Assertion: glider's wing | /r/HasProperty | efficient
Facets:
value: structurally
type: DEGREE
value: aerodynamically
type: DEGREE
Source sentences:
text: To be aerodynamically efficient, a wing should be straight with a long span from side to side but have a short chord (high aspect ratio).
text: But to be structurally efficient, and hence lightweight, a wing must have a short span but still enough area to provide lift (low aspect ratio).
text: The sailplane-like wings were so efficient that the aircraft jumped into the air at 70 knots (81 mph; 130 km/h), amazing LeVier who, as he later said, "had no intentions whatsoever of flying".
text: To be aerodynamically efficient, a wing should be straight with a long span from side to side but have a short chord (high aspect ratio).
text: But to be structurally efficient, and hence light weight, a wing must have a short span but still enough area to provide lift (low aspect ratio).