Paper Model Airplanes That Fly
How do you achieve a straight , level flight ?
Say that you have a paper model airplane . And you fly it . How do you achieve a straight level flight ? Can someone explain it to me using the words gravity , air resistance, and lift ? As well as the net force . Thanks (:
Straight and level flight is extremely difficult to achieve in a paper airplane that has no movable control surfaces. In practice, it’s mostly a matter of luck, except under the most tightly controlled flight conditions.
In theory—as opposed to practice—a properly designed paper airplane that is in perfect condition and launched into perfectly still air can achieve a stable glide.
In a computer simulation of a paper airplane, you can achieve straight, level flight, because simulations are perfect by default, unless imperfections are programmed into the simulation (the air is always still by default, the launch of the airplane is always perfect by default, etc.). In real life, it’s the other way around: there are always imperfections, and these imperfections prevent straight and level flight for any significant time or distance unless there are movable control surfaces to compensate for irregularities.
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