Robert E. Dougherty, 50, head of the aircraft equipment branch of the Naval Air Systems Command, died of cancer Monday at Georgetwon University Hospital.

With the Comman since 1965, he was responsible for pricing major aircraft. His responsibilities extended to all phases of the systems acquistion process, including the Phoenix Missile and the LAMPS aircraft.

Mr. Dougherty contributed in the areas of multi-year procurement and incentive contracting. He received many awards and lectured at several area colleges.

He was born in Girardville, Pa. He served with the U.S. Army and was sent to Korea during the conflict there. He came to the Washington area in 1954, after completing his Army service.

Mr. Dougherty worked for several commercial and government organization before joining the Naval Air Systems Command.He earned a bachlor's degree from American University in 1960 and graduated from the Industrial College of the Armed Forces in 1968.

He had been active for many years in the Catholic Youth Organization of St. Catherine Laboure Catholic Church in Wheaton. He was president of the organization and coached baseball and a basketball.

He is survived by his wife, the former Mary Fusick; four children, Thomas Edward, Mary Roberta (Robyn), Brian Patrick and Daniel Matthew, all of Ashton, Md.; three brothers, George, of Ormond Beach, Fla., Edward, Girardville, and Joseph, of Hazelton, Pa.

The family suggests that expressions of sympathy be in the form of contributions to the American Cancer Society.