What does “out of trim” mean?
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Our flight was delayed from takeoff because the captain reported it to be "out of trim". What does this mean?
terminology trim
edited 14 hours ago
kevin
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up vote
11
down vote
favorite
Our flight was delayed from takeoff because the captain reported it to be "out of trim". What does this mean?
terminology trim
edited 14 hours ago
kevin
27.4k796225
asked yesterday
user35383
563
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user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Did you notice people being shifted to different seats during the delay? For center of gravity purposes, the cabin is divided into zones. It's possible that the actual assigned seats filled left one or more zones "underweight" you might say, due to ppl not showing up. If this was the case you'd have seen the Flight Atts requesting people to move to different seats.
– John K
yesterday
add a comment |
up vote
11
down vote
favorite
up vote
11
down vote
favorite
Our flight was delayed from takeoff because the captain reported it to be "out of trim". What does this mean?
terminology trim
edited 14 hours ago
kevin
27.4k796225
asked yesterday
user35383
563
New contributor
user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Our flight was delayed from takeoff because the captain reported it to be "out of trim". What does this mean?
terminology trim
terminology trim
edited 14 hours ago
kevin
27.4k796225
asked yesterday
user35383
563
New contributor
user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 14 hours ago
kevin
27.4k796225
asked yesterday
user35383
563
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user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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edited 14 hours ago
kevin
27.4k796225
edited 14 hours ago
kevin
27.4k796225
edited 14 hours ago
kevin
27.4k796225
27.4k796225
asked yesterday
user35383
563
New contributor
user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
user35383
563
asked yesterday
user35383
563
563
New contributor
user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
user35383 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Did you notice people being shifted to different seats during the delay? For center of gravity purposes, the cabin is divided into zones. It's possible that the actual assigned seats filled left one or more zones "underweight" you might say, due to ppl not showing up. If this was the case you'd have seen the Flight Atts requesting people to move to different seats.
– John K
yesterday
add a comment |
Did you notice people being shifted to different seats during the delay? For center of gravity purposes, the cabin is divided into zones. It's possible that the actual assigned seats filled left one or more zones "underweight" you might say, due to ppl not showing up. If this was the case you'd have seen the Flight Atts requesting people to move to different seats.
– John K
yesterday
Did you notice people being shifted to different seats during the delay? For center of gravity purposes, the cabin is divided into zones. It's possible that the actual assigned seats filled left one or more zones "underweight" you might say, due to ppl not showing up. If this was the case you'd have seen the Flight Atts requesting people to move to different seats.
– John K
yesterday
Did you notice people being shifted to different seats during the delay? For center of gravity purposes, the cabin is divided into zones. It's possible that the actual assigned seats filled left one or more zones "underweight" you might say, due to ppl not showing up. If this was the case you'd have seen the Flight Atts requesting people to move to different seats.
– John K
yesterday
add a comment |
2 Answers
2
active
oldest
votes
up vote
22
down vote
In this context, it would mean the aircraft is loaded in such a way that the Center of Gravity is too far forward or aft. That's actually not the way we usually use the word "trim" in aviation but it's what it means in this case.
answered yesterday
quiet flyer
1,206324
How is this detected on the ground? are there dedicated sensors or a system for that?
– Alex
yesterday
11
@Alex: That sounds like a great candidate for posting a new question.
– Eric Lippert
yesterday
3
@Alex: they know a lot about the baggage, and they know where the passengers sit. That's why they will move passengers around. If you fly on a small enough plane, they will ask you your weight (it's happened to me twice, though once was a large passenger helicopter).
– Flydog57
yesterday
aviation.stackexchange.com/questions/1850/…
– vasin1987
6 hours ago
add a comment |
up vote
6
down vote
"Trim" is the ability to correct for deviations in flight controls by prepositioning the flight surfaces for a particular direction. For example, if the aircraft is pitching up a bit by default, you can trim down in order to counteract it.
"Out of trim" would mean that the Aircraft has either been improperly trimmed, or is operating outside of the range trim can be applied. (If the aircraft is pulling down hard, you can only trim up so much.) This can be due to a mechanical defect, improper weight and balance, or other issues. He may not be able to safely guarantee the aircraft is trimmed in such conditions.
There is a related question here that explains it in further detail:
What is an out-of-trim condition and how is it detected?
answered yesterday
Matt
1,576520
3
This can, however, only be detected when flying. On the ground, “out of trim” means balance out of limits.
– Jan Hudec
yesterday
Trim controls speed. The airplane will seek, in the absence of a pilot elevator input, a given speed based on where the trim device, tab or moveable stabilizer, is set. If an airplane is pitching up as in your example,it means it's going faster than its trim speed and is trying to slow down to achieve equilibrium. When you adjust the trim nose down to stop a pitch movement, you are increasing the airplane's trim speed to match its current speed.
– John K
yesterday
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
22
down vote
In this context, it would mean the aircraft is loaded in such a way that the Center of Gravity is too far forward or aft. That's actually not the way we usually use the word "trim" in aviation but it's what it means in this case.
answered yesterday
quiet flyer
1,206324
How is this detected on the ground? are there dedicated sensors or a system for that?
– Alex
yesterday
11
@Alex: That sounds like a great candidate for posting a new question.
– Eric Lippert
yesterday
3
@Alex: they know a lot about the baggage, and they know where the passengers sit. That's why they will move passengers around. If you fly on a small enough plane, they will ask you your weight (it's happened to me twice, though once was a large passenger helicopter).
– Flydog57
yesterday
aviation.stackexchange.com/questions/1850/…
– vasin1987
6 hours ago
add a comment |
up vote
22
down vote
In this context, it would mean the aircraft is loaded in such a way that the Center of Gravity is too far forward or aft. That's actually not the way we usually use the word "trim" in aviation but it's what it means in this case.
answered yesterday
quiet flyer
1,206324
How is this detected on the ground? are there dedicated sensors or a system for that?
– Alex
yesterday
11
@Alex: That sounds like a great candidate for posting a new question.
– Eric Lippert
yesterday
3
@Alex: they know a lot about the baggage, and they know where the passengers sit. That's why they will move passengers around. If you fly on a small enough plane, they will ask you your weight (it's happened to me twice, though once was a large passenger helicopter).
– Flydog57
yesterday
aviation.stackexchange.com/questions/1850/…
– vasin1987
6 hours ago
add a comment |
up vote
22
down vote
up vote
22
down vote
In this context, it would mean the aircraft is loaded in such a way that the Center of Gravity is too far forward or aft. That's actually not the way we usually use the word "trim" in aviation but it's what it means in this case.
answered yesterday
quiet flyer
1,206324
In this context, it would mean the aircraft is loaded in such a way that the Center of Gravity is too far forward or aft. That's actually not the way we usually use the word "trim" in aviation but it's what it means in this case.
answered yesterday
quiet flyer
1,206324
answered yesterday
quiet flyer
1,206324
answered yesterday
quiet flyer
1,206324
answered yesterday
quiet flyer
1,206324
1,206324
How is this detected on the ground? are there dedicated sensors or a system for that?
– Alex
yesterday
11
@Alex: That sounds like a great candidate for posting a new question.
– Eric Lippert
yesterday
3
@Alex: they know a lot about the baggage, and they know where the passengers sit. That's why they will move passengers around. If you fly on a small enough plane, they will ask you your weight (it's happened to me twice, though once was a large passenger helicopter).
– Flydog57
yesterday
aviation.stackexchange.com/questions/1850/…
– vasin1987
6 hours ago
add a comment |
How is this detected on the ground? are there dedicated sensors or a system for that?
– Alex
yesterday
11
@Alex: That sounds like a great candidate for posting a new question.
– Eric Lippert
yesterday
3
@Alex: they know a lot about the baggage, and they know where the passengers sit. That's why they will move passengers around. If you fly on a small enough plane, they will ask you your weight (it's happened to me twice, though once was a large passenger helicopter).
– Flydog57
yesterday
aviation.stackexchange.com/questions/1850/…
– vasin1987
6 hours ago
How is this detected on the ground? are there dedicated sensors or a system for that?
– Alex
yesterday
How is this detected on the ground? are there dedicated sensors or a system for that?
– Alex
yesterday
11
11
@Alex: That sounds like a great candidate for posting a new question.
– Eric Lippert
yesterday
@Alex: That sounds like a great candidate for posting a new question.
– Eric Lippert
yesterday
3
3
@Alex: they know a lot about the baggage, and they know where the passengers sit. That's why they will move passengers around. If you fly on a small enough plane, they will ask you your weight (it's happened to me twice, though once was a large passenger helicopter).
– Flydog57
yesterday
@Alex: they know a lot about the baggage, and they know where the passengers sit. That's why they will move passengers around. If you fly on a small enough plane, they will ask you your weight (it's happened to me twice, though once was a large passenger helicopter).
– Flydog57
yesterday
aviation.stackexchange.com/questions/1850/…
– vasin1987
6 hours ago
aviation.stackexchange.com/questions/1850/…
– vasin1987
6 hours ago
add a comment |
up vote
6
down vote
"Trim" is the ability to correct for deviations in flight controls by prepositioning the flight surfaces for a particular direction. For example, if the aircraft is pitching up a bit by default, you can trim down in order to counteract it.
"Out of trim" would mean that the Aircraft has either been improperly trimmed, or is operating outside of the range trim can be applied. (If the aircraft is pulling down hard, you can only trim up so much.) This can be due to a mechanical defect, improper weight and balance, or other issues. He may not be able to safely guarantee the aircraft is trimmed in such conditions.
There is a related question here that explains it in further detail:
What is an out-of-trim condition and how is it detected?
answered yesterday
Matt
1,576520
3
This can, however, only be detected when flying. On the ground, “out of trim” means balance out of limits.
– Jan Hudec
yesterday
Trim controls speed. The airplane will seek, in the absence of a pilot elevator input, a given speed based on where the trim device, tab or moveable stabilizer, is set. If an airplane is pitching up as in your example,it means it's going faster than its trim speed and is trying to slow down to achieve equilibrium. When you adjust the trim nose down to stop a pitch movement, you are increasing the airplane's trim speed to match its current speed.
– John K
yesterday
add a comment |
up vote
6
down vote
"Trim" is the ability to correct for deviations in flight controls by prepositioning the flight surfaces for a particular direction. For example, if the aircraft is pitching up a bit by default, you can trim down in order to counteract it.
"Out of trim" would mean that the Aircraft has either been improperly trimmed, or is operating outside of the range trim can be applied. (If the aircraft is pulling down hard, you can only trim up so much.) This can be due to a mechanical defect, improper weight and balance, or other issues. He may not be able to safely guarantee the aircraft is trimmed in such conditions.
There is a related question here that explains it in further detail:
What is an out-of-trim condition and how is it detected?
answered yesterday
Matt
1,576520
3
This can, however, only be detected when flying. On the ground, “out of trim” means balance out of limits.
– Jan Hudec
yesterday
Trim controls speed. The airplane will seek, in the absence of a pilot elevator input, a given speed based on where the trim device, tab or moveable stabilizer, is set. If an airplane is pitching up as in your example,it means it's going faster than its trim speed and is trying to slow down to achieve equilibrium. When you adjust the trim nose down to stop a pitch movement, you are increasing the airplane's trim speed to match its current speed.
– John K
yesterday
add a comment |
up vote
6
down vote
up vote
6
down vote
"Trim" is the ability to correct for deviations in flight controls by prepositioning the flight surfaces for a particular direction. For example, if the aircraft is pitching up a bit by default, you can trim down in order to counteract it.
"Out of trim" would mean that the Aircraft has either been improperly trimmed, or is operating outside of the range trim can be applied. (If the aircraft is pulling down hard, you can only trim up so much.) This can be due to a mechanical defect, improper weight and balance, or other issues. He may not be able to safely guarantee the aircraft is trimmed in such conditions.
There is a related question here that explains it in further detail:
What is an out-of-trim condition and how is it detected?
answered yesterday
Matt
1,576520
"Trim" is the ability to correct for deviations in flight controls by prepositioning the flight surfaces for a particular direction. For example, if the aircraft is pitching up a bit by default, you can trim down in order to counteract it.
"Out of trim" would mean that the Aircraft has either been improperly trimmed, or is operating outside of the range trim can be applied. (If the aircraft is pulling down hard, you can only trim up so much.) This can be due to a mechanical defect, improper weight and balance, or other issues. He may not be able to safely guarantee the aircraft is trimmed in such conditions.
There is a related question here that explains it in further detail:
What is an out-of-trim condition and how is it detected?
answered yesterday
Matt
1,576520
edited yesterday
answered yesterday
Matt
1,576520
answered yesterday
Matt
1,576520
answered yesterday
Matt
1,576520
1,576520
3
This can, however, only be detected when flying. On the ground, “out of trim” means balance out of limits.
– Jan Hudec
yesterday
Trim controls speed. The airplane will seek, in the absence of a pilot elevator input, a given speed based on where the trim device, tab or moveable stabilizer, is set. If an airplane is pitching up as in your example,it means it's going faster than its trim speed and is trying to slow down to achieve equilibrium. When you adjust the trim nose down to stop a pitch movement, you are increasing the airplane's trim speed to match its current speed.
– John K
yesterday
add a comment |
3
This can, however, only be detected when flying. On the ground, “out of trim” means balance out of limits.
– Jan Hudec
yesterday
Trim controls speed. The airplane will seek, in the absence of a pilot elevator input, a given speed based on where the trim device, tab or moveable stabilizer, is set. If an airplane is pitching up as in your example,it means it's going faster than its trim speed and is trying to slow down to achieve equilibrium. When you adjust the trim nose down to stop a pitch movement, you are increasing the airplane's trim speed to match its current speed.
– John K
yesterday
3
3
This can, however, only be detected when flying. On the ground, “out of trim” means balance out of limits.
– Jan Hudec
yesterday
This can, however, only be detected when flying. On the ground, “out of trim” means balance out of limits.
– Jan Hudec
yesterday
Trim controls speed. The airplane will seek, in the absence of a pilot elevator input, a given speed based on where the trim device, tab or moveable stabilizer, is set. If an airplane is pitching up as in your example,it means it's going faster than its trim speed and is trying to slow down to achieve equilibrium. When you adjust the trim nose down to stop a pitch movement, you are increasing the airplane's trim speed to match its current speed.
– John K
yesterday
Trim controls speed. The airplane will seek, in the absence of a pilot elevator input, a given speed based on where the trim device, tab or moveable stabilizer, is set. If an airplane is pitching up as in your example,it means it's going faster than its trim speed and is trying to slow down to achieve equilibrium. When you adjust the trim nose down to stop a pitch movement, you are increasing the airplane's trim speed to match its current speed.
– John K
yesterday
add a comment |
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Did you notice people being shifted to different seats during the delay? For center of gravity purposes, the cabin is divided into zones. It's possible that the actual assigned seats filled left one or more zones "underweight" you might say, due to ppl not showing up. If this was the case you'd have seen the Flight Atts requesting people to move to different seats.
– John K
yesterday