B-2 to be upgraded to stealthy AESA radars

Northrop Grumman and Raytheon have reached three milestones in a program to modernize the B-2 stealth bomber's radar system with an advanced, more reliable antenna. These achievements represent significant progress towards initial flight testing of the radar.
In recent weeks, the B-2 radar-modernization team passed a final design review by the U.S. Air Force; delivered the first test model of the radar for integration, test and software development and completed a suite of tests that proves the hardware and software work together as one subsystem.

Northrop Grumman, prime contractor for the overall B-2 program, also leads the radar-modernization team that includes Raytheon, the radar-system provider. The effort will replace the current antenna with an active, electronically scanned array (AESA) antenna.

"Radar modernization is one of a series of programs Northrop Grumman and the Air Force are conducting to enhance the B-2's ability to respond to emerging worldwide threats as a key element of the military's network-centric warfare concept," said Gene Fraser, vice president and B-2 program manager at Northrop Grumman's Integrated Systems sector.

Originally posted by mxboy15u
The B-2 has no need to be supersonic, and its shape does not lend itself kindly to shockwaves. That is what the B-1 is for.