Ключевые слова: action, activity, adrenaline, adventure, aerial, aerodynamic, aerodynamics, air, aircraft, airframe, aviation, blue, danger, enginefree, extreme, fearless, flight, fly, flying, free, freedom, fun, glide, glider, gliding, hang, hangglider, high, hobby, leisure, man, motorless, outdoor, pilot, plane, risk, sky, soaring, sport, transport, wind, windy, wing,