Unpowered aircraft (original) (raw)
Unpowered aircraft can remain airborne for a significant period of time without onboard propulsion. They can be classified as fixed-wing gliders, lighter-than-air balloons and tethered kites. This requires a trajectory that is not merely a vertical descent such as a parachute. In the case of kites, lift is obtained by tethering to a fixed or moving object, perhaps another kite, to obtain a flow of wind over the lifting surfaces. In the case of balloons, lift is obtained through inherent buoyancy and the balloon may or may not be tethered. Free balloon flight has little directional control. Gliding aircraft include sailplanes, hang gliders, and paragliders that have full directional control in free flight.
| Property | Value |
|---|---|
| dbo:abstract | Unpowered aircraft can remain airborne for a significant period of time without onboard propulsion. They can be classified as fixed-wing gliders, lighter-than-air balloons and tethered kites. This requires a trajectory that is not merely a vertical descent such as a parachute. In the case of kites, lift is obtained by tethering to a fixed or moving object, perhaps another kite, to obtain a flow of wind over the lifting surfaces. In the case of balloons, lift is obtained through inherent buoyancy and the balloon may or may not be tethered. Free balloon flight has little directional control. Gliding aircraft include sailplanes, hang gliders, and paragliders that have full directional control in free flight. (en) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Hanggliding03042006.jpg?width=300 |
| dbo:wikiPageExternalLink | http://www.fai.org |
| dbo:wikiPageID | 38847 (xsd:integer) |
| dbo:wikiPageLength | 5935 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1089507058 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Potential_energy dbr:Balloon_(aircraft) dbr:Kytoon dbr:Military_glider dbr:Paragliding dbr:Colditz dbr:George_Cayley dbr:German_Navy dbr:Gimli_Glider dbr:Montgolfier_brothers dbr:Lift_(soaring) dbr:Glider_aircraft dbr:Gliding_competitions dbr:Balloon_(aeronautics) dbc:Unpowered_flight dbr:Barrage_balloon dbr:Glider_(sailplane) dbr:Gliding dbr:Hang_gliding dbr:Parachute dbc:Unpowered_aircraft dbr:Colditz_Cock dbr:Thermal dbr:Buoyancy dbr:Kite_control_systems dbr:Kite dbr:Kite_balloon dbr:Kite_line dbr:Kite_types dbr:Rotor_kite dbr:Paraglider dbr:Hang_glider dbr:High_altitude_wind_power dbr:Gyroglider dbr:File:Hanggliding03042006.JPG |
| dbp:wikiPageUsesTemplate | dbt:Citation_needed dbt:Commons dbt:Main dbt:Reflist dbt:Short_description dbt:Aircraft_types_(by_method_of_thrust_and_lift) |
| dct:subject | dbc:Unpowered_flight dbc:Unpowered_aircraft |
| rdfs:comment | Unpowered aircraft can remain airborne for a significant period of time without onboard propulsion. They can be classified as fixed-wing gliders, lighter-than-air balloons and tethered kites. This requires a trajectory that is not merely a vertical descent such as a parachute. In the case of kites, lift is obtained by tethering to a fixed or moving object, perhaps another kite, to obtain a flow of wind over the lifting surfaces. In the case of balloons, lift is obtained through inherent buoyancy and the balloon may or may not be tethered. Free balloon flight has little directional control. Gliding aircraft include sailplanes, hang gliders, and paragliders that have full directional control in free flight. (en) |
| rdfs:label | Unpowered aircraft (en) |
| owl:sameAs | dbpedia-commons:Unpowered aircraft freebase:Unpowered aircraft wikidata:Unpowered aircraft https://global.dbpedia.org/id/g7YL |
| prov:wasDerivedFrom | wikipedia-en:Unpowered_aircraft?oldid=1089507058&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Hanggliding03042006.jpg |
| foaf:isPrimaryTopicOf | wikipedia-en:Unpowered_aircraft |
| is dbo:wikiPageWikiLink of | dbr:DUATS dbr:Powered_aircraft dbr:List_of_Air_Ministry_specifications dbr:Glider_(aircraft) dbr:Glider_(sailplane) dbr:Glider_types dbr:Thermal dbr:Range_(aeronautics) dbr:Léo_Valentin dbr:Unpowered_flight |
| is foaf:primaryTopic of | wikipedia-en:Unpowered_aircraft |
