Martin Marietta Corp. yesterday elected a new president and chief operating officer to succeed Laurence J. Adams, who will retire in April after 38 years with the Bethesda-based company.

The new president, Norman R. Augustine, has been with Marietta for nine years and served since September as executive vice president for information management technology, which is the fastest-growing area of the diversified aerospace and high-technology company.

Augustine, 50, has been in the aerospace industry for 27 years. He joined Marietta in 1977 and was president of Martin Marietta Denver Aerospace from 1982 to 1985.

A systems engineer with a background in electronics and aerodynamics, Augustine has bachelors and masters degrees from Princeton University. He is past chairman of the board of visitors of Princeton's department of aeromechanical engineering, and is chairman of the advisory board of the Massachusetts Institute of Technology's Lincoln Laboratory.

Before joining Marietta, Augustine served as undersecretary of the Army from 1975 to 1977. Previously, Augustine held executive engineering positions with McDonnell Douglas Corp. and LTV Aerospace Corp.

Marietta completed a sweeping restructuring last year that was touched off by its costly defense against a takeover attempt by Bendix Corp. The makeover has turned Marietta into an aerospace and high-tech powerhouse.

"We've just been through a significant restructuring," Augustine said yesterday. "And we now have a number of business opportunities, such as programs for the National Aeronautics and Space Administration, the Defense Department, and major government and commercial opportunities."

Adams, who will continue as a director, was president and a director of Marietta since 1983.