Tupolev Tu-142 'Bear-F'

Development

The Tu-142 programme developed a land-based aircraft able to search for missile-armed submarines far from shore. Work began in the early 1960s, drawing on the maritime reconnaissance branch of the Tu-95 family. The prototype flew in 1968 and the type was accepted into service in December 1972.

The naval airframe was substantially revised. It had a longer fuselage ahead of the wing, a redesigned wing with greater leading-edge camber and double-slotted flaps, and a rudder with a larger chord. Chord is the distance from a surface’s leading edge to its trailing edge. Early aircraft used unusually large twelve-wheel main landing-gear bogies; subsequent production returned to four-wheel bogies.

Production began at Kuibyshev, now Samara. The Taganrog plant built Tu-142 aircraft from 1973 to 1994, producing more than 100 across several versions. Improvements centred on the search equipment, avionics and crew accommodation rather than changing the aircraft’s basic anti-submarine purpose.

Airframe, propulsion and crew

The long fuselage, swept wing and four large engine installations retain the Bear family’s distinctive appearance. Each NK-12 engine drives two propellers on the same axis, rotating in opposite directions. The propulsion arrangement combines turbine engines with propellers, rather than the jet exhaust providing all the thrust.

The Tu-142M moved the magnetic detector from the tailplane tips to a boom at the top of the fin and removed the rear observation blisters. The M measures 53.08 metres over its nose refuelling probe and has a normal crew of ten. Later improvements raised the flight-deck roof and improved accommodation. These are changes within the naval family; the shorter Tu-95MS bomber has a different crew complement.

Finding a submarine

The original Tu-142 used the Berkut-95 search-and-sighting system. Its equipment combined a surface-search radar, magnetic detection and information from sonobuoys. A sonobuoy is dropped into the water to listen for underwater sound and transmit information back to the aircraft. These tools answer different questions: a radar can search the surface, while acoustic information helps investigate a submarine below it.

On early aircraft, the magnetic detector was carried at the tailplane tips. Later aircraft placed it in a fin-tip boom. A magnetic anomaly detector senses a local change in the magnetic field; it is a separate sensor from the radar and the sonobuoys.

The Tu-142MK uses the Korshun search system. The Tu-142MZ introduced the Zarechye search-and-sighting system and revised electronic-countermeasures equipment. The MZ also has a conspicuous sensor fairing beneath the nose, absent from the MK. The equipment standard matters when comparing two aircraft carrying the same broad Bear-F reporting name.

Armament and mission equipment

The original Tu-142 carried sonobuoys and weapons in two bays in the rear fuselage. Its loads included torpedoes, sea mines and nuclear or conventional depth charges. A tail gun position provided defensive armament. Equipment and loads differ between later versions.

The search equipment and weapons form different parts of the mission: finding a possible submarine, establishing its position and attacking it are separate tasks. A type’s carriage capability does not reveal what a particular aircraft has aboard, and a radar track alone cannot establish that it has used a weapon.

Operational use before 1998

Soviet naval aviation operated specialised members of the Bear family. The Tu-95RTs Bear-D carried out maritime surveillance and targeting, the Tu-142 Bear-F undertook anti-submarine patrols, and the Bear-J branch provided submarine communications. Tu-142 anti-submarine aircraft served with the Northern and Pacific Fleets.

During the Cold War, naval Bears deployed to locations including Cuba, Angola and Cam Ranh Bay in Vietnam. Tu-142 deployments to Cuba began in 1983, extending Soviet observation of naval activity in the North Atlantic and the approaches to the south-eastern United States. Long endurance and access to distant airfields made maritime aircraft useful well beyond their home coastlines.

For the 1998 setting, distinguish the anti-submarine MK and MZ standards from the MR relay. A similar silhouette can conceal a different task and equipment fit. The Bear-F is also distinct from the Tu-95MS strategic missile carrier, despite their shared ancestry.