Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Cooper_vane> ?p ?o }
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- Cooper_vane abstract "A Cooper vane (also sometimes called a Dan Cooper switch or D.B. Cooper device) is a mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered in flight. In the United States, following three hijackings in 1972, the Federal Aviation Administration ordered that Boeing 727 aircraft be fitted with Cooper vanes. The device was named for an unidentified airplane hijacker dubbed D. B. Cooper, who used the rear stairway to exit a Boeing 727 in flight and make his escape via parachute.The Cooper vane is a very simple device consisting of a spring-loaded paddle connected to a plate. When the aircraft is on the ramp, the spring keeps the paddle perpendicular to the fuselage, and the attached plate does not block the stairway. As the aircraft takes off, the airflow pushes the paddle parallel to the fuselage and the plate is moved underneath the stairway, preventing it from being lowered. Once the airflow decreases on landing, the spring-loaded paddle returns to its initial position, thereby allowing the stairs to be lowered again. Although this device was intended to prevent hijackings aboard the 727 and other aircraft with a ventral airstair, many airlines sealed the airstair entirely, never to use it again.Douglas DC 9 aircraft with ventral stairs were also equipped with Cooper vanes. The DC 9-21 used for skydiving at the 2006 World Free Fall Convention in Rantoul, Illinois, had one installed, but since the rear pressure bulkhead door and the stairs had been removed to facilitate fast jumper exits, the vane, which was left in place, did not prevent jumps.".
- Cooper_vane thumbnail 727db.gif?width=300.
- Cooper_vane wikiPageID "1012000".
- Cooper_vane wikiPageLength "2794".
- Cooper_vane wikiPageOutDegree "14".
- Cooper_vane wikiPageRevisionID "680750294".
- Cooper_vane wikiPageWikiLink Aerodynamics.
- Cooper_vane wikiPageWikiLink Aircraft_hijacking.
- Cooper_vane wikiPageWikiLink Airport_apron.
- Cooper_vane wikiPageWikiLink Airstair.
- Cooper_vane wikiPageWikiLink Boeing_727.
- Cooper_vane wikiPageWikiLink Category:Aircraft_doors.
- Cooper_vane wikiPageWikiLink Category:Locks_(security_device).
- Cooper_vane wikiPageWikiLink D._B._Cooper.
- Cooper_vane wikiPageWikiLink Federal_Aviation_Administration.
- Cooper_vane wikiPageWikiLink Fuselage.
- Cooper_vane wikiPageWikiLink Parachute.
- Cooper_vane wikiPageWikiLink Wedge_(mechanical_device).
- Cooper_vane wikiPageWikiLink File:727db.gif.
- Cooper_vane wikiPageWikiLink File:Db_Cooper_Vane.JPG.
- Cooper_vane wikiPageWikiLinkText "Cooper vane".
- Cooper_vane wikiPageWikiLinkText "vanes".
- Cooper_vane subject Category:Aircraft_doors.
- Cooper_vane subject Category:Locks_(security_device).
- Cooper_vane hypernym Wedge.
- Cooper_vane type Person.
- Cooper_vane type Component.
- Cooper_vane type Redirect.
- Cooper_vane comment "A Cooper vane (also sometimes called a Dan Cooper switch or D.B. Cooper device) is a mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered in flight. In the United States, following three hijackings in 1972, the Federal Aviation Administration ordered that Boeing 727 aircraft be fitted with Cooper vanes. The device was named for an unidentified airplane hijacker dubbed D. B.".
- Cooper_vane label "Cooper vane".
- Cooper_vane sameAs Q5167849.
- Cooper_vane sameAs Cooper_vane.
- Cooper_vane sameAs m.03z2l8.
- Cooper_vane sameAs Q5167849.
- Cooper_vane wasDerivedFrom Cooper_vane?oldid=680750294.
- Cooper_vane depiction 727db.gif.
- Cooper_vane isPrimaryTopicOf Cooper_vane.