Abstract: A plurality of spaced apart, flexible string hinges pivotally join an airfoil of a model airplane to its corresponding flight control element. Such string hinges are shown in use for pivotally joining an aileron to a wing, a rudder to a tail fin and an elevator or flap to a horizontal stabilizer to permit rolling, yawing, and pitching movement, respectively, of the airplane when in flight. In one embodiment, a plurality of string hinges are connected by means of conventional airplane glue between a series of spaced apart blind holes formed in a leading edge portion of an aileron and similarly spaced apart reinforcing ribs of a wing. In another embodiment, a plurality of string hinges extend between blind holes formed in a solid balsa aileron and holes formed through a trailing edge spar of a wing and are secured at opposite ends by glue or epoxy. Examples of string hinges used to pivotally join a rudder to a tail fin and an elevator to a horizontal stabilizer in a model airplane are also disclosed.

Abstract: A plurality of spaced apart, flexible string hinges pivotally join an airfoil of a model airplane to its corresponding flight control element. Such string hinges are shown in use for pivotally joining an aileron to a wing, a rudder to a tail fin and an elevator or flap to a horizontal stabilizer to permit rolling, yawing, and pitching movement, respectively, of the airplane when in flight. In one embodiment, a plurality of string hinges are connected by means of conventional airplane glue between a series of spaced apart blind holes formed in a leading edge portion of an aileron and similarly spaced apart reinforcing ribs of a wing. In another embodiment, a plurality of string hinges extend between blind holes formed in a solid balsa aileron and holes formed through a trailing edge spar of a wing and are secured at opposite ends by glue or epoxy. Examples of string hinges used to pivotally join a rudder to a tail fin and an elevator to a horizontal stabilizer in a model airplane are also disclosed.