I am very interested in the principles of take-off performance optimization. During my research I found an interesting picture, showing the software used by a European carrier.

However, the output presented shows a value I do not understand:

In the lower right corner, the following values are shown:

PTOW: 68.5

 

Field Length: 73.2

 

Sec. Segment: 71.0

 

Obstacle: 68.5

I do not understand what the Second Segment limit stands for.

I know about the different phases of the take-off run, however I am not aware how the Second Segment could be limited by any other weight than the Obstacle Clearing weight.

I am very interested in the principles of take-off performance optimization. During my research I found an interesting picture, showing the software used by a European carrier.

However, the output presented shows a value I do not understand:

In the lower right corner, the following values are shown:

PTOW: 68.5

Field Length: 73.2

Sec. Segment: 71.0

Obstacle: 68.5

I do not understand what the Second Segment limit stands for.

I know about the different phases of the take-off run, however I am not aware how the Second Segment could be limited by any other weight than the Obstacle Clearing weight.

I am very interested in the principles of take-off performance optimization. During my research I found an interesting picture, showing the software used by a European carrier.

However the outputs presented shows a value I cannot comprehend:

In the lower right corner there are displayed:

PTOW: 68.5

Field Length: 73.2

Sec. Segment: 71.0

Obstacle: 68.5

I do not understand what the Second Segment limit stands for.

I know about the different phases of the take-off run, however I am not aware how the Second Segment could be limited by any other weight than the Obstacle Clearing weight.

Any kind of information, clarification or literature advice would be highly appreciated!

Thank you so much!

I am very interested in the principles of take-off performance optimization. During my research I found an interesting picture, showing the software used by a European carrier.

However, the output presented shows a value I do not understand:

In the lower right corner, the following values are shown:

PTOW: 68.5

Field Length: 73.2

Sec. Segment: 71.0

Obstacle: 68.5

I do not understand what the Second Segment limit stands for.

I know about the different phases of the take-off run, however I am not aware how the Second Segment could be limited by any other weight than the Obstacle Clearing weight.