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Refer to figure.
What do the numbers represent?
  • A
    2) Thrust (T); 8) Weight (W).
  • B
    4) Lift (L); 7) W cos a.
  • C
    2) Thrust (T); 4) Weight (W).
  • D
    7) Weight (W); 4) W cos a.

Refer to figure.
Forces During Climb
When an aircraft is in a steady climb, various forces come into play, including:

  • Lift (4): This force acts perpendicular or normal to the aircraft's flight path.

  • Weight (7): Weight acts along the local vertical and is parallel to the force of gravity.

  • Thrust (2): Thrust is directed parallel to the flight path. In some cases, the thrust vector may be slightly inclined upwards due to engine design and mounting, which helps balance the lift force against the weight force.

  • Drag (6): Drag operates parallel to the flight path.

In simple terms, all these forces are centered at the aircraft's center of gravity.

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