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1)For net wt 100kg to be lifted in air ,lift has to be greater than equal to 100kg. 2)To produce minimum of 100kg lift ,it depends upon shape,size,weight,angle of attack of wing and lastly speed /velocity of wing/plane.Further velocity depends upon thrust ,total mass and drag(shape of flying machine). In simple words only Forward thrust,total weight and ...


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If the bottom had tiny holes like the ones on the air hockey games and the floor was smooth, it may slide quite easily just off the floor on the cushion of air.


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Imagine the ballon to stand upright in calm air. Now add a light breeze. Aerodynamic drag will push the ballon sideways. The drag force will act along a line parallel to the wind direction which runs through the center of the ballon and is above the point at which the tether is connected. This force will create a pitching moment and pitch the balloon up. If ...


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A compression shock at subsonic flight speed only occurs when a supersonic pocket of air collapses downstream. Neither of your options is correct, and in that shock the speed drops from mildly supersonic (typically Mach 1.25) to the inverse of that Mach number (that would then be typically Mach 0.8). Acceleration into the supersonic regime is smooth and ...


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My favorite explanation for the lift generated by airfoils is this: One side of the wing does the pushing. It accelerates a very large number of air molecules in a direction roughly 90 degrees from the direction of the wing's apparent direction of travel. The other side of the wing creates a free space for the air molecules to occupy. Air has mass, and ...


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A prop is actually a wing. If you've seen the shock wave of a supersonic jet you see how it actually comes at a higher degree away from the aircraft wing, like a 45+ degree angle. It seems like it would just flow along side the jet,but it's like trying to push too much water out of a dam, if the opening is too small the pressure of all the force balls up. ...



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