mechanical jack is a device which lifts heavy equipment. The most common form is a car jack‚ floor jack or garage jack which lifts vehicles so that maintenance can be performed. Car jacks usually use mechanical advantage to allow a human to lift a vehicle by manual force alone. More powerful jacks use hydraulic power to provide more lift over greater distances. Mechanical jacks are usually rated for a maximum lifting capacity for example‚ 1.5 tons or 3 tons. The scissor jack is made for a modern vehicle
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the Challenge Ahead! Meeting SAEINDIA Student Activities SAE Page 1 of 31 SAEINDIA SAE Student Convention 1. Assembly Instructions Enjoy Learn and align with Curriculum September 2008 Paper Wings Guidelines Tools and materials Scissors A pair of scissors that cuts well. Ruler Used to fold pieces and make creases accurately Common ordinary table knife Used for making the creases in triangular long fuselage Clips Approximately 10 clips are required
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understanding the physics that allow it to lift enormous weights into the sky. All flight is the result of forces acting upon the wings of an airplane that allow it to counteract gravity. Contrary to popular belief‚ the Bernoulli principle is not responsible for most of the lift generated by an airplanes wings. Rather‚ the lift is created by air being deflected off the wings and transferring an upward force to those wings. The most important factor in determining the lift generated by an airplane is the
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Although‚ there are many concepts when it comes to aerodynamics‚ I’m going to discuss the four major ones today. Lift‚ weight‚ thrust‚ and drag. During flight‚ there is a constant relationship between these forces. Lift is the upward force created by the effect of airflow as it passes over and under the wing. The airplane is supported in flight by lift. Weight‚ which opposes lift‚ is caused by the downward pull of gravity. Thrust is the forward force which propels the airplane through the air‚
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principle. Although they are not entirely the same in the they apply these theories but in a way they are similar. Whether fixed or rotating the wing achieves lift due to it’s shape. The upper side is rounded causing passing air to accelerate. This makes the air less dense creating a low pressure compared to air below the wing which generates the lift. On top of that‚ both helicopters and airplanes are widely use in many different fields. Comercial‚ military‚ search and rescue‚ and law enforcement to name
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result is lower pressure on top and more pressure on the bottom. Another name for this is lift. The higher pressure below the wing is just like someone pushing from below the wing; the lower pressure above the wing is like someone pulling it up. Lift can help overcome the forces of gravity would pull the plane to almost certain destruction. If a wing has enough lift upwards‚ it moves upward‚ if a wing has lift downwards‚ it moves downward. Even though most paper airplanes have ’flat’ wings‚ they
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Vector sum of these velocities produce Ve = ω r + V + w (1) The section has a geometric pitch angle of its zero lift line of β . If it is assumed that V and ωr are known‚ then calculation of the induced velocity w is desired to find α i ‚ and consequently the section angle of attack α . Knowing α ‚ and the section type‚ C l and C d can be calculated‚ then the differential lift and drag of the section will follow. However‚ w depends on dL which in turn depends on w . Thus the problem is closely
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‘Aspect Ratio’ and the ‘Thickness Ratio’ of aerofoil sections. An aspect ratio is the span of an aircrafts wings‚ from tip to tip all along the axis of symmetry of the aeroplane. The more the aspect ratio of a wing the greater the bending forces by the lift at the root. The thickness of a high aspect
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said topic. | A ll the object here on the Earth above‚ needs a wing in order to lift itself and a power to push itself forward. If an object is light in weight it is easy to fly‚ like a kite‚ it is made up of paper and thin strips of wood‚ so it is light in weight‚ a bird; their body is lightweight so they can fly easily without any hassle. If an object is heavy or huge‚ it needs a great lift and power in order to lift them. I’m pretty much sure that most of the people here‚ ask themselves‚ ask their
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this allows for the air on the bottom to move slower‚ which creates more pressure on the bottom‚ and allows for the air on the top to move faster‚ which creates less pressure. This is what creates lift‚ which allows planes to fly. An airplane is also acted upon by a pull of gravity in which opposes the lift‚ drag and thrust. Thrust is the force that enables the airplane to move forward while drag is air resistance that opposes the thrust force. *A bird’s wing
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