2007-07-06 05:21:23 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
second engine cut off
http://acronyms.thefreedictionary.com/SECO
Ron.
2007-07-06 05:31:13 · answer #1 · answered by Anonymous · 1⤊ 0⤋
In the Apollo program, SECO stood for S-4b Engine Cut Off. The S-4B was the third stage of the Saturn V rocket. When it shut down after orbit was achieved, that was SECO. Notice in the movie Apollo 13. The CAPCOM says S-4B cut off in ten seconds and then Haise says SECO! It was easier to say SECO than saying the whole thing and more recognizable over the radio.
2007-07-06 23:56:34 · answer #2 · answered by ericbryce2 7 · 0⤊ 0⤋
It is Sustainer Engine Cut Off. The Atlas has 3 main engines, with the outer two being dropped off early in the flight while the third one continues all the way to orbit. That 3rd engine is called the Sustainer Engine. Some other rockets have such engines too I think.
2007-07-06 06:36:39 · answer #3 · answered by campbelp2002 7 · 0⤊ 0⤋
It means second engine cutoff. That was when the third stage shut down after it put itself and the Apollo spacecraft into a parking orbit around the Earth before firing again to send Apollo to the moon.
2007-07-06 08:38:34 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Any acronym ending "xECO" means "x engine cut-off". MECO is main engine cut-off, CECO is center engine cut-off, SECO is single or secondary engine cut-off.
2007-07-06 05:32:34 · answer #5 · answered by JLynes 5 · 2⤊ 0⤋
Secondary engine cut off.. as was stated before anything that has an (x) ECO means (x) engine cut off
2007-07-06 07:06:10 · answer #6 · answered by mcdonaldcj 6 · 0⤊ 0⤋