My designed aircraft has a drag coefficient of about 0.34, do you think it would fly with 2 brushless motors.?

by admin on February 23, 2010

i have built an rc model of it but i havent tested it yet.

You are missing several specifications.

Drag is dependent on not only the coefficient but the frontal surface area as well. My full sized aircraft has a zero-lift drag coefficient of 0.0319.

You also have to consider the weight of the aircraft. Even the most slippery aircraft will not fly if there no excess power available for it to climb.

The best thing to do is install the motors and see if it works.

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  • Karle

    only 1 way to find out…….test it
    References :

  • Airmech

    How much does it weigh?

    Get a fish scale and hang it from the ceiling and hang the airplane by it by the tail. Record the weight of the plane, then run the motor at full speed and read the weight. If the thrust is more than half of the weight it will fly.
    References :

  • calnickel

    You are missing several specifications.

    Drag is dependent on not only the coefficient but the frontal surface area as well. My full sized aircraft has a zero-lift drag coefficient of 0.0319.

    You also have to consider the weight of the aircraft. Even the most slippery aircraft will not fly if there no excess power available for it to climb.

    The best thing to do is install the motors and see if it works.
    References :

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