description Yvonne C. Brill Overview
Yvonne C. Brill was a Canadian-American aerospace engineer known for developing hydrazine-fueled resistojet propulsion. This electrothermal system was designed for satellite station-keeping, allowing spacecraft to make small adjustments over extended missions. Brill worked in the aerospace industry for several decades and received the United States National Medal of Technology and Innovation for her contributions to spacecraft propulsion.
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What did Yvonne C. Brill invent?
Her best-known invention was the electrothermal hydrazine thruster, also called a hydrazine resistojet. It electrically heats hydrazine to provide efficient low-thrust propulsion for satellite station-keeping. [Source](https://nationalmedals.org/laureate/yvonne-c-brill/)
Did Yvonne C. Brill work for NASA?
Her most important propulsion work was carried out at RCA Astro Electronics, where she developed technology for communications satellites. She is better described as an aerospace engineer in the private space industry than as a conventional NASA employee. [Source](https://nationalmedals.org/laureate/yvonne-c-brill/)
When did Yvonne C. Brill receive the National Medal of Technology?
She was recognized as a 2010 National Medal of Technology and Innovation laureate, and President Barack Obama presented the medal in 2011. The award honored her hydrazine propulsion work and her influence on satellite engineering. [Source](https://nationalmedals.org/laureate/yvonne-c-brill/)
Why was Brill's resistojet important for satellites?
A resistojet can use electrical energy to heat hydrazine and generate controlled thrust for orbital corrections. That made the technology useful for keeping communications satellites in position over long missions. [Source](https://nationalmedals.org/laureate/yvonne-c-brill/)
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