Scaled Composites
An American aerospace design and prototyping company recognized for unconventional composite aircraft, experimental spacecraft, and rapid-development engineering.
Last updated August 26, 2026
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Overview
Scaled Composites is an American aerospace company founded in 1982 by aircraft designer Burt Rutan. Based at the Mojave Air and Space Port in California, it was established to design and build experimental aircraft and has become associated with unconventional configurations, composite structures, rapid prototyping, and privately funded spaceflight. Rather than operating primarily as a mass-production aircraft manufacturer, Scaled has generally worked as a specialized design, engineering, fabrication, and flight-test organization for advanced vehicles and demonstrators. The company emerged from Rutan's earlier work on innovative homebuilt and experimental aircraft, including the VariViggen, VariEze, Long-EZ, Defiant, Quickie, and Voyager. Its design language often incorporated canards, winglets, pusher propellers, unusual fuselage arrangements, and extensive use of non-metallic composite materials. Scaled's projects have covered civil aircraft, military demonstrators, spacecraft, launch-support vehicles, marine structures, automotive concepts, and specialized government research work. Scaled changed ownership several times during its early history. Beech Aircraft acquired the company in 1985 in connection with the Starship program. Beech's parent, Raytheon, sold it back to Rutan in 1988. The business was later associated with Wyman-Gordon and Precision Castparts before Rutan and investors reacquired it as Scaled Composites, LLC. Northrop Grumman, which had held a substantial minority interest, agreed to acquire the remaining ownership in 2007; the transaction was completed that August. Rutan remained involved as a senior manager for several years and retired in 2011. The company's most internationally significant program was SpaceShipOne, a privately funded, rocket-powered suborbital spacecraft developed with financial backing from Microsoft co-founder Paul Allen. SpaceShipOne was carried aloft by the White Knight aircraft and made the first privately funded human spaceflight in June 2004. Two later flights, completed in September and October 2004, satisfied the requirements of the Ansari X Prize. The achievement established Scaled as a prominent participant in the emerging commercial-space sector and demonstrated the potential of composite structures, air-launch systems, and reusable suborbital vehicles. Scaled subsequently contributed to SpaceShipTwo and its White Knight carrier aircraft for Virgin Galactic. It also built the Model 351, known as Roc, for Stratolaunch Systems. Roc was designed as a very large twin-fuselage carrier aircraft capable of supporting air-launch missions. Other notable work has included the GlobalFlyer, which Steve Fossett used for record-setting flights, the Voyager long-range aircraft, the General Motors Ultralite concept, America's Cup catamaran structures, Navy landing-craft research, aircraft evaluation, and military technology demonstrators. The company has also experienced serious safety incidents. A 2007 ground-test explosion during SpaceShipTwo propulsion-system work killed three employees and injured three others. In 2014, the SpaceShipTwo vehicle VSS Enterprise broke apart during a powered test flight, killing one pilot and seriously injuring the other. The National Transportation Safety Board concluded that premature deployment of the vehicle's feathering system directly led to the breakup. These events became important examples of the hazards associated with experimental flight testing and commercial-space development. Scaled's present identity is that of a specialized Northrop Grumman aerospace subsidiary focused on advanced concepts, composite structures, prototype fabrication, integration, and flight testing. Its reputation rests less on a consumer-facing product portfolio than on difficult, highly visible engineering programs that seek new approaches to aircraft and spacecraft design.
History
Scaled Composites was established in 1982 by Burt Rutan to pursue experimental aircraft design and construction. Its origins lay in Rutan's earlier work on homebuilt aircraft, whose canard layouts, winglets, pusher propellers, and composite construction challenged conventional general-aviation practice. Early company work included the Starship project, which led Beech Aircraft to acquire Scaled in 1985. Raytheon, Beech's parent, returned the business to Rutan in 1988. After subsequent ownership through Wyman-Gordon and Precision Castparts, Rutan and a group of investors reacquired the company and operated it as Scaled Composites, LLC. Scaled's projects expanded from light aircraft into long-range aircraft, government research, marine structures, automotive concepts, military demonstrators, and spacecraft. The Voyager became the first aircraft to circumnavigate the world without refueling or stopping. The company also built the GlobalFlyer, which supported Steve Fossett's solo nonstop flight around the world and later a record-setting longest flight. In 2003, Scaled announced its privately funded SpaceShipOne program. The spacecraft was air-launched from White Knight and used a rocket motor for suborbital flight. It made the first privately funded human spaceflight on June 21, 2004, and two subsequent flights won the Ansari X Prize in October of that year. Scaled later developed SpaceShipTwo and related carrier aircraft for Virgin Galactic, extending its role in commercial-space technology. Northrop Grumman announced its plan to acquire the company in 2007 and completed the transaction on August 24. The acquisition preserved Scaled's identity and general strategy, while placing its experimental design capability within a major aerospace and defense group. Rutan retired in 2011. Later presidents included Ben Diachun and Cory Bird. The company faced major safety events during SpaceShipTwo development. A July 2007 propulsion-system ground-test explosion killed three employees and injured three. On October 31, 2014, VSS Enterprise broke apart during a powered test flight. The accident killed pilot Michael Alsbury and seriously injured pilot Peter Siebold. In 2015, the NTSB attributed the breakup directly to premature deployment of the feathering system, while also examining broader organizational and design factors. Scaled has continued to be identified with advanced composite prototyping and experimental aerospace development, including work on very large air-launch platforms such as Stratolaunch's Model 351 Roc and newer advanced-aircraft demonstrators.
- 2015
NTSB publishes final accident findings
[1]The NTSB identifies premature feather deployment as the direct cause of the 2014 breakup.
- 2014
VSS Enterprise accident
[1]SpaceShipTwo breaks apart during powered testing, resulting in one fatality and one serious injury.
- 2011
Burt Rutan retires
[1]The company's founder retires from Scaled after nearly three decades of involvement.
- 2007
Northrop Grumman acquisition completed
[1]Northrop Grumman completes its acquisition of Scaled Composites on August 24.
- 2004
First privately funded human spaceflight
[1]SpaceShipOne completes its first privately funded human spaceflight from Mojave.
- 2004
SpaceShipOne wins the Ansari X Prize
[1]Two qualifying flights in September and October secure the prize for Scaled and its SpaceShipOne program.
- 2003
SpaceShipOne program announced
[1]Scaled announces a privately funded spacecraft project intended to compete for the Ansari X Prize.
- 1988
Scaled returns to Rutan
[1]Raytheon sells Scaled back to Burt Rutan.
- 1986
Voyager completes a nonstop global flight
[1]The Rutan-designed Voyager becomes the first aircraft to fly around the world nonstop and without refueling.
- 1985
Beech Aircraft acquires Scaled
[1]Beech Aircraft purchases the company in connection with work on the Starship aircraft.
Products and positioning
Specialized, high-risk, innovation-led aerospace design and prototyping with an emphasis on composite construction, unconventional configurations, rapid development, and experimental flight.
Experimental suborbital spacecraft · 2003
SpaceShipOne
A privately funded, rocket-powered suborbital spacecraft carried by the White Knight aircraft. SpaceShipOne completed the first privately funded human spaceflight and won the Ansari X Prize through two qualifying flights in 2004. Its program demonstrated an air-launch architecture, reusable vehicle operations, and composite construction for crewed suborbital flight.
Commercial suborbital spacecraft
SpaceShipTwo
A larger successor to SpaceShipOne developed for Virgin Galactic and intended for commercial suborbital missions. Scaled Composites built the initial vehicle and supported its test program. The first vehicle, VSS Enterprise, was destroyed during a 2014 powered test accident, after which later development continued under Virgin Galactic and other organizational arrangements.
Air-launch carrier aircraft
White Knight
A carrier aircraft designed to transport SpaceShipOne to altitude before release. White Knight formed the airborne first stage of the SpaceShipOne system and enabled the spacecraft to begin its rocket-powered trajectory from above the ground. The aircraft exemplified Scaled's integration of carrier platforms with experimental spacecraft.
Long-range experimental aircraft · 2005
GlobalFlyer
A single-jet, highly fuel-efficient aircraft designed by Burt Rutan and built by Scaled Composites. Steve Fossett used it for a solo nonstop, non-refueled circumnavigation of Earth in 2005. The aircraft later supported a record-setting longest flight, demonstrating the company's ability to combine lightweight composite construction with extreme range.
Air-launch carrier aircraft
Model 351 Roc
A very large twin-fuselage carrier aircraft built for Stratolaunch Systems. Known as Roc, it was intended to provide an airborne platform for launching space vehicles. Its design uses two parallel fuselages, an exceptionally wide wingspan, numerous landing-gear wheels, and a long runway requirement, making it one of the most distinctive aircraft projects undertaken by Scaled.
Long-range experimental aircraft · 1986
Voyager
A lightweight, highly efficient aircraft designed for extreme range. Voyager became notable for completing the first nonstop, non-refueled flight around the world. Its composite structure and unconventional configuration helped establish the technical reputation of the Rutan design group and Scaled's broader approach to advanced aircraft.
Military technology demonstrator
Model 437 Vanguard
A multi-mission military demonstrator conceived with both manned and unmanned operational possibilities. It represents Scaled's continuing work on advanced configurations and prototype aircraft for defense-related applications rather than a conventional high-volume production line.
Controversies
2014
VSS Enterprise in-flight breakup
SpaceShipTwo VSS Enterprise broke apart during a powered test flight. Pilot Michael Alsbury died and pilot Peter Siebold was seriously injured. The vehicle was destroyed, making the accident one of the most serious setbacks in the early commercial-spaceflight program.
2007
SpaceShipTwo ground-test explosion
An explosion during testing of SpaceShipTwo systems killed three Scaled employees and injured three others. The incident highlighted the hazards of testing nitrous-oxide propulsion-related systems and prompted scrutiny of safety practices in experimental commercial-space development.
Marketing campaigns
- 2004SpaceShipOne first privately funded human spaceflight
United States · Global
The June 21 flight demonstrated the company's air-launch and suborbital-flight architecture and generated worldwide attention for private spaceflight.
Outcome. The flight was successful and became a landmark in commercial-space history.
- 2003SpaceShipOne Ansari X Prize campaign
United States · International space and aerospace community
Scaled publicly presented SpaceShipOne as an attempt to win the prize for the first privately funded crewed spaceflight. The effort combined private investment, an air-launched spacecraft, reusable operations, and a small experimental development team.
Outcome. The campaign succeeded when SpaceShipOne completed the required flights and won the Ansari X Prize in 2004.
Brand decisions
2007
Northrop Grumman acquires Scaled CompositesM&ABackground
Scaled had moved through several ownership arrangements while continuing to operate as an experimental design and prototyping business. Northrop Grumman already held a significant minority interest before announcing its plan to acquire the company outright.
Action taken
Northrop Grumman announced the acquisition in July and completed it on August 24, 2007.
Aftermath
Both companies stated that the transaction was not intended to change Scaled's strategy or immediately replace Burt Rutan as senior manager.
2003
Launch of the SpaceShipOne development programProduct launchBackground
Scaled sought to demonstrate that a privately funded team could develop and operate a crewed suborbital spacecraft.
Action taken
The company announced SpaceShipOne and began flight-testing the spacecraft with the White Knight carrier aircraft.
Aftermath
The program achieved the first privately funded human spaceflight and won the Ansari X Prize in 2004.
Recent events
Northrop unveils Scaled Composites Model 437 UAS design[3]
Reported:
Northrop Grumman unveiled the Scaled Composites Model 437, a low-cost unmanned aircraft system derived from its Model 401 demonstrator; the Model 437 remained a paper concept.
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