Does thrust have to be greater than drag?
Assuming a straight and level flight, lift must be equal to weight and drag must be equal to thrust. When the thrust becomes greater than the drag, the plane will accelerate forward. If drag becomes greater than the thrust a deceleration will occur.
What happens to the boat when the forward thrust is greater than the drag?
A: It is only when thrust overcomes drag that a plane moves forward. When drag is greater than thrust, the plane is pushed backward.
What are the relationships between thrust and drag?
Thrust is the force that propels a flying machine in the direction of motion. Engines produce thrust. Drag is the force that acts opposite to the direction of motion. Drag is caused by friction and differences in air pressure.
What force counteracts drag?
Thrust
Does Weight Affect drag?
The heavier the weight, the faster the speed of the object (due to gravity), which will lead to the object colliding into more air molecules per second and therefore making the magnitude of the drag force on the object slightly bigger.
Does drag force increase with mass?
The motion of a falling object can be described by Newton’s second law of motion, Force (F) = mass (m) times acceleration (a). So as the body accelerates its velocity (and the drag) will increase. It will reach a point where the drag is exactly equal to the weight.
What increases drag?
Drag increases with the density of the fluid (ρ). More density means more mass, which means more inertia, which means more resistance to getting out of the way. The two quantities are directly proportional. Drag increases with area (A).
What affects drag force?
Some factors that impact the magnitude of air resistance (drag) include the size and shape of the object, the velocity of the object and the air, and other properties of the air such as its viscosity, mass, and compressibility.
Does drag force depend on speed?
Drag is associated with the movement of the aircraft through the air, so drag depends on the velocity of the air. The inclination of the object to the flow also affects the amount of drag generated by a given shaped object.
How does size affect drag force?
Effect of Size on Drag. The amount of drag generated by an object depends on the size of the object. Like the other aerodynamic force, lift, the drag is directly proportional to the area of the object. Doubling the area doubles the drag.
What are the 2 types of drag?
Drag is the force that resists movement of an aircraft through the air. There are two basic types: parasite drag and induced drag. The first is called parasite because it in no way functions to aid flight, while the second, induced drag, is a result of an airfoil developing lift.
What is drag force in simple words?
Drag is the aerodynamic force that opposes an aircraft’s motion through the air. If there is no fluid, there is no drag. Drag is generated by the difference in velocity between the solid object and the fluid. There must be motion between the object and the fluid. If there is no motion, there is no drag.
How do we find drag force?
The drag equation states that drag D is equal to the drag coefficient Cd times the density r times half of the velocity V squared times the reference area A. For given air conditions, shape, and inclination of the object, we must determine a value for Cd to determine drag.
Who was the first ever drag queen?
William Dorsey Swann