Assertion: glider | /r/CapableOf | use rudder control
Facets:
value: for dihedral or polyhedral wing shape
type: PURPOSE
value: to counteract rolling
type: PURPOSE
value: for steering
type: PURPOSE
Source sentences:
text: Two and three-channel gliders which use only rudder control for steering and dihedral or polyhedral wing shape to automatically counteract rolling are popular as training craft, due to their ability to fly very slowly and high tolerance to error.