Air Force Station Yelahanka, Bengaluru

20th (Wed) - 24th(Sun), February 2019

Combat Vehicles Research & Development Establishment


About Lab

Combat Vehicles Research & Development Establishment (CVRDE) has its origin as the Chief Inspectorate of Mechanical Transport Establishment, set up at Chaklala (now situated in Pakistan) in 1929. After Independence of India, this establishment was moved to Ahemednagar to form Technical Development Establishment (TDE – Vehicles). It was later transformed into Vehicle Research & Development Establishment (VRDE), Ahemednagar.

In 1965, when a decision was taken for manufacturing Vijayanta Tank, the Heavy Vehicles Factory was set up at Avadi. To render R&D support to HVF, a detachment of VRDE was established as a nucleus at Avadi.

In 1969, a need was felt to set up an independent DRDO laboratory for handling tasks relating to Armoured Fighting Vehicles. Accordingly, in March 1975 the detachment of VRDE Avadi was re-designated as Combat Vehicles Research & Development Establishment (CVRDE).

Based on CVRDE’s expertise in transmission system, CVRDE has ventured into the system development for aircraft programme. Thus expertise in high speed Gear box has contributed the realization of maiden project on Design & Development of Aircraft Mounted Accessory Gear Box (AMAGB) for the Light Combat Aircraft (LCA). Subsequently other critical LRUs viz., Aircraft filters, Power Take—Off (PTO) Shaft were developed. Presently all LCA-Tejas are flying with indigenous AMAGB, Hydraulic filters. Indigenous PTO shaft is under flight trials. Based on the successful development of these products, CVRDE has taken indigenous development of Aircraft Bearings and 5 kW BLDC Generator for LCA. CVRDE has also developed Landing Gear for RUSTOM II UAV and currently working on Landing gear system for SWIFT.

Shri V Balamurugan

Shri V Balamurugan, Scientist ‘G’, has been appointed as Director, Combat Vehicles Research and Development Establishment (CVRDE) Chennai, wef from 1 May 2018. Prior to this, he was working as Addl Director (Arjun).

Shri V Balamurugan obtained his Bachelor’s degree in Mechanical Engineering from College of Engineering, Guindy, in 1984, Master’s in Industrial Metallurgy from Indian Institute of Technology, Madras in 1987, and Master’s in Business Administration in Technology Management from Bharathidasan Institute of Technology, Trichy, in 1999. He had a brief stint as Management Trainee at Steel Authority of India Ltd (SAIL) before joining DRDO as Sc ‘B’ in CVRDE in 1987.

Shri Balamurugan has more than three decades of experience in the development programme of Arjun Main Battle Tank (MBT) wherein he played an active role in the Pre-Production Series (PPS) of Arjun with focus on establishing the produceability and development of production agencies. He guided and developed BHEL, Bhopal, as one of the production agencies as part of the PPS programme. He successfully engaged major research institutions, viz., Welding Research Institute (WRI) and Central Manufacturing Technology Institute (CMTI), in developing production documents during this phase.

As Project leader Arjun, he contributed immensely towards transfer of technology of Arjun to various stakeholders such as Heavy Vehicles Factory (HVF), DGQA, EME and the users. He also provided technical expertise and guidance during the production of hull and turret structures, assembly of chassis automotive system, assembly of turret and weapon system, integration as a tank and its field evaluation before issue. This resulted in free-flow production and operationalization of two regiments (124) Arjun Mk I. During the course, he successfully coordinated and completed various major activities such as medium fording demonstration, conduct of Accelerated Usage Cum Reliability Trials (AUCRT) on two selected production tanks and comparative trials. Under his leadership, a third party auditing of Arjun, by expert tank manufacturer from outside India, was completed successfully involving DRDO labs, HVF, DGQA and the user for both design and trials. He was instrumental in transfer of AHSP of Arjun MBT Mk I to DGQA.

As Project Director, Arjun MBT Mk II, he was instrumental in interacting with the users for finalisation of upgrades and ensured fast track decision-making through Arjun Core Committee. He extensively coordinated for the successful DRDO and the user’s trials of Arjun MBT Mk II resulting in Indian Army obtaining AON from DAC for two regiments of Arjun MBT Mk II.

As Additional Director (ToT), he was instrumental in coordinating and conducting of ToT of CCPT and other products. He also spearheaded formulation of trial directives and its successful conduct on various products such as Arjun MBT Mk I and Mk II, 400 hp power pack for BMP II, 1000 hp engine for T72, IAVS systems, etc.

He is the recipient of the Lab Scientist of the Year Award, Lab Technology Group Award, and DRDO Performance Excellence Award.

He has also received Commander’s Commendation Card in recognition to his devotion to duty / distinguished service. He is a member of the Society of Automotive Engineers (India) and the Indian Institute of Welding. He has guided more than 10 student projects.

successful conduct on various products such as Arjun MBT Mk I and Mk II, 400 hp power pack for BMP II, 1000 hp engine for T72, IAVS systems, etc.

He is the recipient of the Lab Scientist of the Year Award, Lab Technology Group Award, and DRDO Performance Excellence Award.

He has also received Commander’s Commendation Card in recognition to his devotion to duty
/ distinguished service. He is a member of the Society of Automotive Engineers (India) and the lnd)an lns tute of Welding. He has guided more than 10 student projects.


Products inducted into services

Armoured Patrol Car (Scout Car)

Armoured Patrol Car was developed on Nissan 1 ton chassis for escort duties of ҂Ҡvehicle convoys in insurgency prone areas.

Armoured Recovery Vehicle

Armoured Recovery Vehicle (ARV) was designed adapting the basic Vijayanta chassis to replace Sherman and Centurion ARVs. Lifting capacity is of more than 8 ton and pulling capacity is more than 20 ton.

130mm SP Gun – CATAPULT

The Self Propelled Medium Artillery Gun was developed on Vijayanta Chassis for firing both HE and AP ammunitions. Maximum range of the gun is more than 25 km.

Carrier Mortar Tracked on BMP-2

Designed to mount and fire an 81mm mortar from within the vehicle. Number of rounds of mortar ammunition is stowed in the vehicle. CMT is also equipped with a 84mm Rocket Launcher and 7.62mm machine gun for aerial targets. Based on an Army indent, Ordnance Factory, Medak, produced these vehicles and inducted into the Services.

Products Under Production

Bridge Layer Tank (BLT – T-72)

BLT ֠T-72 is a variant of T-72 M1 tank and has an option to carry long Military Load Classification 70 bridge, which can be used to cross canal/stream/river by all tracked & wheeled vehicles in service with Indian Army.

Combat Improved Ajeya Tank

CI-Ajeya tank is the modernized version of T-72. The tank capability was enhanced with Global Positioning System (GPS), Explosive Reactive Armour (ERA) and Integrated Fire Detection and Suppression System (IFDSS) to the level of contemporary combat vehicles. The upgradation of the tank is being done by HVF, based on CVRDE design and issued to the Army for use.

Arjun Main Battle Tank

Designed to Indian Armyӳ most stringent specification & operational conditions, Arjun MBT represents the translation of advanced design into a reliable and effective weapon system to meet the varied threats. Adopting most advanced technologies, Arjun MBT offers the troops in the battlefield, state-of-the-art tank with superior firepower, high mobility, and excellent protection. After successful completion of exhaustive automotive & firing trials, Arjun MBT, produced at HVF, was already inducted into the Services. Further, the Indian Army is likely to place additional production order on HVF, Avadi, soon for Arjun MBT Mk-II.

Armoured Ambulance

Armoured Ambulance Tracked vehicle was developed by CVRDE on a modified BMP-II chassis for evacuation of battle field casualties with excellent medical care. It has been designed with provisions to carry four stretcher patients or two stretcher and four sitting patients or eight sitting patients with two medical attendants. Equipped with Defibrillator for continuous ECG monitoring, automatic external defibrillation and pacing, NIBP and pulse oxymetry, ventilator for artificial ventilations, suction unit for removal of abdominal fluids, refrigerator and conventional medical equipments. It is air conditioned with 3 ton AC for crew comfort. Ordnance Factory, Medak has manufactured andissued production vehicles to Army.


A state-of-the-art 155mm Self Propelled gun named ԂHIMԠhas been developed by CVRDE by integrating the T6 turret of M/S LIW, South Africa, onto the Arjun derivative chassis & automotive system. After successful field trials, Army has recommended induction of this equipment into service. M/S BEML has been nominated as the nodal agency for the production of BHIM. M/S BEML is to manufacture BHIM chassis and integrate with T6 turret.

Technology Demonstrated Products


Ex. Tank is a combination of Upgraded T-72M1(Ajeya) Chassis and the State-of-the-Art Arjun MBT weapon system to provide superior Fire power, better Mobility & excellent Protection with lesser weight and at affordable cost.


Arjun BLT is a variant of Arjun MBT and has an option to carry long Military Load Classification 70 bridge. This can be used to cross canal/stream/river by all tracked & wheeled vehicles in service with Indian Army.


CCPT was successfully designed and developed for accomplishing all tactical / technical fire control functions to achieve effective deployment of Self-Propelled (SP) Artillery guns . The importance of this project is that it is the first of its kind with tracked chassis housing Artillery Combat Command and Control Systems (ACCCS) for accomplishing fire control functions of all the versions of Artillery guns, both towed & self propelled versions. The CCPT is a re-engineered BMP vehicle with an extended chassis and additional bogie wheels, thereby achieving an improved 15 cubic metre/m3 of space in the equipment compartment. Hence, CCPT serves as a common platform for command post functions of all the Indian Artillery guns. The satisfactory performance of CCPT during summer desert trials in 2009 culminated into user recommendation for introduction into service. Based on the successful outcome of subsequent confirmatory trials, the Users proposed to release the production indent for CCPT vehicle in the near future.


Arjun Catapult has been successfully designed and developed as per the requirement of the Indian Army, by integrating the 130 mm (SP) Catapult Gun on the modified Arjun Chassis and Automotive System. The performance of the first prototype has been successfully demonstrated to the User during the Automotive and Firing trials in 2012. However, further improvements are under incorporation to firm-up the configuration for production.

Aircraft Products


Aircraft Mounted Accessory Gear Box (AMAGB) is a critical Line Replacement Unit (LRU) and forms a very important part of Secondary Power System (SPS) of LCATejas. AMAGB was first time designed and developed in the country with important technical features, such as, lightweight, compact, high speed, single input and multioutput gearbox of aeronautical standards. The gearbox has self-contained lubrication system which ensure the safe functioning of the gearbox.

Arjun MBT Training Simulators

Training simulators were designed and developed by CVRDE to meet the various levels of training required to familiarize the Arjun MBT gunner, commander and driver on hardware controls and switches present in their respective compartment. Simulators impart exhaustive and extensive training in a cost effective way without using the actual MBT. The emergencies/ situations, which are not possible in actual tank training can be experienced through simulators and solutions to realize/overcome the problems can be imparted to the trainee during the exercise. Based on the training needs, the following simulators were, designed and developed indigenously by CVRDE:

  • Classroom Trainer for Gunner and Driver
  • Desktop Trainer for Gunner
  • Gunnery Training Simulator
  • Turret Simulator
  • Driving Simulator and
  • Troop Training Simulator


CVRDE is carrying out an UGV project entitled “MUNTRA”, involving the conversion of a BMP class of vehicles into teleoperated & autonomous vehicles.

  • The MUNTRA UGV is the first unmanned tracked vehicle from DRDO and is designed to be configurable for different missions. The UGV developed has a very diverse range of technologies and systems incorporated in it, including electro-optics, sensor fusion, electro-mechanical actuators and communication systems.
  • Various innovative methodologies are implemented in the MUNTRA UGV, including dynamic power management to ensure optimum use of the available power and software design to facilitate interoperability between UGV systems.
  • Indigenously developed GIS is extensively used in the MUNTRA UGV for planning missions and for recording the details of the paths traversed.
  • Various failsafe mechanisms are incorporated in the MUNTRA UGV to ensure safe and error free operations.
  • The MUNTRA UGV was developed conforming to various military standards for both hardware and software designs.

Technologies Developed for Autonomous Navigation of Unmanned Ground Vehicle(UGV)


For a vehicle to navigate in autonomous, the environment around the vehicle should be explored using sensors that provide adequate information about the environment. CVRDE has developed obstacle detection system using stereo vision and 2D LIDAR (Light Detection And Ranging).


Advanced Automotive Electrical System (AAES)

  • Implementation of In-vehicle networked tank using MILSTD 1553B
  • Embedded System control for Hull Management in RTOS environment
  • Integrated Electronic Touch screen Dashboard with multi-page configuration
  • Online data logging and BITE capability for analysis of Automotive Trial Performance

This system has successfully covered field trials of more than 2500 km in the desert terrain.


1. CAN Bus Based Drive-By-Wire System for Commercial Vehicles

The major functions of the CAN bus based Drive-by-Wire system are Automatic Transmission Control, Automatic Lighting Control and Intelligent Display unit. In case of any electrical/solenoid failure, this system displays a warning message and the transmission will come to safety shift. In this Drive-by-wire system, sensors and controllers are interconnected via CAN bus. This system has been integrated into an Ashok Leyland chassis and successfully completed around 2000 km of trial runs.

Transmission Controller For NAT 500 Automatic Transmission

NAT 500 automatic transmission controller has been designed and developed as a Spin-off of Indigenous Transmission of AFV. An automatic gear controller for this transmission has also been developed. The Direction and Gear Selector unit was designed in house. This controller has been designed with Data logging facilities. The logged data can be used for diagnostic purposes using custom built software. This controller has been extensively tested in a test bed and then integrated on an Ashok Leyland test chassis. The development of the controller was culminated to a successful completion, after conducting the road trials of the test chassis satisfactorily.

Coming Soon