New answers tagged aircraft
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I happen to have attended the ATW (Aerospace Thematic Workshop) twice in 3 years, so I can give you some first insight.
I do not know precisely when plasma flow control was first experimented on, however this field gathers a quickly increasing amount of researchers around the world.
The reason for that is that, before, people could use continuous DC ...
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You move with the plane because kinetically you are part of the plane's body. When you sit or walk in the plane gravity attaches you to the floor/body. you are going with the same velocity as the plane as everything in it. If you throw a ball in the air it will have the velocity of the plane already so no effect will be seen. We see effects in the plane when ...
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Objects don't accelerate because they're inside other objects. Objects accelerate because other objects make forces on them. The chain of cause and effect here is that the box can affect the air, then the air can affect the helicopter.
The answer to the question depends on how rapidly the box is accelerated.
To pick an extreme case, suppose that the box is ...
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There are (at least) three popular explanations for lift on an airfoil:
Faster air on the top has lower static pressure than slow moving air on the bottom. The resulting pressure difference multiplied by the area is equal to the lift.
The airfoil deflects air downward and by Newton's 3rd law an equal and opposite force (lift) is applied to the wing.
Bound ...
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To think of Bernoulli's principle as opposed to something else is not right. Bernoulli's principle can be thought of as the reason for the something else.
Take a look at John Denker's explanation. It's the best I've seen.
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