0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why drag increases as lift increase - for helis?
The production of lift creates induced drag. To create more lift, more airspeed is needed, and with airspeed, comes drag.
Objects falling through the air experience a type of friction called .?
Air Resistance or Drag is the type of friction that a falling object encounters while in the air. It has three classifications which are the lift-induced, the parasitic drag and last the wave drag.
Which force causes the downward movement of the paper?
drag
Which force causes downward movement of the paper rotor?
drag
Does paper air plane wingspan increases glide distance?
yes increasing wingspan does increase glide distance.. the reasons are complicated but it has to do with increasing lift while simultaneously decreasing induced drag
Why is induced drag aslo called lift drag?
Induced drag is the name given to the force of drag 'induced' by the act of increasing lift. Induced drag is directly related to how much lift the wing is producing, and usually angle of attack induced drag is usually caused by flow separations at high angles of attack and wing tip vortices, which is the main form of induced drag. Delta wings have massive induced drag because of their high chord which presents a high frontal area at high angles and leading edge vortices used to produce lift at low speed which generate lots of drag. At high speed and low angle however, the leading edge vortex no longer occurs and the wing has a very low frontal area which decreases the induced drag to almost nothing. Unlike other forms of drag, induced drag actually decreases with higher speed.
Induced drag in airplane is reduced by?
winglet
What is zero lift coefficient of drag?
For no lift, The induced drag will be zero. However, there will still be drag due to viscous forces and pressure forces.
Why are aeroplanes shaped the way they are?
To produce lift with the least amount of induced drag.
Why drag increases as lift increase - for helis?
The production of lift creates induced drag. To create more lift, more airspeed is needed, and with airspeed, comes drag.
What is the purpose of winglets?
Winglets increase an aircraft's operating efficiency by reducing induced drag at the tips of the wings
Does excessive alcohol consumption cause sterss induced acute gastric enteritis?
No, it causes alcohol-induced gastric enteritis.
What causes Russell's sign?
It is caused by self-induced vomiting
Objects falling through the air experience a type of friction called .?
Air Resistance or Drag is the type of friction that a falling object encounters while in the air. It has three classifications which are the lift-induced, the parasitic drag and last the wave drag.
Why are nose cones on rockets?
The pointed end reduces flat-plate drag so that maximum speed can be induced from the thrust.
Induced drag on a airplane?
In aerodynamics, lift-induced drag, induced drag, vortex drag, or sometimes drag due to lift, is a drag force that occurs whenever a moving object redirects the airflow coming at it. This drag force occurs in airplanes due to wings or a lifting body redirecting air to cause lift and also in cars with airfoil wings that redirect air to cause a downforce. With other parameters remaining the same, induced drag increases as the angle of attack increases.Source of induced drag:Lift is produced by the changing direction of the flow around a wing. The change of direction results in a change of velocity (even if there is no speed change, just as seen in uniform circular motion), which is an acceleration. To change the direction of the flow therefore requires that a force be applied to the fluid; lift is simply the reaction force of the fluid acting on the wing.When producing lift, air below the wing is generally at a higher than atmospheric pressure, while air above the wing is generally at a lower than atmospheric pressure. On a wing of finite span, this pressure difference causes air to flow from the lower surface wing root, around the wingtip, towards the upper surface wing root. This spanwise flow of air combines with chordwise flowing air, causing a change in speed and direction, which twists the airflow and produces vortices along the wing trailing edge. The vortices created are unstable, and they quickly combine to produce wingtip vortices.[2] The resulting vortices change the speed and direction of the airflow behind the trailing edge, deflecting it downwards, and thus inducing downwash behind the wing.Wingtip vortices also modify the airflow around a wing, compared to a wing of infinite span, reducing the effectiveness of the wing to generate lift, thus requiring a higher angle of attack to compensate, and tilting the total aerodynamic force rearwards. The angular deflection is small and has little effect on the lift. However, there is an increase in the drag equal to the product of the lift force and the angle through which it is deflected. Since the deflection is itself a function of the lift, the additional drag is proportional to the square of the lift.The total aerodynamic force is usually thought of as two components, lift and drag. By definition, the component of force parallel to the oncoming flow is called drag; and the component perpendicular to the oncoming flow is called lift.At practical angles of attack the lift greatly exceeds the drag. Unlike parasitic drag on an object (which is proportional to the square of the airspeed), for a given lift, induced drag on an airfoil is inversely proportional to the square of the airspeed. In straight and level flight of an aircraft, lift varies only slowly because it is approximately equal to the weight of the aircraft. Consequently in straight and level flight, the induced drag is inversely proportional to the square of the airspeed. At the speed for minimum drag, induced drag is equal to parasitic drag.
Which force causes the downward movement of the paper?
drag
