Sea Applications

Several ECCOSORB® elastomers have been evaluated and qualified for use in the phased array antennas AN/SPY-1 is a US naval radar system manufactured by Lockheed Martin. The array is a passive electronically scanned system, it is a key component of the Aegis combat system. The system is computer controlled, using four complementary antennae in order to provide full 360 degree coverage. AN/SPY-1 for the Aegis Combat System installed in the Ticonderoga (CG-47) and Arleigh Burke (DDG-51)-class warships. ECCOSHIELD® conductive caulking compounds such as VY and VY-81 have also been used on the USS Russell (DDG-59) and others alike for shielding sensitive electronics.

Sea Based X-Band Radar (XBR)
Ship Based Dual S-Band CJR
ECCOSORB® GDS/SS6M was used to absorb stray signals bouncing around inside the TRIMM (transmit receive integrated microwave module) on the dual s-band radar systems for the ship based CJR program as well as the sea-based x-band XBR program. The TRIMM contains a highly integrated MMIC module designed and manufactured by Raytheon. This MMIC module contains MMIC power amplifiers, attenuators, low noise amps, phase shifters etc… and when integrated into the TRIMM stray signals caused system problems. XBR is an integrated surveillance and ballistic missile data collection system to support U.S. treaty monitoring activities that will be stationed at Adak Island in the Aleutian Islands of Alaska.

Multi-mission DDX / DDG-1000 Destroyer
ECCOSORB® BSR is currently being evaluated for use in the transmit/receive module area of the dual band radar system. A second application involves the multifunction mast (MFM) (seen at above right), which is the top most antenna aboard the DDG and operates at 5 classified frequencies in the UHF and VHF range. After sampling and testing by Raytheon’s engineers, ECCOSORB® MCS/SS6M(pink item above) was eventually chosen because of it’s broadband absorptive characteristics below 1 GHz. 30 parts in all; 6 corners and 24 midsections, roughly .750” thick and weighing 55 pounds each were molded from ECCOSORB® MCS and encapsulated in Raydel® around the MFM in the configuration above.

The AIMS antenna group is comprised of an antenna, antenna position programmer and a below-deck control unit used to locate and identify aircraft as friend or foe. The AIMS antenna consists of 64 radiating elements arrayed in a circle (at right in black) and uses ECCOSTOCK® SH around the ship’s mast. Unlike conventional IFF systems, which employ mechanically rotated antennas, the AIMS antenna elements remain stationary while the beam is steered electronically to scan a full 360 degrees around the ship. The beam can also be positioned selectively in any direction within microseconds and has a continuous scan rate of up to 90 revolutions per minute. AIMS is used on U.S. Navy CG 47 class cruisers, DDG 51 class destroyers, LHD 1 class helicopter assault ships, LPD 17 landing platform docks, and the CVN 68 class aircraft carriers.