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- Ellehammer_helicopter abstract "The Ellehammer helicopter was an otherwise-unnamed experimental aircraft built in Denmark in 1912. Based on experiments with models, Jacob Ellehammer constructed a full-size machine equipped with two contra-rotating discs, each of which was fitted with six vanes around its circumference. The pitch of these vanes could be varied in operation by the pilot, an early example of cyclic control. The same engine that drove the rotors also powered a propeller mounted tractor-wise to the aircraft's frame. After a number of indoor tests, the aircraft was demonstrated outdoors and made a number of free take-offs. One of these trials was witnessed by Prince Axel of Denmark. Experiments with the helicopter continued until September 1916, when it tipped over during take-off, destroying its rotors.A famous photo shows it hovering in 1914, though there is no evidence that it was successful in achieving translational flight. Ellehammer later studied a disc-rotor configuration - a compound helicopter with coaxial blades that extended from the hub for hover, and retracted for high speed vertical flight. Although a wind tunnel model was constructed, there's no evidence that anything more was studied.".
- Ellehammer_helicopter designer Jacob_Ellehammer.
- Ellehammer_helicopter manufacturer Jacob_Ellehammer.
- Ellehammer_helicopter numberBuilt "1".
- Ellehammer_helicopter thumbnail Ellehammer_1914.jpg?width=300.
- Ellehammer_helicopter wikiPageID "16099021".
- Ellehammer_helicopter wikiPageRevisionID "596679231".
- Ellehammer_helicopter crew "One pilot".
- Ellehammer_helicopter designer Jacob_Ellehammer.
- Ellehammer_helicopter eng1Hp "36".
- Ellehammer_helicopter eng1Kw "27".
- Ellehammer_helicopter eng1Number "1".
- Ellehammer_helicopter eng1Type "Custom-built radial engine".
- Ellehammer_helicopter firstFlight "1912-09-28".
- Ellehammer_helicopter hasPhotoCollection Ellehammer_helicopter.
- Ellehammer_helicopter manufacturer Jacob_Ellehammer.
- Ellehammer_helicopter metOrEng%3F_ "met".
- Ellehammer_helicopter numberBuilt "1".
- Ellehammer_helicopter perfhide "Y".
- Ellehammer_helicopter rotAreaSqft "130".
- Ellehammer_helicopter rotAreaSqm "12".
- Ellehammer_helicopter rotDiaFt "24".
- Ellehammer_helicopter rotDiaIn "7".
- Ellehammer_helicopter rotDiaM "7.47".
- Ellehammer_helicopter rotNumber "2".
- Ellehammer_helicopter type "Experimental helicopter".
- Ellehammer_helicopter subject Category:Coaxial_rotor_helicopters.
- Ellehammer_helicopter subject Category:Danish_experimental_aircraft_1910–1919.
- Ellehammer_helicopter subject Category:Danish_helicopters_1910–1919.
- Ellehammer_helicopter subject Category:Ellehammer_aircraft.
- Ellehammer_helicopter subject Category:Single-engined_piston_helicopters.
- Ellehammer_helicopter type Aircraft102686568.
- Ellehammer_helicopter type Artifact100021939.
- Ellehammer_helicopter type CoaxialRotorHelicopters.
- Ellehammer_helicopter type Conveyance103100490.
- Ellehammer_helicopter type Craft103125870.
- Ellehammer_helicopter type Heavier-than-airCraft103510583.
- Ellehammer_helicopter type Helicopter103512147.
- Ellehammer_helicopter type Instrumentality103575240.
- Ellehammer_helicopter type Object100002684.
- Ellehammer_helicopter type PhysicalEntity100001930.
- Ellehammer_helicopter type Vehicle104524313.
- Ellehammer_helicopter type Whole100003553.
- Ellehammer_helicopter type Aircraft.
- Ellehammer_helicopter type MeanOfTransportation.
- Ellehammer_helicopter type Product.
- Ellehammer_helicopter type Model_airplane.
- Ellehammer_helicopter type DesignedArtifact.
- Ellehammer_helicopter comment "The Ellehammer helicopter was an otherwise-unnamed experimental aircraft built in Denmark in 1912. Based on experiments with models, Jacob Ellehammer constructed a full-size machine equipped with two contra-rotating discs, each of which was fitted with six vanes around its circumference. The pitch of these vanes could be varied in operation by the pilot, an early example of cyclic control.".
- Ellehammer_helicopter label "Ellehammer helicopter".
- Ellehammer_helicopter sameAs m.03qp433.
- Ellehammer_helicopter sameAs Q5364691.
- Ellehammer_helicopter sameAs Q5364691.
- Ellehammer_helicopter sameAs Ellehammer_helicopter.
- Ellehammer_helicopter wasDerivedFrom Ellehammer_helicopter?oldid=596679231.
- Ellehammer_helicopter depiction Ellehammer_1914.jpg.
- Ellehammer_helicopter isPrimaryTopicOf Ellehammer_helicopter.
