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DRDO AEW&CS

The DRDO Airborne Early Warning and Control System (AEW&CS) is a project of India's Defence Research and Development Organisation to develop an airborne early warning and control system for the Indian Air Force. It is also referred to as NETRA Airborne Early Warning and Control System (AEW&CS).

In 2003, the Indian Air Force (IAF) and DRDO carried out a joint study of the system-level requirements and feasibility of development for an Airborne Early Warning and Control (AEW&C) system. The Government then approved the project for the development of the AEW&C system by DRDO. Primary responsibility for the project was with Centre for Airborne Systems (CABS), which led the design, system integration and testing of the system. Electronics and Radar Development Establishment (LRDE) was responsible for the design of the radar array. The Defence Electronics Application Laboratory (DEAL), based in Dehradun, was responsible for the Data Link and Communication Systems for AEW&CS.

The DRDO AEW&CS programme, worth 1,800 crore (equivalent to 50 billion or US$590 million in 2023), aims to deliver three radar-equipped surveillance aircraft to the Indian Air Force. The aircraft platform selected was the Embraer ERJ 145. As per a contract signed in 2008, Three ERJ 145 were procured from Embraer at a cost of US$210 Million, including the contracted modifications to the airframe including features like in-flight refueling system, SATCOM capability, increased electrical and cooling capacities, and multiple aerodynamic and structural changes. The project goal was to deploy these AEW&C aircraft by 2013. India's sole previous effort to develop an AEW&C system was the Airborne Surveillance Platform, but the programme, codenamed Airavat, was ended after the only test-bed crashed. The AEW&C project aimed to supplement the larger and more capable EL/W-2090 AWACS acquired by the IAF from Israel. Three EL/W-2090 systems have been ordered, with follow-on orders of 3 more expected in 2010. Apart from providing the IAF with a cheaper and hence, more flexible AEW&C platform as a backup to its more capable EL/W-2090 class systems, the DRDO AEW&C project aimed to develop the domestic ability to design and operationalise airborne surveillance platforms.

The first round of modifications to the first EMB-145 fuselage for India's early warning aircraft were made in March 2011 in preparation for integration with the Indian-designed antenna.

In June 2010, it was reported that the Active Array Antenna Unit (AAAU), developed by DRDO's Centre for Airborne Systems (CABS), was to be integrated into the modified EMB-145 aircraft. First test flight of the system was expected in early 2011.

The first modified fuselage platform was handed over to DRDO by Embraer in February 2011. Ground and flight tests of the aircraft were to be followed by installation of radar and other equipment. The first fully modified EMB-145i Aircraft with the antenna and its electronic payload made its maiden flight on 6 December 2011 at Embraer facilities at Sao Jose dos Campos in Brazil with about 1000 Mission System Components provided by CABS, DRDO. These included the critical item – AESA (Active Electronically Scanned Array) Radar Antenna developed by DRDO and certified from ANAC, International FAR Certification Agency at Sao Jose dos Campos in Brazil. Some of the sensitive advanced systems were replaced with dummy equipment of equivalent size and weight. These were to be integrated later in India following flight certification. A two-year certification period is expected. DRDO is expected to receive the next two aircraft platforms to start integration by mid-2012.

Maiden flight of the second fully modified aircraft for the Indian Airborne Early Warning and Control System (AEW&C) was held at 1930 IST on 4 April 2012 at the San Jose dos Campos in Brazil. The necessary mission systems and components including the dummy AAAU (Active Antenna Array Unit) are successfully fitted onboard Embraer EMB 145I aircraft.

As reported in March 2015, the completion timeline of the project was shifted to December 2015 after multiple delays.

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Indian early warning and control system project
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