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Propellant Savings during Soyuz Undock from the International Space StationAs a vehicle continuously orbiting Earth for over a decade, the International Space Station (ISS) must be conscious of ways to conserve consumables to maximize the efficiency of cargo flights to ISS. One such consumable is propellant. As part of an ongoing effort to minimize propellant usage onboard ISS and use control moment gyroscopes as much as possible for ISS control, an effort was made in late 2014 to allow Soyuz manned vehicle undockings without requiring the use of thrusters. This method, which has been used for four Soyuz undockings, saves up to 160 kg of propellant each year. Fiona completed a B.S. is Mechanical Engienering at Washington University in St. Louis in 2009, after which she moved to Houston, TX to begin working at NASA Johnson Space Center. She currently works in the Flight Operations Directorate as an ADCO (Attitude Determination and Control Officer) flight controller and MCG (Motion Control Group) instructor. Her responsibilities include operating the motion control systems of the ISS in Mission Control, interfacing with Russian colleagues, mentoring and teaching flight controller trainees, and training astronauts for their missions to ISS.
Document ID
Document Type
Turett, Fiona
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
May 25, 2016
Publication Date
May 11, 2016
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
Meeting Information
Astronaut Scholar Technical Conference(Cocoa Beach, FL)
Distribution Limits
Work of the US Gov. Public Use Permitted.

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