AEROSPACE

Northrop Grumman Unit Pays $2.2-Million Settlement: The payment was made by Grumman Data Systems Corp. to settle allegations that a former GDS executive knowingly overcharged the National Aeronautics and Space Administration for installing a supercomputer in 1989, the Justice Department said. (GDS and its former parent, Grumman Corp., were bought two months ago by Los Angeles-based Northrop Corp., which is now called Northrop Grumman Corp.) The Justice Department said the total settlement was $3.3 million, and it noted that GDS had earlier repaid $1.1 million to NASA. The former executive, Howard Broderson, is awaiting federal trial on criminal fraud charges.