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winglet
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∙ 11y ago
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How does drag affect a paper airplane?
Drag effects paper airplane just as it affects anything else that moves. It is either parasitic or induced on paper airplanes. Drag may reduce a paper airplanes speed and/or range.
How can you maximize the lift to drag ratio of an aircraft?
Fly the airplane at L/Dmax speed. This is also know as best glide. This speed is found in the POH and represents where induced and parasite drags are at there minimal values for the airplane.
Why do aircraft have flipped up wing ends?
The edges of airplane wings cause vortices, in other words, a trail of air turbulence, usually in a spiral pattern. It was discovered that this actually adds extra "drag" on the airplane (wind resistance that the airplane must push through). Engineers found that by adding these "winglets", or "wingtip devices", the vortices were reduced, which reduced drag on the airplane, and this allowed greater fuel efficiency, which is important for commercial aviation.
How can parasite drag of an airplane be reduced?
It can be reduce by streamline as many of the parts as possible, by using fairing , surface of aeroplane cleaned and polished.
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.
What force does an airplane have to overcome in order to stay in flight?
Airplanes have to overcome more than just one force in order to fly. Gravity, of course, is the most obvious one. Drag is another one. The silhouette/cross section/wetted area which the airplane presents to the wind is one obvious form of drag. Then there's induced drag, the friction of the air over the aircraft skin, which increases as the speed of the aircraft increases. There are also incidental sources of turbulence that contribute to induced drag. All of these are overcome with clever design and lots of power.
What is the affect of thrust lift gravity and drag on a plane?
LIFT -- force provided by the wing and in perpendicular direction to the wing. In straight and level flight the lift is exactly equal to the aircraft weight. WEIGHT -- the force pulling vertically down on the airplane due to gravity. In straight and level flight this is equal to the lift. THRUST -- the force that pulls the airplane forward, provided by the propeller or jet engine. If the airplane is flying at a constant speed in level flight, this thrust is exactly equal to the drag. DRAG -- the aerodynamic force on the airplane in the opposite direction of its travel. Drag is due to skin friction, form drag (drag around wheels, struts, etc) and induced drag (produced by the wing as a side effect of lift)
What is the maximum speed an airplane can go?
The maximum speed a airplane can go is a factor of it drag and trust. All planes have a Vne speed witch is the never exceed speed, which is were the amount of drag becomes so great that it will start to damage the aircraft. Many factors have play on this number, such as the camber of the wing, form drag, induced drag, and how strong the frame is. A C-173 Vne is 169, and a SR-22 can go muck 3 or 4. Maximum speed of a airplane is around 1000 km per hour
Basic elements of an airplane flight?
I think you might be referring to the four forces of flight. LIFT -- force provided by the wing and in perpendicular direction to the wing. In straight and level flight the lift is exactly equal to the aircraft weight. WEIGHT -- the force pulling vertically down on the airplane due to gravity. In straight and level flight this is equal to the lift. THRUST -- the force that pulls the airplane forward, provided by the propeller or jet engine. If the airplane is flying at a constant speed in level flight, this thrust is exactly equal to the drag. DRAG -- the aerodynamic force on the airplane in the opposite direction of its travel. Drag is due to skin friction, form drag (drag around wheels, struts, etc) and induced drag (produced by the wing as a side effect of lift)
How can drag be reduced in practice?
Air drag can be reduced by improving riding posture and the use of tight fitting slick clothes.. Mechanical drag can be reduced by the use of high quality bearings.
What is it called when an aircraft is landing and it keeps alike 'floating' above the Runway before touching down?
An airplane begins its "Flare" once it enters "ground effect. Ground effect is what causes the airplane to float because of an increase in lift(what makes an airplane fly). This increase is caused by induced drag, created by the production of lift.
What is the shape of an airplane and why does this have this shape?
The commonly used fuselage shape allows the aeroplane to move forward through the air at a reduced drag. And the sectional shape of the wings create lift.
