 20th Transport Helicopter Squadron and 28th Transport Helicopter Squadron. The latter has been re-equipped with new Mi-171Sh helicopters bought from Russia.
The
The
During the
As of mid-2020, the
Others
- Canada – After Canada committed combat forces to fight the Taliban in Afghanistan, they realized their mobility depended on borrowed helicopter airlift. In 2007, the Minister of National Defence Peter MacKay announced the lease of 6 to 8 Mi-8s, particularly Kazan Helicopters Mi-17-V5s,[36] until the introduction of 6 interim CH-47Ds[37][38] in 2008 and later delivery of 15 new-build CH-47Fs in 2013 by the RCAF.[39]
- Poland – On 4 December 2003, a Polish Mi-8 crashed near Piaseczno while carrying Prime Minister Leszek Miller, ten other passengers and four crewmen. There were no fatalities. The cause of the accident was the icing of the engines. The pilot was accused of causing the crash, but he was found not guilty.[citation needed]
- Syria – During the Yom Kippur War of October 1973, Syria landed special forces troops behind Israel Defense Forces lines on the Golan Heights at Mt. Hermon, Tel Fares, Vaset, Nafach and Ein Zivan – A Dalve.[citation needed]
- Yemen—On 19 November 2023, Houthi rebels utilized a captured Mi-17 helicopter to conduct an air assault boarding and seizure of the Japanese owned cargo ship Galaxy Leader.[40][41]
Variants
This section needs additional citations for verification. (January 2021) |
Prototypes/experimental/low production rate
- V-8 (NATO – Hip-A)
- The original single-engined prototype.
- V-8A
- A twin-engined prototype, featuring TV2-117 turboshaft engines, the prototype underwent further modifications during its life.
- V-8AT
- Prototype of the Mi-8T utility version.
- Mi-8 (NATO – Hip-B)
- Twin-engined prototype.
- Mi-8TG
- Conversion to operate on LPG gas.
- Mi-18
- Prototype design, a modification of the existing Mil Mi-8. Two Mi-8s were extended by 0.9 meters (3 ft), the landing gear made retractable, and a sliding door added to the starboard side of the fuselage. The Mi-18s were used in the Soviet invasion of Afghanistan, and later used as static training airframes for pilots of the Mi-8/17.
Basic military transport/airframe
- Mi-8T (NATO – Hip-C)
- First mass production utility transport version, it can carry four UV-16-57 unguided rocket pods, (with hardpoints on two outrigger pylons, and is armed with one or two side-mounted PK machine guns.
- Mi-8TV
- Armed version of the Mi-8T.
- Mi-8TVK (NATO – Hip-E, a.k.a. Mi-8TB)
- Version used as a gunship or direct air support platform. Airframe modifications add 2x external hard points for a total of 6, and mount a flexible 12.7 mm (0.5-inch) KV-4 machine gun in the nose. Armament of 57 mm S-5 rockets, six UV-32-57 rocket pods, 551-lb (250-kg) bombs, or four AT-2 SwatterATGMs.
- Mi-8TBK (NATO – Hip-F)
- Armed export version, fitted with six launch rails to carry and fire Malyutkamissiles.
Command and electronic warfare
- Mi-8IV (NATO – Hip-G, a.k.a. Mi-9)
- Airborne command post version fitted with "Ivolga" system, characterized by antennas, and Doppler radar on tail boom.
- Mi-8PP (NATO – Hip-K)
- Airborne jamming platform with "Polye" (field) system. From 1980, the type was fitted with the new "Akatsiya" system and redesignated the Mi-8PPA. It is characterized by six X-shaped antennas on each side of the aft fuselage. Built to escort troop-carrying versions of this helicopter, and disrupt potentially nearby SPAAG radars, such as those of the Flakpanzer Gepard.
- Mi-8PD
- Polish airborne command post version.
- Mi-8SMV (NATO – Hip-J)
- Airborne jamming platform with "Smalta-V" system, characterized by two small boxes on each side of the fuselage. Used for protection of ground attack aircraft against enemy air defenses.
- Mi-8VKP (NATO – Hip-D, a.k.a. Mi-8VzPU)
- Airborne communications platform with rectangular communication canisters mounted on weapons racks and with two frame-type aerials above the rear fuselage.
Other military
- Mi-8AD
- Minelaying version with four VSM-1 dispensers.
- Mi-8AV
- Minelaying version with VMR-1 or −2 system for 64 or 200 anti-tank mines.
- Mi-8BT
- Mine-clearing version.
- Mi-8MB "Bissektrisa"
- Military ambulance version.
- Mi-8R (a.k.a. Mi-8GR)
- Tactical reconnaissance version with Elint system "Grebeshok-5".[42]
- Mi-8K
- Artillery observation, reconnaissance version.
- Mi-8SMT
- Military staff transport version, fitted with improved radio equipment R-832 and R-111.
- Mi-8SKA
- Photo-reconnaissance version.
- Mi-8SP
- Spacecraft tracking and recovery version.[43]
- Mi-8T(K)
- Photo-reconnaissance version.
- Mi-8TZ
- Fuel transport tanker version.
- Mi-8MTYu
- Only one was built and used by the AB "Kirovske". Intended for detection of re-entry vehicles, and small surface targets. In the nose radar antenna.
- Mi-8MSB
- Modernized passenger-transport version for civil aviation.[44]
- Mi-8MSB-V
- Modernized multipurpose helicopter for the Ukrainian Armed Forces.[45]
Civil
- Mi-8T (NATO – Hip-C)
- Civilian and military utility transport version, with accommodation for 24 passengers, fitted with tip-up seatsalong the cabin walls, circular cabin windows and large rear clamshell doors with a sloping hinge line. The Mi-8T is powered by two 1,677 shp (1,251 kW) Klimov TV2-117A turboshaft engines, giving the helicopter a maximum speed of 155 mph (249 km/h) at sea level.
- Mi-8P
- Civilian passenger transport version, with accommodation for between 28 and 32 passengers, fitted with square cabin windows, small rear clamshell doors with a vertical hinge line and a horizontally split rear airstair door in between; powered by two 1,700 hp (1,300 kW) Klimov TV2-117A turboshaft engines.
- Mi-8S "Salon"
- Civilian VIP transport version, with accommodation for between 9 and 11 passengers, equipped with a galley and toilet.
- Mi-8MPS
- Search and rescue version (operated usually in Malaysia for Fire and Rescue Department services).
- Mi-8MA
- Polar exploration version for use in the Arctic.
- Mi-8MT
- Flying crane version.
- Mi-8AT
- Civilian transport version, fitted with two improved TV2-117AG turboshaft engines.
- Mi-8ATS
- Agricultural version, fitted with a hopper and spray bars.
- Mi-8TL
- Air accident investigation version.
- Mi-8TM
- Upgraded transport version, fitted with a weather radar.
- Mi-8TS
- Hot and high desert version.
- Mi-8VIP
- Deluxe VIP transport version, with accommodation for between 7 and 9 passengers.
- Mi-8PA
- Modified version for Japanese regulations. One only was built, in 1980. It was used by Aero Asahi for heavy material transport in a mountainous region. It was retired in 1993 and later moved to the Tokorozawa Aviation Museum.
Operators
- Albania[48]
- Algeria[46]
- Angola[46]
- Argentina[46]
- Armenia[46]
- Azerbaijan[46]
- Belarus[46]
- Bhutan[46]
- Bosnia and Herzegovina[46]
- Bulgaria[46]
- Burkina Faso[46]
- Cambodia[46]
- Canada (leased from SkyLink Aviation)[49]
- China[46]
- Colombia[46]
- Congo-Brazzaville[46]
- Congo-Kinshasa[46]
- Croatia[46]
- Cuba[46]
- Czech Republic[46]
- Djibouti[46]
- Egypt[46]
- Eritrea[46]
- Ethiopia[46]
- Georgia[46]
- Germany[50]
- Guinea[46]
- Guinea-Bissau[51]
- Hungary
- India
- Indonesia[52]
- Iran[46]
- Iraq[46]
- Kazakhstan[46]
- Kyrgyzstan[46]
- Laos[46]
- Libya[46]
- Lithuania[46]
- Maldives[46]
- Mexico[46]
- Mali[46]
- Moldova[46]
- Mongolia[46]
- Mozambique[46]
- Nepal[46]
- North Korea[46]
- Pakistan[46]
- Peru[46]
- Poland[46]
- Romania[53]
- Russia[46]
- Serbia[46]
- Slovakia[46]
- Somalia
- Sudan[46]
- Syria[46]
- Transnistria: 5[54][55]
- Turkey[56]
- Turkmenistan[46]
- Tajikistan[46]
- Ukraine[46]
- United States of America[33]
- Uzbekistan[46]
- Venezuela[46]
- Vietnam[46]
- Houthi movement* (captured).[40]
Former operators
- Bangladesh[57]
- Czechoslovakia[58]
- East Germany[59]
- Guyana[60]
- Latvia[61]
- Serbia and Montenegro[62]
- Serbian Krajina[46]
- Soviet Union[63]
- Yugoslavia[64]
Specifications (Mi-8MT)
Data from
General characteristics
- Crew: 3 (pilot, copilot, flight engineer)
- Capacity: 24 passengers or 12 stretchers and seat for 1 medical attendant or 4,000 kg (8,800 lb) on internal/external hardpoints
- Length: 18.4 m (60 ft 4 in)
- Height: 5.5 m (18 ft 1 in)
- Empty weight: 7,100 kg (15,653 lb)
- Gross weight: 11,100 kg (24,471 lb)
- Max takeoff weight: 13,000 kg (28,660 lb)
- Fuel capacity: 3,700 L (980 US gal; 810 imp gal)
- Powerplant: 2 × Klimov TV3-117MT turboshaftengines, 1,454 kW (1,950 hp) each
- Main rotor diameter: 21.29 m (69 ft 10 in)
- Main rotor area: 356 m2 (3,830 sq ft) *Blade section: NACA 23012[66]
Performance
- Maximum speed: 250 km/h (160 mph, 130 kn)
- Cruise speed: 240 km/h (150 mph, 130 kn)
- Range: 495 km (308 mi, 267 nmi)
- Ferry range: 960 km (600 mi, 520 nmi)
- Service ceiling: 5,000 m (16,000 ft)
Armament
- 4,000 kg (8,818 lb) of disposable stores on six ATGMs and one or two side-mounted PK machine guns
See also
Related development
Aircraft of comparable role, configuration, and era
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