Assertion: hang glider's structure | /r/HasProperty | rigid primary
Facets:
Source sentences:
text: Class 5 hang gliders have a rigid primary structure with movable aerodynamic surfaces as the primary method of control and can safely take-off and land in nil-wind conditions.
text: - Hang gliders having a rigid primary structure and controlled by weight shift only and which demonstrate consistent ability to safely take-off and land in nil wind conditions.
text: - Hang gliders having a rigid primary structure and controlled by deflection of aerodynamic control surfaces as the primary method of control in at least one major axis and which demonstrate consistent ability to safely take-off and land in nil wind conditions.
text: - Hang gliders having no rigid primary structure and which demonstrate consistent ability to safely take-off and land in nil wind conditions.