Keywords: sdasm aviation aeronautics san diego air and space museum sandiegoairandspacemuseum ryan “ryan aeronautical” “san diego” “lindbergh field” yo-51 yo51 dragonfly stol aircraft airplane short take-off and landing shorttakeoffandlanding observation aircraft observationaircraft observation plane observationplane ryan aeronautical ryanaeronautical ryan yo-51 dragonfly ryanyo51dragonfly ryan yo-51 ryanyo51 ryan dragonfly ryandragonfly yo-51 dragonfly yo51dragonfly pratt & whitney prattwhitney p&w pw pratt & whitney r-985 prattwhitneyr985 r-985 r985 pratt & whitney wasp junior prattwhitneywaspjunior r-985 wasp junior r985waspjunior wasp junior waspjunior pratt & whitney r-985 wasp junior prattwhitneyr985waspjunior r-985-21 r98521 flaps monochrome blackandwhite photo border outdoor black and white Ryan YO-51 Dragon Fly Repository: San Diego Air and Space Museum Archive Ryan YO-51 Dragon Fly Repository: San Diego Air and Space Museum Archive |