- 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 2008 Trimble, 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 bySikorsky 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 theRAH-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 atHorseheads, New York . The flight lasted 30 minutes and began the flight test program.pecifications
aircraft specifications
plane or copter?= copter
jet or prop?=propcrew= 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 kgengine (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-axialmax 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]
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