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calculations of lift and drag forces

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by

Mostafa Mohamed

on 17 December 2014

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Transcript of calculations of lift and drag forces

Most frames designed today have a square shape, which increases the drag force acting on it.
Aerodynamic frame for the Hovercraft
Aerodynamic drag, is the component of a force on a body acting parallel to the direction of motion
The equation for calculating the drag is


THE DYNAMIC EFFECTS AND HUMP DRAG
Buoyancy principle
Hump drag phenomena
Once the lift is equal to the weight of the hovercraft the craft will lift off and hover
For hovercraft
In the situation where a hovercraft begins to hover over water, its cushion pressure will displace the water under the craft... The total weight of water displaced equals the gross weight of the hovercraft
calculations of lift and drag forces
When a body is immersed in fluid at rest it experiences an upward force or buoyant force equal to the weight of the fluid displaced by the body.
The hump drag of a vehicle is proportional to its width. In fact, the least hump drag is achieved with pointed nose streamlined structure. This is also the best design for high speed-race vehicles because it minimizes the area that is affected by the drag
Aerodynamic Drag
Lift force
P=F/A
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