About: http://webisa.webdatacommons.org/293407454

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In general, rotorcraft such as helicopters are subjected to large vibrations during flight as compared with fixed-wing aircraft, and this is attributable mainly to the forces and moment exciting forces from a rotor.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com