Raytheon Co. [RTN] named William Hart to leads its space business.

Hart, who joined Raytheon in 1975, was named vice president for Space Systems. He succeeds Brian Arnold, who was appointed vice president for space strategy.

In his new role, Hart will lead and manage the Space Systems suite of programs, establishing plans and strategies, setting the vision and direction of the organization, and leading change-management efforts, Jon Jones, president of Raytheon Space and Airborne Systems, said.

Before his promotion, Hart had been a program management executive at the company’s Integrated Defense Systems business.

Arnold, a retired Air Force lieutenant general, is a former commander of the Space and Missile Systems Center at Los Angeles Air Force Base. In that role, he managed research, design, development, acquisition and sustainment of space launch, command and control, missile and satellite systems.

In his new capacity, Arnold will be responsible for understanding the future needs of the customer and providing viable solutions to address them. He will drive the development of plans to expand core markets, working closely with the customer and scientific communities.