Mi-17 Hip-H

Developed from the basic Mi-8 airframe, the Mi-17 incorporates larger Klimov TV3-117MT engines, along with enhanced rotors and transmission derived from the Mi-14, enabling greater load capacities through fuselage improvements. Optional 1,545 kW (2,072 shp) Isotov TV3-117VM engines are available for operations in hot and high conditions. More recent export models feature the Klimov VK-2500 engine, a version of the Klimov TV3-117 with FADEC control optimized for high-altitude performance, delivered to regions including China and Venezuela for high mountain operations. Officially, the designation Mi-17 is for export; the Russian armed forces refer to it as the Mi-8MT. Distinguishing features of the Mi-17 include a tail rotor positioned on the port side (as opposed to the starboard side on the Mi-8), the inclusion of dust shields in front of the engine intakes, and shorter engine cowls than those on the TV2-powered Mi-8, which do not extend as far over the cockpit and feature an opening for a bleed air valve outlet forward of the exhaust. The Mil Mi-17 family was introduced in 1975 with the Mi-8M, and continues in production as of 2024. Modifications may include a new large door on the right side, an improved APU built in the Czechia, and Kevlar armour around the cockpit area and engines, with some models featuring a loading ramp in place of the standard clamshell doors.

Armament

Some variants of the Mi-17, particularly the Mi-8AMTSh and Mi-171Sh, feature six hardpoints for mounting disposable stores, enabling them to carry a diverse range of weaponry. These can include unguided rockets, such as the S-8, and gun pods like the UPK-23-250. Advanced versions, such as the Mi-171SH-HV and Mi-171SH-VN, expand their offensive capabilities with anti-tank guided missiles, such as the Ataka, and precision-guided munitions. Defensive armament typically includes one or two window-mounted PK machine guns. Additionally, the hardpoints can accommodate drop tanks to extend the helicopter's operational range or carry up to 4,000 kg (8,800 lb) of bombs.

Operational History

The Royal Cambodian Air Force deployed its Mi-17s during government offensives, with ten airframes operational by 1994, five of which were converted into helicopter gunships armed with 57 mm S-5 rocket pods to support ground forces against Khmer Rouge positions. Similarly, in 1999, the Indian Air Force utilized Mi-17s during the Kargil War, though the loss of one Mi-17 and an escorting MiG-21 to Pakistani air defenses led to a shift towards fixed-wing aircraft for attacks. The Sri Lanka Air Force also relied heavily on the Mi-17 in its conflict against the LTTE, incurring the loss of seven helicopters in combat and airport attacks. In other theaters, freelance pilots like Neall Ellis operated Mi-17s to support the Sierra Leone government during the Sierra Leone Civil War. US Army Special Forces in Afghanistan also used CIA-operated Mi-17s during the initial stages of Operation Enduring Freedom, demonstrating the helicopter's versatility and widespread utility across diverse operational environments.

Variants

Main Variants:

• Mi-8MT: The basic updated version of the Mi-8T, distinguished by its more powerful Klimov TV3-117MT turboshaft engines and the provision for external stores racks.

• Mi-8MTV: A hot and high conditions variant, featuring Klimov TV3-117VM high-altitude turboshaft engines, enabling operations at a maximum ceiling of 6,000 m.

• Mi-8MTV-5: A military utility transport helicopter equipped with a loading ramp, an additional door, a new "dolphin nose," and Klimov TV3-117VM turboshaft engines.

• Mi-8AMT: A slightly modified version of Kazan's Mi-8MTV, built in Ulan-Ude Aviation Plant, initially powered by TV3-117VM engines and later optionally by VK-2500 engines, with an arctic version entering production in 2020.

• Mi-8AMTSh: An armed assault version of the Mi-8AMT capable of carrying a wide range of weapons, enhanced with aramid fiber plates, and featuring a new large door, as well as an optional loading ramp.