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| hel·i·cop·ter: Noun ~ A type of aircraft that derives both lift and propulsion from one or two sets of horizontally revolving overhead rotors. |
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BLOG | AERODYNAMICS | FORUM | PICTURES | ABOUT |
| hel·i·cop·ter: Noun ~ A type of aircraft that derives both lift and propulsion from one or two sets of horizontally revolving overhead rotors. |
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