NASA Career
Selected by NASA in January 1990, Chiao became an astronaut in July 1991. He is qualified for flight assignment as a mission specialist. His technical assignments to date include: Space Shuttle flight software verification in the Shuttle Avionics Integration Laboratory (SAIL); crew equipment, Spacelab, Spacehab and payloads issues for the Astronaut Office Mission Development Branch; Training and Flight Data File issues; and Extra-vehicular activity (EVA) issues for the EVA Branch. Chiao also served as Chief of the Astronaut Office EVA Branch.
A veteran of three space flights, Chiao flew as a mission specialist on STS-65 in 1994, STS-72 in 1996 and STS-92 in 2000. Chiao had logged over 36 days and 12.5 hours in space, including over 26 EVA hours in four space walks, prior to his mission aboard the International Space Station.
In addition to being fluent in Mandarin, Chiao learned Russian as part of the International Space Station program. On November 2, 2004, Chiao voted in the 2004 United States presidential election from aboard the International Space Station, making him the first American to vote in a presidential election while in space. McDonald’s presented Chiao with a Big Mac and French Fries at their branch in Star City as one of his first meals since returning to Earth after his ISS assignment. Among the souvenirs he brought into space in his previous space flights were a Chinese flag and a quartz-carved rose from Hong Kong.
Chiao was the inadvertent developer of the procedure to use the IRED (Interim Resistive Exercise Device) to excite the solar arrays of the ISS. During an exercise session of squats on the ISS, Chiao sent a vibration through the space station that caused the solar arrays to ripple - a low amplitude frequency response. When Chiao did this, the response from Mission Control was "knock it off." However, several years later during an ISS assembly flight in December 2006 (STS-116), German astronaut Thomas Reiter of the European Space Agency was told to do 30 seconds of robust exercise on the bungee-bar IRED machine to help retract ISS solar arrays, specifically to relieve tension in a wire system that was preventing the array from folding up like an accordion. An eventual unplanned spacewalk during the same shuttle mission managed to finally retract the array.
Chiao left NASA in December 2005 to pursue employment in the private sector.
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