The Scaled Composites Model 339 SpaceShipTwo (SS2) is an air-launched
suborbital spaceplane
A spaceplane is a vehicle that can fly and glide like an aircraft in Earth's atmosphere and maneuver like a spacecraft in outer space. To do so, spaceplanes must incorporate features of both aircraft and spacecraft. Orbital spaceplanes te ...
type designed for
space tourism
Space tourism is human space travel for recreational purposes. There are several different types of space tourism, including orbital, suborbital and lunar space tourism.
During the period from 2001 to 2009, seven space tourists made eight s ...
. It is manufactured by
The Spaceship Company, a
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...
-based company owned by
Virgin Galactic.
SpaceShipTwo is carried to its launch altitude by a
Scaled Composites White Knight Two, before being released to fly on into the upper atmosphere powered by its
rocket engine
A rocket engine uses stored rocket propellants as the reaction mass for forming a high-speed propulsive Jet (fluid), jet of fluid, usually high-temperature gas. Rocket engines are reaction engines, producing thrust by ejecting mass rearward, i ...
. It then glides back to
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surf ...
and performs a conventional runway landing.
[ ] The spaceship was officially unveiled to the public on 7 December 2009 at the
Mojave Air and Space Port
The Mojave Air and Space Port at Rutan Field is in Mojave, California, United States, at an elevation of . It is the first facility to be licensed in the United States for horizontal launches of reusable spacecraft, being certified as a ...
in California. On 29 April 2013, after nearly three years of unpowered testing, the first one constructed successfully performed its first powered test flight.
Virgin Galactic plans to operate a fleet of five SpaceShipTwo spaceplanes in a
private passenger-carrying service and has been taking bookings for some time, with a suborbital flight carrying an updated ticket price of US$250,000. The spaceplane could also be used to carry scientific payloads for NASA and other organizations.
On 31 October 2014, during a test flight, the first SpaceShipTwo
VSS ''Enterprise'' broke up in flight and crashed in the Mojave desert.
A preliminary investigation suggested that the craft's
descent device deployed too early.
One pilot,
Michael Alsbury, was killed; the other was treated for a serious shoulder injury after parachuting from the stricken spacecraft.
The second SpaceShipTwo spacecraft,
VSS ''Unity'', was unveiled on 19 February 2016. The vehicle is undergoing flight testing.
Its first flight to space (above 50 miles altitude), VSS ''Unity'' VP03, took place on 13 December 2018.
Design overview
The SpaceShipTwo project is based in part on technology developed for the first-generation SpaceShipOne, which was part of the Scaled Composites Tier One program, funded by Paul Allen. The Spaceship Company licenses this technology from Mojave Aerospace Ventures, a joint venture of Paul Allen and Burt Rutan
Elbert Leander "Burt" Rutan (; born June 17, 1943) is a retired American aerospace engineer and entrepreneur noted for his originality in designing light, strong, unusual-looking, and energy-efficient air and space craft. He designed the rec ...
, the designer of the predecessor technology.
SpaceShipTwo is a low-aspect-ratio passenger spaceplane
A spaceplane is a vehicle that can fly and glide like an aircraft in Earth's atmosphere and maneuver like a spacecraft in outer space. To do so, spaceplanes must incorporate features of both aircraft and spacecraft. Orbital spaceplanes te ...
. Its capacity will be eight people — six passengers and two pilots. The apogee
An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion.
General description
There are two apsides in any el ...
of the new craft was designed to be approximately in the lower thermosphere
The thermosphere is the layer in the Earth's atmosphere directly above the mesosphere and below the exosphere. Within this layer of the atmosphere, ultraviolet radiation causes photoionization/photodissociation of molecules, creating ions; the th ...
, higher than the Kármán line but as of July 2021, the maximum height reached was 89.9 km. The predecessor craft, SpaceShipOne's target was also 100 km but the last flight reached an altitude of . SpaceShipTwo was designed to reach , using a single hybrid rocket engine — the RocketMotorTwo
RocketMotorTwo (RM2) is a family of hybrid rocket engines developed for the Scaled Composites SpaceShipTwo suborbital spaceplane.
The first-generation engine was developed by Sierra Nevada Corporation (SNC),Leonard David"Virgin Galactic Pushes Pr ...
. It launches from its mother ship, White Knight Two
The Scaled Composites Model 348 White Knight Two (WK2) is a quadjet cargo aircraft that is used to lift the SpaceShipTwo spacecraft to release altitude. It was developed by Scaled Composites from 2007 to 2010 as the first stage of Tier 1b, a two- ...
, at an altitude of , and reaches supersonic speed within 8 seconds. After 70 seconds, the rocket engine cuts out and the spacecraft will coast to its peak altitude. SpaceShipTwo's crew cabin is long and in diameter. The wing span is , the length is and the tail height is .
SpaceShipTwo uses a feathered reentry system, feasible due to the low speed of reentry. In contrast, orbital spacecraft re-enter at orbital speeds, close to , using heat shields. SpaceShipTwo is furthermore designed to re-enter the atmosphere at any angle. It will decelerate through the atmosphere, switching to a gliding position at an altitude of , and will take 25 minutes to glide back to the spaceport.
SpaceShipTwo and White Knight Two are, respectively, roughly twice the size of the first-generation SpaceShipOne and mothership White Knight
A white knight is a mythological figure and literary stock character. They are portrayed alongside a black knight as diametric opposites. A white knight usually represents a heroic warrior fighting against evil, with the role in medieval literatu ...
, which won the Ansari X Prize in 2004. SpaceShipTwo has -diameter windows for the passengers' viewing pleasure, and all seats will recline back during landing to decrease the discomfort of G-forces. In 2008, Burt Rutan
Elbert Leander "Burt" Rutan (; born June 17, 1943) is a retired American aerospace engineer and entrepreneur noted for his originality in designing light, strong, unusual-looking, and energy-efficient air and space craft. He designed the rec ...
remarked on the safety of the vehicle:
In September 2011, the safety of SpaceShipTwo's feathered reentry system was tested when the crew briefly lost control of the craft during a gliding test flight. Control was reestablished after the spaceplane entered its feathered configuration, and it landed safely after a 7-minute flight.["Virgin Galactic's private spaceship makes safe landing after tense test flight"]
SPACE.com 17 October 2011 Retrieved 18 October 2011
Fleet and launch sites
Fleet history
SpaceShipTwo (and the WhiteKnightTwo
The Scaled Composites Model 348 White Knight Two (WK2) is a quadjet cargo aircraft that is used to lift the SpaceShipTwo spacecraft to release altitude. It was developed by Scaled Composites from 2007 to 2010 as the first stage of Tier 1b, a two- ...
launcher aircraft) are built by The Spaceship Company, originally formed as a joint venture between Scaled Composites and Virgin Galactic. Virgin Galactic bought out Scaled Composites' interest in TSC in 2012, and TSC is now a wholly owned subsidiary of Virgin Galactic.
The launch customer of SpaceShipTwo is Virgin Galactic, who had publicly announced they had ordered five vehicles, but only three had been ordered by 2015. The first SS2 was named VSS ''Enterprise''. The "VSS" prefix stands for "Virgin Space Ship". VSS ''Enterprise'' was the first to fly; it was destroyed in a crash on 31 October 2014. The build of VSS ''Unity'' was about 65% complete in early November 2014, and Virgin Galactic expected it to be complete in 2015. It was unveiled in February 2016 and performed its first powered flight in April 2018. The third SpaceShipTwo was expected to commence construction by the end of 2015.
Launch sites
SpaceShipTwo is launched from the WhiteKnightTwo launcher aircraft, which takes off from the Mojave Air and Space Port
The Mojave Air and Space Port at Rutan Field is in Mojave, California, United States, at an elevation of . It is the first facility to be licensed in the United States for horizontal launches of reusable spacecraft, being certified as a ...
in California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...
during testing. Spaceport America (formerly Southwest Regional Spaceport), a US$212 million spaceport in New Mexico
)
, population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano)
, seat = Santa Fe, New Mexico, Santa Fe
, LargestCity = Albuquerque, New Mexico, Albuquerque
, LargestMetro = Albuquerque metropolitan area, Tiguex
, Offi ...
, partly funded by the state government,[New era draws closer: Spaceport dedicates runway on New Mexico ranch]
''El Paso Times
The ''El Paso Times'' is the newspaper for the US city of El Paso, Texas. The newspaper has an approximate daily circulation of 65,000 and 125,000 on Sundays.
The paper is the only English-language daily in El Paso (when the ''El Paso Herald-Pos ...
'' 23 October 2010 Retrieved 25 October 2010 "two-thirds of the US$212 million required to build the spaceport came from the state of New Mexico... The rest came from construction bonds backed by a tax approved by voters in Doña Ana and Sierra counties". will become the permanent launch site when commercial launches begin.
Ships in class
Two further ships were under construction by 2016. It is unclear whether these are now designated to be SpaceShip III
SpaceShip III (SS3, also with Roman numeral III; formerly SpaceShipThree) is an upcoming class of spaceplanes by Virgin Galactic to follow SpaceShipTwo. It was first teased on the Virgin Galactic Twitter account on 25 February 2021 announcing the ...
class vehicles.
Development
On 28 September 2006, Virgin Group
Virgin Group Ltd. is a British multinational venture capital conglomerate founded by Richard Branson and Nik Powell in February 1970.
Virgin Group's date of incorporation is listed as 1989 by the Companies House, who class it as a holding ...
founder Sir Richard Branson unveiled a mock-up of the SpaceShipTwo passenger cabin at the NextFest exposition at the Jacob K. Javits Convention Center
The Jacob K. Javits Convention Center, commonly known as the Javits Center, is a large convention center on Eleventh Avenue between 34th Street and 38th Street in Hell's Kitchen, Manhattan, New York City. It was designed by architect James ...
in New York
New York most commonly refers to:
* New York City, the most populous city in the United States, located in the state of New York
* New York (state), a state in the northeastern United States
New York may also refer to:
Film and television
* '' ...
. The design of the vehicle was revealed to the press in January 2008, with the statement that the vehicle itself was around 60% complete. On 7 December 2009, the official unveiling and rollout of SpaceShipTwo took place. The event involved the first SpaceShipTwo being christened by then - Governor of California
The governor of California is the head of government of the U.S. state of California. The governor is the commander-in-chief of the California National Guard and the California State Guard.
Established in the Constitution of California, t ...
Arnold Schwarzenegger as the VSS ''Enterprise''.
2007 test explosion
On 26 July 2007, an explosion occurred during an oxidizer
An oxidizing agent (also known as an oxidant, oxidizer, electron recipient, or electron acceptor) is a substance in a redox chemical reaction that gains or " accepts"/"receives" an electron from a (called the , , or ). In other words, an oxid ...
flow test at the Mojave Air and Space Port
The Mojave Air and Space Port at Rutan Field is in Mojave, California, United States, at an elevation of . It is the first facility to be licensed in the United States for horizontal launches of reusable spacecraft, being certified as a ...
, where early-stage tests were being conducted on SpaceShipTwo's systems. The oxidizer test included filling the oxidizer tank with of nitrous oxide
Nitrous oxide (dinitrogen oxide or dinitrogen monoxide), commonly known as laughing gas, nitrous, or nos, is a chemical compound, an oxide of nitrogen with the formula . At room temperature, it is a colourless non-flammable gas, and has ...
, followed by a 15-second cold-flow injector test. Although the tests did not ignite the gas, three employees were killed and three injured by flying shrapnel
Shrapnel may refer to:
Military
* Shrapnel shell, explosive artillery munitions, generally for anti-personnel use
* Shrapnel (fragment), a hard loose material
Popular culture
* ''Shrapnel'' (Radical Comics)
* ''Shrapnel'', a game by Adam ...
.[Abdollah, Tami and Silverstein, Stuart (27 June 2007]
"Test Site Explosion Kills Three"
''Los Angeles Times'' Retrieved 27 July 2007
Rocket engine
The hybrid rocket engine
A hybrid-propellant rocket is a rocket with a rocket motor that uses rocket propellants in two different phases: one solid and the other either gas or liquid. The hybrid rocket concept can be traced back to the early 1930s.
Hybrid rockets avoi ...
design for SpaceShipTwo has been problematic and caused extensive delays to the flight test
Flight testing is a branch of aeronautical engineering that develops specialist equipment required for testing aircraft behaviour and systems. Instrumentation systems are developed using proprietary transducers and data acquisition systems. D ...
program. The original rocket engine design was based on hydroxyl-terminated polybutadiene Hydroxyl-terminated polybutadiene (HTPB) is an oligomer of butadiene terminated at each end with a hydroxyl functional group. It reacts with isocyanates to form polyurethane polymers.
HTPB is a translucent liquid with a color similar to wax pap ...
(HTPB) fuel and nitrous oxide
Nitrous oxide (dinitrogen oxide or dinitrogen monoxide), commonly known as laughing gas, nitrous, or nos, is a chemical compound, an oxide of nitrogen with the formula . At room temperature, it is a colourless non-flammable gas, and has ...
oxidizer, sometimes referred to as an N2O/ HTPB engine. It was developed by Scaled Composites subcontractor Sierra Nevada Corporation (SNC) from 2009 to early 2014. In May 2014, Virgin Galactic announced a change to the hybrid engine to be used in SpaceShipTwo, and took the development effort in-house to Virgin Galactic, terminating the contract with Sierra Nevada and halting all development work on the first-generation rocket engine
A rocket engine uses stored rocket propellants as the reaction mass for forming a high-speed propulsive Jet (fluid), jet of fluid, usually high-temperature gas. Rocket engines are reaction engines, producing thrust by ejecting mass rearward, i ...
. Virgin then modified the engine design to include a change of the hybrid rocket fuel from a HTPB to a polyamide fuel formulation. In October 2015, Virgin announced that it was considering changing back to the original HTPB fuel.
2014 change of engine
Rather than the rubber-based HTPB-fuel engine—engines that had experienced serious engine stability issues on firings longer than approximately 20 seconds — the engine would now be based on a solid fuel composed of a type of plastic called thermoplastic
A thermoplastic, or thermosoft plastic, is any plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling.
Most thermoplastics have a high molecular weight. The polymer chains associat ...
polyamide
A polyamide is a polymer with repeating units linked by amide bonds.
Polyamides occur both naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk. Artificially made polyamides can be made throug ...
. The plastic fuel was projected to have better performance (by several unspecified measures) and was projected to allow SpaceShipTwo to make flights to a higher altitude.
when the version 2 engine by Virgin Galactic was publicly announced, the engine had already completed full-duration burns of over 60 seconds in ground tests on an engine test stand.[ The second-generation engine design also required the modification to the SS2 ]airframe
The mechanical structure of an aircraft is known as the airframe. This structure is typically considered to include the fuselage, undercarriage, empennage and wings, and excludes the propulsion system.
Airframe design is a field of aero ...
to fit additional tanks in the wings of SpaceShipTwo — one holding methane
Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane on Ear ...
and the other containing helium
Helium (from el, ἥλιος, helios, lit=sun) is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. ...
— in order to ensure a proper burn and shut-down of the new engine. Additional ground tests were performed on the new engine between May and October 2014.
2015: another fuel change
Following a series of rocket engine tests, Virgin announced in October 2015 that they would be changing the rocket motor back to hydroxyl-terminated polybutadiene Hydroxyl-terminated polybutadiene (HTPB) is an oligomer of butadiene terminated at each end with a hydroxyl functional group. It reacts with isocyanates to form polyurethane polymers.
HTPB is a translucent liquid with a color similar to wax pap ...
(HTPB), with a similar formulation as they used earlier in the development program before switching to a nylon-based fuel grain. They will use HTPB to power the SpaceShipTwo when it resumes flight following the loss of the initial SS2 test vehicle in October 2014. Full qualification tests remain to be completed.
RocketMotorTwo
The second-generation RocketMotorTwo engine is a variant of the earlier SNC basic design, but is fueled by polyamide plastic fuel, while continuing to use the same nitrous oxide oxidizer. The second-generation engine is now made in-house by Virgin Galactic rather than by SNC. By December 2012, 15 full-scale tests had been successfully conducted,[RocketMotorTwo Hot-Fire Test Summaries](_blank)
Scaled.com Updated 9 August 2012 Retrieved 16 December 2012[ and additional ground tests continued into March 2013. In June 2012, the ]Federal Aviation Administration
The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic m ...
(FAA) issued a rocket testing permit to Scaled Composites, allowing it to begin SS2 test flights powered by RocketMotorTwo; the first such powered flight took place on 29 April 2013.[ The engine produces of thrust.
]
Test flights
Testing VSS ''Enterprise''
In September 2012, Virgin Galactic announced that the unpowered subsonic
Subsonic may refer to:
Motion through a medium
* Any speed lower than the speed of sound within a sound-propagating medium
* Subsonic aircraft, a flying machine that flies at air speeds lower than the speed of sound
* Subsonic ammunition, a type o ...
glide flight test program was essentially complete. In October 2012, Scaled Composites installed key components of the rocket engine, and SpaceShipTwo performed its first glide flight with the engine installed in December 2012.[
The spacecraft's first powered test flight took place on 29 April 2013. SpaceshipTwo reached supersonic speeds in this first powered flight.] On 5 September 2013, the second powered flight was made by SpaceShipTwo. The first powered test flight of 2014 — and third overall — occurred 10 January 2014. The spacecraft reached an altitude of and a speed of . The WhiteKnightTwo carrier aircraft released SpaceShipTwo (VSS ''Enterprise'') at an altitude of .
October 2014 crash
On 31 October 2014, SpaceShipTwo VSS ''Enterprise'' suffered an in-flight breakup during a powered flight test, resulting in a crash killing one pilot, Michael Alsbury, and injuring the other. It was coincidentally the first flight to use the new type of fuel, based on nylon plastic grains. The crash was caused by a premature deployment of the feathering mechanism, which is normally used to aid in a safe descent. SpaceShipTwo was still in powered ascent when the feathering mechanism deployed. Disintegration was observed two seconds later.[
, SpaceShipTwo had conducted 54 test flights.] The spacecraft had used its "feathered" wing configuration during ten of these test flights.
The National Transportation Safety Board
The National Transportation Safety Board (NTSB) is an independent U.S. government investigative agency responsible for civil transportation accident investigation. In this role, the NTSB investigates and reports on aviation accidents and inci ...
conducted an independent investigation into the accident. In July 2015, the NTSB released a report which cited inadequate design safeguards, poor pilot training, lack of rigorous federal oversight and a potentially anxious co-pilot as important factors in the 2014 crash.[ ] While the co-pilot was faulted for prematurely deploying the ship's feathering mechanism, the Federal Aviation Administration, Federal Aviation Administration Office of Commercial Space Transportation, and the ship's designers were also faulted for not creating a fail-safe system that could have guarded against such premature deployment.
VSS ''Unity''
In October 2015, it was reported that the second SpaceShipTwo would make its first flight in 2016.
VSS ''Unity'' was unveiled in February 2016.
A phase of testing called " Integrated Vehicle Ground Testing" began on VSS ''Unity'' in February 2016. Between 8 September and 30 November 2016, Virgin Galactic conducted a series of captive-carry flights of ''Unity,'' including planned glide flights (1 and 3 November 2016) for which the glide portion of the flight was cancelled because of wind speed. Glide flights of ''Unity'' began on 3 December 2016.
After several glide flights over the preceding months, in July 2017, Richard Branson suggested that the craft was to begin powered tests at three-week intervals. In September 2017, CEO George Whitesides suggested that engine testing was complete, and that only a "small number of glide flights" remained before VSS ''Unity'' would begin powered tests flights. In October 2017, Branson suggested that SpaceShipTwo could reach space within three months, and that he could travel to space aboard a SpaceShipTwo within six months. A seventh high speed glide test was completed in January 2018. On 13 December 2018, SpaceShipTwo VSS ''Unity'' reached its highest altitude of . This surpassed the U.S. Government
The federal government of the United States (U.S. federal government or U.S. government) is the national government of the United States, a federal republic located primarily in North America, composed of 50 states, a city within a fede ...
definition of space at but not the standard used elsewhere at . Despite the debate on where outer space begins, Mark Stucky would receive his astronaut wings, while Frederick W. Sturckow would not as he has already flown on the Space Shuttle
The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program na ...
four times.
Following a February 2019 spaceflight, VSS ''Unity'' began to undergo modifications in preparation for commercial service; this includes an upgrading the flight deck and installing a passenger cabin. It was later revealed in 2021 that VSS ''Unity'' had actually suffered a large crack in its structure during its 2019 spaceflight, requiring repair work to the vehicle. Following its return to service VSS ''Unity'' made a test flight that included Richard Branson as a passenger on July 11, 2021. During this flight, the vehicle deviated from its planned flight course triggering a Federal Aviation Administration
The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic m ...
investigation into the issue. While in ascent the vehicle triggered a red warning light which indicated it had deviated from its safe flight path. On 2 September 2021, it was publicly announced that further SpaceShipTwo flight tests would be grounded by FAA mandate until the investigation was completed. The FAA cleared SpaceShipTwo flights to resume later in September, after deciding to expand the restricted aerospace around the vehicle's flight range.
Costs
SpaceShipTwo's total development costs were estimated at around US$400 million in May 2011, a significant increase over the 2007 estimate of US$108 million.
Commercial operation
The duration of the flights will be approximately 2.5 hours, though only a few minutes of that will be in space. The price will initially be US$200,000. More than 65,000 would-be space tourists applied for the first batch of 100 tickets. By December 2007, Virgin Galactic had 200 paid-up customers on its books for the early flights, and 95% were passing the 6-8 g centrifuge tests. That number had increased to 575 by early 2013.[ In April 2013, Virgin Galactic announced that the price for a seat would increase 25% to $250,000 before the middle of May 2013,] and would remain at US$250,000 "until the first 1,000 people have traveled, so that it matches up with inflation since irgin Galacticstarted".
Following 50–100 test flights, the first paying customers were expected to fly aboard the craft in 2014.[ Refining the projected schedule in late 2009, Virgin Galactic declined to announce a firm timetable for commercial flights, but did reiterate that initial flights would take place from Spaceport America. Operational roll-out will be based on a "safety-driven schedule".] In addition to making suborbital passenger launches, Virgin Galactic will market SpaceShipTwo for suborbital space science
Space is the boundless Three-dimensional space, three-dimensional extent in which Physical body, objects and events have relative position (geometry), position and direction (geometry), direction. In classical physics, physical space is often ...
missions.[
]
NASA sRLV program
By March 2011, Virgin Galactic had submitted SpaceShipTwo as a reusable launch vehicle for carrying research payloads in response to NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research.
NASA was established in 1958, succeedi ...
's suborbital reusable launch vehicle (sRLV) solicitation, which is a part of the agency's Flight Opportunities Program. Virgin projected research flights might reach a peak altitude of . These flights will provide approximately four minutes of microgravity for research payloads. Payload mass and microgravity levels have not yet been specified.[ Since May 2021, NASA-supported technology and systems have been tested on SpaceShipTwo.][ ]
Future spacecraft
In August 2005, the president of Virgin Galactic stated that if the suborbital service with SpaceShipTwo is successful, the follow-up SpaceShipThree would be an orbital craft. In 2008, Virgin Galactic suggested that it may develop a high-speed passenger vehicle to offer transport through point-to-point suborbital spaceflight
A sub-orbital spaceflight is a spaceflight in which the spacecraft reaches outer space, but its trajectory intersects the atmosphere or surface of the gravitating body from which it was launched, so that it will not complete one orbit ...
.
Specifications
See also
References
External links
Official Virgin Galactic website
Official Scaled Composites website
Virgin Galactic
National Geographic Channel
National Geographic (formerly National Geographic Channel; abbreviated and trademarked as Nat Geo or Nat Geo TV) is an American pay television network and flagship channel owned by the National Geographic Global Networks unit of Disney General ...
documentary, 2012
Formation of The Spaceship Company
— SPACE.com (2005)
— SpaceDaily (2004)
Space or Bust: Feature article on space tourism
— Cosmos Magazine (2005)
— Space Law Probe (2006)
Images of SS2 mockups
— ZDNet (2007)
"VG Powered Flight Updated Drop BRoll"
Virgin Galactic via YouTube 29 April 2013 Shows all 16 seconds of the first-flight rocket firing from three views, and most of the sequence from a fourth view
{{Crewed spacecraft
Virgin Galactic
Scaled Composites
The Spaceship Company
Scaled Composites White Knight Two
Crewed spacecraft
Reusable launch systems
Rocket-powered aircraft
Experimental vehicles
Spaceplanes
Space tourism
Suborbital spaceflight
Space program fatalities
Vehicles introduced in 2013
American spacecraft