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An outspoken political activist
it argued for the equality of women to men
an ahead-of-its-time book credited with paving the way for modern feminism
Black Women and Feminism and The Feminist Theory in which she declared
Yvonne Brill University of Kansas An outspoken political activistSpace rocket propulsion system Inventor: Yvonne Brill Year period: 1974 Brill's groundbreaking invention, the hydrazine resistojet, streamlined various rocket propulsion systems, which all required different types of fuel and added prohibitive weight, into a lighter system with a single fuel source. Monopropellant thrusters are now standard, and are why we have self propelling satellites.
