Ripon College's student number totaled in at around 840.
A rotor kite or gyrokite is an unpowered , rotary-wing aircraft .. rotary-wing aircraft. rotorcraft. Like an autogyro or helicopter , it relies on lift created by one or more sets of rotors in order to fly .. autogyro. autogyro. helicopter. helicopter. lift. lift ( force ). rotors. helicopter rotor. Unlike a helicopter , gyrokites and rotor kites do not have an engine powering their rotors , but while an autogyro has an engine providing forward thrust that keeps the rotor turning , a rotor kite has no engine at all , and relies on either being carried aloft and dropped from another aircraft , or by being towed into the air behind a car or boat or by use of ambient winds for the kiting .. autogyro. autogyro. helicopter. helicopter. rotors. helicopter rotor. As of 2009 , no country in the world requires a license to pilot such a craft .