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P-40 Bronya


NATO: Long Track


Overview


P-40 radar

Forward view of ex-Polish P-40 radar system on display in a museum.
Source: VargaA - © GNU Attribution Share Alike license

Origin
Soviet Union
Type
Radar system
Entered service
1965
Status
In service
Development
Early 1960's
Developer
Soviet Union
Production
1961 - ?
Producer
Soviet Union
Number produced
Over 470
Designations
Long Track (NATO reporting name)
1S12 (GRAU index)
Bronya (nickname)
Russian for "iron pig"
Agata (nickname in Polish service)
Notable users
Soviet Union
Russia
Ukraine
East Germany
Egypt

Description


Introduction

The P-40 is a mobile radar system of Soviet origin. It was developed to support the 2K11 Krug (NATO: SA-4 Ganef) mobile SAM system, but has since then found use with various other systems. In the West the P-40 is known as "Long Track" since it is based on a modified, longer, version of the AT-T chassis.

Design

The P-40 is an iconic Soviet radar system that is easily identified. It is a very large tracked vehicle with large oval shaped mesh radar dish. The driver cabin is located at the front, the control cabin in the middle. The rear half is made up of the antenna mount, processing systems and generators. The crew consists of 6 people.

Sensors

The role of the P-40 is to detect targets at long range. The P-40 is based around a large UHF radar. The radar has a range of 375 km. To achieve a 360 degree coverage the radar rotates at 4 to 5 rpm. The P-40 can use its radar only while stationary. Emplacement time is 5 minutes. Several times during its service life the P-40 system received upgrades, such as an IFF system. Most upgrades are centered around cooperating and integrating with other radar systems and air defense command post systems.

Mobility

The tracked chassis is a modified version of the AT-T. It is longer and has an extra roadwheel on either side. The AT-T itself is derived from the T-54 tank chassis. The diesel engine allows for a maximum speed of 35 km/h. Although the tracked chassis allows the P-40 to traverse difficult terrain, the practical mobility is somewhat limited. The P-40 is large, heavy and has a high center of gravity.

Details


Facts P-40
General
Origin
Soviet Union
Type
Radar system
Crew
6 (commander, driver, 3 radar operators)
Dimensions
Weight
35 t combat load
Length
9.33 m
Width
3.21 m
Height
3.25 m in transport configuration
4.35 m in operational mode
Radar
Type
UHF 3D radar
Range
Up to 375 km
Coverage
360°
IFF system
1RL225 Tantalum-K1
Emplacement time
5 minutes
Displacement time
5 minutes
Equipment
Night vision
Yes, PNV-57 for driver
Radio
Yes, 2x R-123
Chassis
Chassis type
Tracked chassis, 7 roadwheels
Configuration
Drive sprocket front, idler rear
Suspension
Torsion bar
Automotive
Engine
A-416 V12 diesel
Power output
520 hp
Mobility
Speed
35 km/h on road
Range
200 km on road
Power to weight ratio
15 hp/t
Obstacle crossing
Ground clearance
0.42 m
Wall
0.5 m
Trench
2 m
Fording
1.1 m
Protection
Armor
None, softskin vehicle
NBC system
Yes

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