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UMGT-1


AT-3 Orlan


Overview


UMGT-1

UMGT-1 on ammunition handling cart in front of Il-38 May ASW aircraft.
Source: A.A.Piragis @ www.fotopetropavlovsk.ru - © copyright lies with original owner

Origin
Soviet Union
Type
Lightweight torpedo
Entered service
Early 1980's
Status
In service
Development
1970's
Developer
Soviet Union - NGO Uran (now Gidropribor)
Production
1981 - present
Producer
Soviet Union
Russia
Designations
AT-3 Orlan (air launched variant)
E40-75A (NATO designation)
E40-79 (NATO designation)

Description


Introduction

The UMGT-1 is a lightweight torpedo of Soviet origin. It was developed as a more capable alternative to the AT-1 torpedo for use on the URK-5 Rastrub rocket ASW system. Aside from being delivered as payload on various types of ASW rockets the UMGT-1 can also be launched from helicopters and fixed wing aircraft. In that role it is designated AT-3.

Layout

The UMGT-1 has a conventional layout with the homing section and warhead in the nose, the battery in the middle and the engine and control fins at the rear. Being battery powered the UMGT-1 has a limited effective range. This should not be a problem because the ASW rocket or aircraft should drop the UMGT-1 near its intended target. A drawback of the battery is that it is seawater activated. As such the UMGT-1 cannot be used in fresh water.

Guidance

The UMGT-1 uses a passive and active sonar guidance system with an effective range of 1.5 km. The orignal UMGT-1 can only be used against submarines. The improved UMGT-1M can also target surface vessels.

Firepower

The UMGT-1 has a range of 8 km and a speed of 41 kt. Targets up to 450 meters below sea level can be engaged. The 60 kg warhead is more powerful than those used on many other lightweight torpedoes.

Launch platforms

The UMGT-1 carried as payload underneath the URK-5 Rastrub ASW rocket. Alternatively it is carried in the nose of the 533mm RPK-6 Vodopad or 650mm RPK-7 Veder ASW rocket torpedoes. The AT-3 version is air lauched by helicopters or Il-38 May ASW aircraft.

Users

The UMGT-1 was widely used by the Soviet navy on aircraft and the ASW rocket systems on destroyers, cruisers and submarines. It remains in use with the Russian navy. Foreign use is believed to be limited.

Details


UMGT-1

UMGT-1 on ammunition handling cart.
Source: www.quick-spinch.livejournal.com - © copyright lies with original owner

UMGT-1 and AT-3 Orlan

The UMGT-1 is an air launched lightweight torpedo that is carried as payload by ASW rocket systems. The aircraft launched version is designated AT-3 Orlan. The UMGT-1 can be identified by the four fins at the rear that extend beyond the diameter of the body and the pumpjet propulsion.

Variants of the UMGT-1

UMGT-1
Original version introduced in 1981 as payload for rocked based ASW systems.
UMGT-1M
Improved version of UMGT-1 that was introduced in 1991. It has a more powerful warhead, cheaper battery and the ability to engage surface vessels.
UMGT-1ME
Export version of UMGT-1M.
Facts UMGT-1 UMGT-1M
General
Origin
Soviet Union
Type
Lightweight torpedo
Launch platform
ASW rocket payload, aircraft, helicopters
Target platform
Submarines
Dimensions
Diameter
400 mm body
501 mm fins
Length
3.485 m
Weight
720 kg with parachute
Warhead
Type
60 kg explosive charge
Fuse
3.5 m fuse distance
Guidance
Homing
Active/passive acoustic seeker
Seeker range
1.5 km
Propulsion
Power source
Silver magnesium seawater battery
Propulsion
Pump jet impeller
Speed
41 kt
Range
8 km at 41 kt
Depth
Up to 450 m

Media


Related articles


Ilyushin Il-38

The AT-3 Orlan is one of the main anti-submarine weapons of the Il-38 (NATO: May) maritime patrol aircraft.

AT-2

The AT-3 Orlan is a smaller but more effective successor to the Soviet AT-2 aerial torpedo. Just as the AT-2 the UMGT-1 / AT-3 is carried on aircraft, helicopters and as payload for ASW rockets.