WASHINGTON — Aerojet Rocketdyne, the company created in June by the $550 million merger of the top two U.S. suppliers of liquid-fueled rocket engines, could lay off as many as 225 employees by March as it streamlines operations, parent company GenCorp said.

Notices to employees who could be affected went out Jan. 30, Sacramento, Calif,-based GenCorp said in a Feb. 7 press release announcing earnings for the fiscal quarter and year ended Nov. 30. 

The company would incur a one-time cost of $15.7 million related to the downsizing, GenCorp said.

Dan Leone is the NASA reporter for SpaceNews, where he also covers other civilian-run U.S. government space programs and a growing number of entrepreneurial space companies. He joined SpaceNews in 2011.Dan earned a bachelor's degree in public communications...