The difference between lift and drag in easy words
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Lift and drag are
aerodynamic forces that depend on the shape and size of the aircraft, air
conditions, and the flight velocity. Lift is directed perpendicular to the flight path and drag is
directed along the flight path.
**Key points
What is the concept of lift?
What is the difference between
lift and drag?
Why does lift increase drag?
What is drag and lift
principle?
What is the relationship
between lift and drag force?
What is the concept of lift?
Lift is a mechanical force. It is generated by the interaction
and contact of a solid body with a fluid (liquid or gas). It is not generated
by a force field, in the sense of a gravitational field,or an electromagnetic
field, where one object can affect another object without being in physical
contact.
What is the difference between lift and drag?
Lift is defined as the component of the aerodynamic force that is
perpendicular to the flow direction, and drag is the component that is parallel
to the flow direction.
An elliptical planform is the most efficient aerodynamic shape for
an untwisted wing, leading to the lowest amount of induced drag.
What is the relationship
between lift and drag force?
The lift and drag forces are the direct result of the relationship between the relative wind and the aircraft. The lift force always acts perpendicular to the relative wind and the drag force always acts parallel and in the same direction as the relative wind.
Why does lift increase drag?
Induced Drag is an inevitable consequence of lift and is produced by the passage of an aerofoil (e.g. wing or tailplane) through the air. Air flowing over the top of a wing tends to flow inwards because the decreased pressure over the top surface is less than the pressure outside the wing tip.
What is drag and lift
principle?
Drag is given a positive sign, when it pulls in the same direction as the
stream. Drag is a loss that must be overcome with another force, if an object
is to move against a stream. A force perpendicular to the stream is called
lift. A moment around this axis is called a yaw moment.
Increasing the thickness will increase the lift. Increasing the area will increase the lift. Increasing the
altitude will decrease the lift.
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