Sikorsky X2

Infobox Aircraft
name= X2 Demonstrator


caption= Concept of the Sikorsky X2 Demonstrator
type= Experimental helicopter
manufacturer=Sikorsky Aircraft/Schweizer Aircraft
designer=
first flight= 27 August 2008Trimble, Stephen. [http://www.flightglobal.com/articles/2008/08/27/315257/sikorskys-x2-speedster-completes-first-flight.html "Sikorsky's X2 speedster completes first flight"] , Flightglobal.com, 27 August 2008.]
introduced=
retired=
status= In development/flight testing
primary user=
more users=
produced=
number built=1
unit cost=
developed from =
variants with their own articles =

The Sikorsky X2 Demonstrator is an experimental compound co-axial helicopter under development by Sikorsky Aircraft.

Development

Sikorsky will incorporate decades of company research and development into X2 Technology helicopters, including: the S-69/XH-59A Advancing Blade Concept Demonstrator which showed high speed was possible with a coaxial helicopter and auxiliary propulsion, the Cypher UAV which expanded company knowledge of the unique aspects of flight control laws in a fly by wire aircraft that employed coaxial rotors, and the RAH-66 Comanche, which developed expertise in composite rotors and advanced transmission design. [http://www.sikorsky.com/details/0,3036,CLI1_DIV69_ETI2088,00.html Sikorsky to Build and Test X2 Technology Demonstrator Helicopter] , Sikorsky ]

The X2 first flew on 27 August 2008 from Schweizer Aircraft's facility at Horseheads, New York. The flight lasted 30 minutes and began the flight test program.

pecifications

aircraft specifications
plane or copter?= copter
jet or prop?=prop

ref=Flug-Revuecite web |url=http://www.flug-revue.rotor.com/FRtypen/FRSikX2.htm |accessdate=2007-06-25 |title=Sikorsky X2 ] "NOTE: No other specicifications have been released by Sikorsky."

crew= 2
capacity=
length main= ft in
length alt= m
span main= ft in
span alt= m
height main= ft in
height alt= m
area main= ft²
area alt= m²
airfoil=
empty weight main= lb
empty weight alt= kg
loaded weight main= lb
loaded weight alt= kg
useful load main= lb
useful load alt= kg
max takeoff weight main= lb
max takeoff weight alt= 3600 kg

engine (prop)= LHTEC T800-LHT-801
type of prop= turboshaft
number of props= 1
power main= 1300-1800 shp [ [http://www.rolls-royce.com/heliexpo2007/market/applications.htm RR Model 250 Applications] ]
power alt= 1000-1340 kW
power original=

propeller or rotor?=propeller
propellers=1 six-bladed pusher-type
number of propellers per engine=
propeller diameter main=
propeller diameter alt=
more general=
*Rotor: 2 four-bladed co-axial

max speed main= knots
max speed alt= mph, km/h
cruise speed main= 250 knots
cruise speed alt= 287.5 mph, 460 km/h
never exceed speed main= knots
never exceed speed alt= mph, km/h
stall speed main= knots
stall speed alt= mph, km/h
range main= nm
range alt= mi, 1300 km
ceiling main= ft
ceiling alt= m
climb rate main= ft/min
climb rate alt= m/s
loading main= lb/ft²
loading alt= kg/m²
thrust/weight=
power/mass main= hp/lb
power/mass alt= W/kg
more performance=

armament=

avionics=

ee also

aircontent
related=
* Sikorsky S-69

similar aircraft=
* AH-56 Cheyenne
* Kamov Ka-50
* Piasecki X-49

lists=
* List of helicopters

see also=

References

External links

* [http://www.sikorsky.com/sik/innovation/x2_technology.asp Sikorsky X2]
* [http://www.unicopter.com/1465.html Sikorsky X2 (proposed) on unicopter.com]
* [http://www.flug-revue.rotor.com/FRtypen/FRSikX2.htm Flug-Revue X2 page]
* [http://www.flightglobal.com/articles/2007/06/12/214533/x2-marks-the-spot-for-radical-rotor-designs.html "X2 marks the spot for radical rotor designs", FlightGlobal, 12 June 2007]
* [http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=busav&id=news/SIKOR02258.xml "Sikorsky Calls X2 Shape of the Future", Aviation Week, 25 February 2008]
* [http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=defense&id=news/X205218.xml "Sikorsky X2 In Blades-On Ground Tests", Aviation Week, 21 May 2008]
* [http://www.flightglobal.com/articles/2008/07/03/225066/hyper-helos-prototypes-coming-off-the-drawing-board-and-into-the.html "Hyper Helos: Prototypes coming off the drawing board and into the race", Flight International, 3 July 2008]
* [http://www.aviationweek.com/aw/generic/story.jsp?id=news/X208278.xml&headline=First%20Flight%20Of%20Sikorsky%20X2%20Demonstrator&channel=defense "First Flight Of Sikorsky X2 Demonstrator", Aviation Week, 27 August 2008]