Larger AWACS project, AWACS India, taking shape

CABS has been entrusted with Design and Development of Airborne Surveillance Systems. The envisaged system will have uniform surveillance performance over full 360 degree coverage. The front end of the Radar and the Identification Friend or foe (IFF) systems shall be housed in an ellipsoidal radome on top of the fuselage installed using pylons. In addition suitable mechanical structures to transfer the air loads will be designed and housed in the radome. The radome also houses parts of the liquid cooling system(piping structure) and ladder system for maintenance.

Diameter of the radome (of the order of) 10.0 m
Height of the radome(of the order of) 2.0 m
Radome shape Ellipsoidal
Weight of the radome Shells (about) 1500Kg
Electromagnetically transparent in S and L band
Withstand aerodynamic loads on the radome as per flight envelope of wide body aircraft.
The radome shall have lighting detectors/dischargers and should have surface which will not permit ice accumulations.

The radome shall have 4 shells (3 in case of design change) and shall be easy to install /de-install as seen in figure 2. 

The envisaged will have 4 faces arranged in a rectangular /square configuration (see Fig 3). The shells shall have suitable attachments to the antenna panels/supporting structures.

DRDO