Robert T. Rogers, an electrical engineer who retired from Fairchild Systems, a defense contractor, in the early 1990s, died Aug. 21 at Buckingham’s Choice, a retirement community in Adamstown. He was 82.

The cause was complications from pneumonia, said his brother, David Rogers. Dr. Rogers had lived in Boyds for about three decades before moving to Adamstown in 2011.

Dr. Rogers specialized in space systems and worked for RCA before joining Fairchild Systems. After his retirement, he did engineering work for Booz Allen Hamilton.

Robert Taylor Rogers was born in Cleveland. He received a bachelor of arts degree in 1957 and a bachelor of science degree in electrical engineering in 1961, both from Duke University.

He received a master of science degree from Clemson University in South Carolina in 1965 and a PhD from the University of Delaware in 1972, both in electrical engineering. Early in his career, he taught at Pennsylvania State University’s campus in Harrisburg.

He belonged to St. James’ Episcopal Church in Potomac, where he assisted with the recording of choral and organ recitals.

His first wife, the former Sara K. Ellet, died in 1994 after 32 years of marriage. His second wife, Barbara L. Wilson Watterson, died in 2005 after nine years of marriage. Survivors include two stepdaughters, Kathy Houser of Cape Coral, Fla., and Kerry L. Turner of New Windsor, Md.; his brother, David T. Rogers of Fairfax County; and four grandchildren.

— Emily Langer