[[Image:Man flying kite.jpg|thumb|left|A man flying a kite on the [[beach]], a good location for flying as winds travelling across the sea contain few [[turbulence|up or down draughts]] which cause kites to fly erratically.]]
پتنگ ایک دھاگے کی مدد سے اڑان بھرنے والا طائر ہے۔<ref>[http://www.grc.nasa.gov/WWW/K-12/airplane/guided.htm ''Beginner's Guide to Aeronautics'', [[NASA]]]</ref> اس کی اڑان کے لئے ضروری قوت اس کے پروں کے اوپر اور نیچے کی جانب ہوا کے دباؤ پر منحثر ہے۔ پتنگ کے اوپری جانب کم دباؤ اور نیچے کی جانب زیادہ دباؤ کی وجہ سے پتنگ اڑتا ہے۔
پتنگ ایک دھاگے کی مدد سے اڑان بھرنے والا طائر ہے۔<ref>[http://www.grc.nasa.gov/WWW/K-12/airplane/guided.htm ''Beginner's Guide to Aeronautics'', [[NASA]]]</ref> The necessary [[Lift (force)|lift]] that makes the kite wing fly is generated when air (or in some cases water)<ref>[http://2lo.de/kitedive/index.htm Underwater kiting]</ref><ref>[http://www.google.com/patents?id=xldbAAAAEBAJ Hydro kite angling device Jason C. Hubbart.]</ref><ref>[http://www.google.com/patents?id=6plmAAAAEBAJ Underwater kite F. G. Morrill.]</ref> flows over and under the kite's wing, producing low pressure above the wing and high pressure below it. This deflection also generates horizontal [[Drag (physics)|drag]] along the direction of the wind. The resultant force vector from the lift and drag force components is opposed by the tension of the one or more [[rope|lines]] or [[tether]]s.<ref>[http://www.kitelife.com/magazine/issue39/altitude39/content.php Flying High, Down Under] When the kite line broke, the kites still received tension from the very long kite line.</ref> The anchor point of the kite line may be static or moving (e.g., the towing of a kite by a running person, boat,<ref>[http://cires.colorado.edu/science/field/kites/ ''Science in the Field'': Ben Balsley, [[CIRES]] Scientist in the Field Gathering atmospheric dynamics data using kites. Kites are anchored to boats on Amazon River employed to sample levels of certain gases in the air.]</ref> or vehicle).<ref>[http://uboat.net/technical/bachstelze.htm The Bachstelze Article describes the Fa-330 Rotary Wing Kite towed by its mooring to the submarine. The kite was a man-lifter modeled after the autogyro principle.]</ref><ref>[http://www.drachen.org/journals/journal22/Journal-22/TalStreet.pdf Kite Fashions: Above, Below, Sideways. Expert kiter sometimes ties a flying kite to a tree to have the kite fly for days on end.]</ref>
پتنگ اکثر ہوا سے بھی وزن دار ہوتے ہیں، انہیں اڑان بھرنے کے لئے ہوا کے جھونکوں کی ضرورت پڑتی ہے۔
