Yvonne Brill, Canadian-American propulsion engineer (d. 2013)
Yvonne Madelaine Brill (née Claeys; December 30, 1924 – March 27, 2013) was a Canadian-American rocket and jet propulsion engineer. She is responsible for inventing the fuel-efficient rocket thruster that keeps satellites in orbit today. During her career she was involved in a broad range of national space programs in the United States, including NASA and the International Maritime Satellite Organization.