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39-505: Sikorsky developed the X2 helicopter on a $ 50 million budget. The design includes expertise gathered from several earlier design projects. The S-69/XH-59A Advancing Blade Concept Demonstrator had shown that high speed was possible with a coaxial helicopter with auxiliary propulsion supplied using two jet engines, but that vibration and fuel consumption was excessive; the Cypher UAV expanded

78-549: A ducted pusher propeller at the tail. This proposed program did not proceed as Sikorsky refused to pay a share of the costs. Sikorsky and its partners funded the development of the next helicopters using the Advancing Blade Concept, the Sikorsky X2 and Sikorsky S-97 Raider , from 2007. The Advancing Blade Concept system consisted of two rigid, contra-rotating rotors (30 inches apart) which made use of

117-574: A four-phase flight test program, to culminate with reaching a planned 250-knot top speed. The X2 completed flights with its propeller fully engaged in July 2009. Sikorsky completed phase three of the testing with the X2 reaching 181 knots in test flight in late May 2010. On 26 July 2010, Sikorsky announced that the X2 exceeded 225 knots (259 mph; 417 km/h) during flight testing in West Palm Beach Florida, unofficially surpassing

156-453: A helicopter, the XH-59A demonstrated a maximum level speed of 156 knots (289 km/h; 180 mph), but with the auxiliary turbojets, it demonstrated a maximum level speed of 238 knots (441 km/h; 274 mph) and eventually a speed of 263 knots (487 km/h; 303 mph) in a shallow dive. At 180 knots (333 km/h; 207 mph) level flight, it could enter a 1.4 g bank turn with

195-649: A language other than English at home, and 45.1% were born outside the United States, 60.1% of whom were naturalized citizens . The median income for a household in the CDP was $ 137,722, and the median income for a family was $ 155,000. 4.8% of the population were military veterans , and 59.2% had a bachelor's degree or higher . In the CDP3.8% of the population was below the poverty line , including 6.5% of those under age 18 and 2.2% of those age 65 or over, with 9.8% of

234-471: A shallow 2˚ to 3˚ dive, which was just short of the 303 mph achieved by the Sikorsky S-69 technology demonstrator helicopter. Sikorsky states that the X2 has the same noise level at 200 knots that a regular helicopter has at 100 knots. Above 200 knots, the rotor speed is reduced from 446 to 360 RPM to keep tip speed below Mach 0.9, the rotor disc is slightly nose-up, and the lift-to-drag ratio

273-674: A signer of the Declaration of Independence . During the Civil War , federal troops destroyed by fire the Chantilly Plantation manor house. One building remains, a stone house across Route 50 from the Greenbriar Shopping Center. While it is not clear what this stone house was used for, most historical evidence suggests it was probably a plantation overseer's quarters during the antebellum period, and

312-540: A tavern or boarding house following the war. After the war, Cornelia Stuart, who had become deeply in debt, sold her 1,064-acre (431 ha) Chantilly estate. The advertisement for the sale referenced several "tenements", one of which was the Stone House. The village grew during the 19th century, particularly following the construction of the Little River Turnpike to Winchester . The evolution of

351-463: Is about twice that of a conventional helicopter. Hands-off flying was also successfully performed during flight tests. On 14 July 2011, the X2 completed its final flight and was officially retired after accumulating 22 hours over 23 test flights. With the end of development, the X2 will be followed by its first application, the S-97 Raider high-speed scout and attack helicopter. It was donated to

390-710: Is headquartered adjacent to Washington Dulles International Airport , near Chantilly. At one time, Compass Airlines was headquartered near Chantilly. The headquarters was relocated to Minnesota in late 2009. Residents of the CDP go to Fairfax County Public Schools . Elementary schools serving the CDP include Brookfield Elementary School, Bull Run Elementary School, Greenbriar East Elementary School, Greenbriar West Elementary School, Lees Corner Elementary School, Navy Elementary School, and Poplar Tree Elementary School. Rocky Run Middle School, Franklin Middle School , and Chantilly High School are located within

429-540: Is land and 0.1 square miles (0.3 km ), or 1.07%, is water. Chantilly is part of Sully District in Fairfax County and is governed by the Fairfax County Board of Supervisors . The current supervisor for Sully District is Kathy Smith. At the 2020 census (some information from the 2022 American Community Survey ) there were 24,301 people, 7,716 housing units and 7,187 households residing in

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468-591: Is located between Centreville to the south, Herndon and Reston to the north and northeast, respectively, and Fairfax 7 miles (11 km) to the southeast. U.S. Route 50 and Virginia State Route 28 intersect in Chantilly, and these highways provide access to the Dulles /Reston/ Tysons Corner technology corridor and other major employment centers in Northern Virginia and Washington, D.C. Chantilly

507-480: Is named. Cornelia Lee Turberville Stuart, who was born at Leeton and was the daughter of George Richard Lee Turberville and Henrietta Lee, inherited a portion of Leeton in 1817 from her father. Stuart and her husband Charles Calvert Stuart, whom she had married in 1816, constructed the Chantilly Plantation and named it after the Westmoreland County plantation owned by her grandfather, Richard Henry Lee ,

546-564: Is on display at the Army Aviation Museum , Fort Rucker, Alabama. Data from U.S. Army Aircraft Since 1947, The Illustrated Encyclopedia of Helicopters, US Army Research Laboratory General characteristics Performance Related development Aircraft of comparable role, configuration, and era Related lists Chantilly, Virginia Chantilly is a census-designated place (CDP) in western Fairfax County , Virginia , United States. The population

585-594: The Greenbriar CDP, and to the south by Centreville . To the southwest is Schneider Crossroads, not part of any census-designated area. The present center of Chantilly is located around the intersection of U.S. Route 50 (Lee Jackson Memorial Highway) and Virginia Route 28 (Sully Road). According to the United States Census Bureau , the CDP has a total area of 12.2 square miles (31.5 km ), of which 12.0 square miles (31.1 km )

624-906: The National Air and Space Museum in October 2016 and is on display in the Steven F. Udvar-Hazy Center in Chantilly, Virginia . The Sikorsky Aircraft Corporation and the X2 Technology Demonstrator Team was awarded the 2010 Robert J. Collier Trophy by the National Aeronautic Association "...For demonstrating a revolutionary 250 knot helicopter, which marks a proven departure point for the future development of helicopters by greatly increasing their speed, maneuverability and utility." For 2011,

663-418: The CDP. The population density was 2,025.1 inhabitants per square mile (781.6/km ). The average housing unit density was 643.0 per square mile (248.2/km ). The racial makeup of the CDP was 38.75% White , 6.07% African American , 0.62% Native American , 33.57% Asian , 0.03% Pacific Islander , 9.82% from other races , and 11.14% from two or more races. Hispanic or Latino people of any race were 20.13% of

702-722: The Chantilly area into an outer suburb of Washington, D.C., gained momentum after 1980, as developers built residential subdivisions and commercial areas, filling in the farmland south of Dulles Airport. During the American Civil War on September 1, 1862, the Battle of Chantilly (or Ox Hill) was fought nearby. Following his victory at the Second Battle of Bull Run (or Second Manassas), Confederate General Robert E. Lee directed Major General Thomas J. "Stonewall" Jackson to cross Bull Run on August 31 and sweep around

741-607: The X2 , and unveiled a prototype in October 2014. In June 2014, Sikorsky/Boeing submitted the SB-1 Defiant helicopter design for the Future Vertical Lift program based on the X2 principle, which was approved by the Army in October. The X2 first flew on 27 August 2008 from Schweizer Aircraft, a division of Sikorsky Aircraft Corporation's facility at Horseheads, New York . The flight lasted 30 minutes. This began

780-549: The X2 team received the Howard Hughes Award ( American Helicopter Society ). Data from Flug-Revue NOTE: No other specifications have been released by Sikorsky. General characteristics Performance Related development Aircraft of comparable role, configuration, and era Related lists Sikorsky S-69 The Sikorsky S-69 (military designation XH-59 ) is an American experimental compound helicopter developed by Sikorsky Aircraft as

819-404: The aerodynamic lift of the advancing blades. At high speeds, the retreating blades were offloaded, as most of the load was supported by the advancing blades of both rotors and the penalty due to stall of the retreating blade was thus eliminated. This system did not require a wing to be fitted for high speeds and to improve maneuverability, and also eliminated the need for an anti-torque rotor at

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858-597: The battle site. Chantilly is located in western Fairfax County at 38°53′39″N 77°25′52″W  /  38.89417°N 77.43111°W  / 38.89417; -77.43111 (38.894146, −77.431407). It is bordered to the west by the South Riding CDP in Loudoun County , to the north by Washington Dulles International Airport , to the northeast by the Franklin Farm CDP, to the east by

897-554: The company's knowledge of the unique aspects of coaxial flight control laws with a fly-by-wire aircraft; and the RAH-66 Comanche developed expertise in composite rotors and advanced transmission design. Other features include slowed "de-swirling" rigid rotors two feet apart, active force counter-vibration inspired by the Black Hawk , and using most of the power in forward flight for the pusher propeller rather than

936-516: The current FAI rotorcraft world speed record of 216 knots (249 mph; 400 km/h) set by a modified Westland Lynx in 1986. On 15 September 2010, test pilot Kevin Bredenbeck achieved Sikorsky's design goal for the X2 when he flew it at a speed of 250 knots (290 mph; 460 km/h) in level flight, an unofficial speed record for a helicopter. The demonstrator then reached a new record speed of 260 knots (300 mph; 480 km/h) in

975-621: The demonstrator of the co-axial Advancing Blade Concept (ABC) with United States Army and NASA funding. In late 1971, the Army Air Mobility Research and Development Laboratory, which later became a part of the Army Research Laboratory , awarded Sikorsky a contract for the development of the first prototype. The S-69 was the demonstrator for the Advancing Blade Concept (ABC). The first S-69 built (73-21941) first flew on July 26, 1973. However, it

1014-408: The drag of the blade. Sikorsky intended to test hub fairings to reduce drag by 40%, and test flew fairings on the hubs themselves but not the central hub fairing ("aero sail") in between the hubs. Sikorsky has since patented a "Standpipe" (fixed tube between rotating rotor axes) suitable for a central hub fairing. On 4 May 2009, Sikorsky unveiled a mockup of a Light Tactical Helicopter derivative of

1053-483: The ensuing battle, which was fought amid a raging storm, both Union generals Stevens and Kearny were killed. The fighting ended at dusk, and Pope's army continued its withdrawal to Fairfax and subsequently to the Washington defenses. Although commercial and residential development now covers most of the Chantilly (Ox Hill) battlefield, the small Ox Hill Battlefield Park preserves a 5-acre (20,000 m ) portion of

1092-451: The estimated median annual income for a household in the CDP was $ 118,991, and the median income for a family was $ 130,280. Male full-time workers had a median income of $ 81,596 versus $ 62,228 for females. The per capita income for the CDP was $ 46,341. About 7.5% of families and 8.9% of the population were below the poverty line, including 14.3% of those under age 18 and 6.2% of those age 65 or over. The American Registry for Internet Numbers

1131-566: The population without health insurance . As of the census of 2010 , there were 23,039 people, 7,218 households, and 5,939 families residing in the CDP. The population density was 1,916.7 people per square mile (740.1/km ). There were 7,403 housing units at an average density of 615.9/sq mi (237.8/km ). The racial makeup of the CDP was 57.6% White , 6.5% African American , 0.3% Native American , 25.2% Asian , 0.1% Pacific Islander , 6.1% some other race , and 4.3% from two or more races. Hispanic or Latino people of any race were 15.9% of

1170-415: The population. Of the households, 68.9% were married couple families, 10.4% were a male family householder with no spouse, and 17.6% were a female family householder with no spouse. The average family household had 3.56 people. The median age was 40.4, 24.2% of people were under the age of 18, and 12.8% were 65 years of age or older. The largest ancestry is the 7.3% who had English ancestry , 54.6% spoke

1209-407: The population. There were 7,218 households, out of which 47.8% had children under the age of 18 living with them, 67.0% were headed by married couples living together, 10.6% had a female householder with no husband present, and 17.7% were non-families. Of all households 13.0% were made up of individuals, and 2.4% were someone living alone who was 65 years of age or older. The average household size

Sikorsky X2 - Misplaced Pages Continue

1248-625: The position of Major General John Pope 's Union Army of Virginia at Centreville . Reaching the Little River Turnpike (now U.S. Route 50) northwest of Centreville, Jackson turned southeastward toward Fairfax Court House (now the city of Fairfax ) to strike in rear of Pope's army. During September 1, Pope, apprised of Jackson's movement, began to withdraw toward Fairfax Court House. Late in the day, Jackson clashed with Union forces under Brigadier General Isaac Stevens and Major General Philip Kearny near Ox Hill, west of Fairfax. During

1287-459: The rotor in autorotation , increasing rotor rpm. Airframe stress prevented rotor speed reduction and thus full flight envelope expansion. The XH-59A had high levels of vibration and fuel consumption. The 106-hour test program for the XH-59A ended in 1981. In 1982 it was proposed that the XH-59A be converted to the XH-59B configuration with advanced rotors, new powerplants (two GE T700s ), and

1326-476: The rotor. Unusually for helicopters, the power required for high speed is more than the hover power. The pilot controls the independent propeller power with a thumb wheel on the collective. Test flights and flight simulations were combined to improve test procedure. The fly-by-wire system is provided by Honeywell , the rotor by Eagle Aviation Technologies, anti-vibration technology from Moog Inc , and propeller by Aero Composites. The rotor hub can have 10-20 times

1365-482: The tail. Forward thrust was provided by two turbojets, which allowed the main rotor to only be required to provide lift. It was found to have good hover stability against crosswind and tailwind. With jets installed, it lacked power to hover out of ground effect and used short take-off and landing for safety reasons. Airframe 73-21941 is in storage at the NASA Ames Research Center and 73-21942

1404-830: Was 24,301 as of the 2020 census. Chantilly is named after an early-19th-century mansion and farm, which in turn took the name of an 18th-century plantation that was located in Westmoreland County, Virginia . The name "Chantilly" originated in France with the Château de Chantilly , about 28 miles north of Paris . Located in the Northern Virginia portion of the Washington metropolitan area , Chantilly sits approximately 25 miles (40 km) west of Washington, D.C. , via Interstate 66 and U.S. Route 50 . It

1443-406: Was 3.19, and the average family size was 3.46. In the CDP the population was spread out, with 27.8% under the age of 18, 7.8% from 18 to 24, 28.6% from 25 to 44, 29.3% from 45 to 64, and 6.5% who were 65 years of age or older. The median age was 36.1 years. For every 100 females there were 100.2 males. For every 100 females age 18 and over, there were 98.7 males. For the period 2010 through 2014,

1482-504: Was badly damaged in a low-speed crash on August 24, 1973 due to unexpected rotor forces and insufficient control systems. The airframe was then converted into a wind tunnel testbed, which was tested in the NASA Ames Research Center 40x80 feet full-scale wind tunnel in 1979. A second airframe was completed (73-21942) which first flew on July 21, 1975. After initial testing as a pure helicopter, two auxiliary turbojets were added in March 1977. As

1521-610: Was home to a number of colonial plantations in the 1700s, including the Sully Plantation (now the Sully Historic Site ) built by Richard Bland Lee I . Other plantations included George Richard Lee Turberville's "Leeton Grove" (originally a 5,000+ acre plantation, the main house of which still stands at 4619 Walney Rd.), the John Hutchison Farm, and the Chantilly Plantation, after which Chantilly

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