Mission Elapsed Time (MET) is used by NASA during their space missions, most notably during their Space Shuttle missions. Due to the fact that timing is very consequential in a mission, all events after launch are scheduled on the Mission Elapsed Time. This avoids the constant rescheduling of events in case the launchtime slips. The MET-clock is set to zero at the moment of liftoff and counts forward in normal days, hours, minutes, and seconds. For example, 2:03:45:18 MET means it has been 2 days, 3 hours, 45 minutes, and 18 seconds since liftoff.[1][2] MET was formerly called Ground Elapsed Time (GET) prior to the Space Shuttle.[3]
The International Space Station (ISS) does not use an MET clock since it is a "permanent" and international mission. The ISS observes Greenwich Mean Time (UTC/GMT). The shuttles also had UTC clocks so that the astronauts could easily figure out what the "official" time aboard ISS was.[4]
In 2019, a test flight of the Boeing CST-100 Starliner spacecraft suffered a mission anomaly through an incorrectly set Mission Elapsed Time on the vehicle.[5]
Referencesedit
^. 1995-09-13. Archived from the original on 2007-07-18. Retrieved 2007-11-09.
^. 2002-12-07. Archived from the original on 2003-02-19. Retrieved 2007-11-09.
^Orloff, Richard. "Apollo by the Numbers - Introduction".
^ Expedition 7 astronaut Ed Lu, Updated: 09/08/2003 Accessed August 2007
^Burghardt, Thomas (2019-12-23). "OFT Starliner Makes Early Landing at White Sands". NASASpaceFlight.com. Retrieved 2019-12-24.
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mission, elapsed, time, used, nasa, during, their, space, missions, most, notably, during, their, space, shuttle, missions, fact, that, timing, very, consequential, mission, events, after, launch, scheduled, this, avoids, constant, rescheduling, events, case, . Mission Elapsed Time MET is used by NASA during their space missions most notably during their Space Shuttle missions Due to the fact that timing is very consequential in a mission all events after launch are scheduled on the Mission Elapsed Time This avoids the constant rescheduling of events in case the launchtime slips The MET clock is set to zero at the moment of liftoff and counts forward in normal days hours minutes and seconds For example 2 03 45 18 MET means it has been 2 days 3 hours 45 minutes and 18 seconds since liftoff 1 2 MET was formerly called Ground Elapsed Time GET prior to the Space Shuttle 3 The International Space Station ISS does not use an MET clock since it is a permanent and international mission The ISS observes Greenwich Mean Time UTC GMT The shuttles also had UTC clocks so that the astronauts could easily figure out what the official time aboard ISS was 4 In 2019 a test flight of the Boeing CST 100 Starliner spacecraft suffered a mission anomaly through an incorrectly set Mission Elapsed Time on the vehicle 5 References edit Mission Elapsed Time explained 1995 09 13 Archived from the original on 2007 07 18 Retrieved 2007 11 09 Ask the STS 113 crew Question 14 2002 12 07 Archived from the original on 2003 02 19 Retrieved 2007 11 09 Orloff Richard Apollo by the Numbers Introduction Eds Musings from Space Expedition 7 astronaut Ed Lu Updated 09 08 2003 Accessed August 2007 Burghardt Thomas 2019 12 23 OFT Starliner Makes Early Landing at White Sands NASASpaceFlight com Retrieved 2019 12 24 nbsp This space or spaceflight related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Mission Elapsed Time amp oldid 1167435944, wikipedia, wiki, book, books, library,
