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Lift of an aircraft when it is flying straight and level is

Lift of an aircraft when it is flying straight and level is Correct Answer Equal to the weight

Concept:

Maintaining a steady flight requires a balance, it is also described as an equilibrium of all the forces acting upon an aeroplane.

Forces acting on the plane while flying is,

  • Weight
  • Lift
  • Thrust
  • Drag

   

What happens if this equilibrium is violated:

  • If the lift becomes greater than weight, then the plane will accelerate upward.
  • If the weight is greater than the lift, then the plane will accelerate downward.

  • When the thrust becomes greater than the drag, the plane will accelerate forward.

  • If drag becomes greater than the thrust a deceleration will occur.

When an aircraft is flying straight and level, the total lift is acting perpendicular to the wings and to the earth. As the plane is banked into a turn, the lift then becomes the resultant of two components.

Therefore, when aeroplane is flying, the lift is equal to its weight.

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