Spaceplane Companies

Virgin Galactic

Tustin, United States commercial

Virgin Galactic is a commercial spaceflight company founded by Richard Branson in 2004, specializing in suborbital tourism aboard its SpaceShipTwo winged spaceplane. The company launched from Spaceport America in New Mexico using the WhiteKnightTwo carrier aircraft. After years of development following the 2014 VSS Enterprise fatal accident, Virgin Galactic conducted Richard Branson's flight in July 2021 and began commercial service in 2023 with the Galactic 01 mission. However, the company suspended all SpaceShipTwo flight operations in July 2023 to redirect resources toward the next-generation Delta class vehicle, designed for higher flight rates and operational efficiency. As of 2026, Virgin Galactic is in a development hiatus — not actively flying, not accepting new bookings, and significantly reduced in headcount. The Delta class vehicle represents the company's planned path back to commercial operations, but timeline and financing remain uncertain. SPCE stock has declined sharply from its peak.

Sierra Space

Louisville, United States commercial

Sierra Space is a commercial space company developing the Dream Chaser spaceplane, Orbital Reef commercial space station, and related space technologies. Spun off from Sierra Nevada Corporation in 2021, Sierra Space is based in Louisville, Colorado, and aims to build commercial infrastructure in low Earth orbit to support NASA, commercial, and international customers. Sierra Space operates as a privately held company backed by strategic investors including General Atlantic, Coatue, and Moore Strategic Ventures. The company employs approximately 1,500 people and is led by CEO Tom Vice. Sierra Space positions itself as a leader in the commercialization of low Earth orbit. ## History and Milestones Sierra Nevada Corporation's Space Systems group developed the Dream Chaser vehicle beginning in 2004, based on NASA's HL-20 lifting body design. The spacecraft competed for NASA's Commercial Crew Program but was not selected. Sierra Nevada pivoted to cargo delivery, winning a Commercial Resupply Services-2 contract in 2016. Sierra Space was established as a separate company in 2021 to focus on commercial space opportunities beyond government contracts. The spinoff attracted significant private investment, valuing the company at over $4.5 billion. In 2021, Sierra Space partnered with Blue Origin to propose Orbital Reef, a commercial space station selected by NASA's Commercial LEO Destinations program. This partnership positions Sierra Space as a potential successor to the International Space Station. ## Products and Services Dream Chaser is a reusable lifting-body spaceplane designed to deliver cargo to the International Space Station and future destinations. The vehicle launches atop a ULA Vulcan Centaur or Atlas V rocket and returns to Earth with a runway landing, enabling rapid payload recovery. Dream Chaser carries both pressurized and unpressurized cargo. The LIFE (Large Integrated Flexible Environment) habitat is Sierra Space's expandable space station module technology. LIFE modules launch compactly and inflate to provide large pressurized volume. This technology is central to Orbital Reef and could support lunar surface habitats. Sierra Space is developing Shooting Star, a cargo module that accompanies Dream Chaser, providing additional volume for supplies and waste disposal. The company also works on space station systems, life support, and related technologies. ## Technology and Capabilities Dream Chaser's lifting body design provides cross-range capability during reentry, enabling landing at multiple locations. The spacecraft is designed for gentle returns (1.5 g maximum), suitable for sensitive cargo including biological experiments. Dream Chaser can land on commercial runways at non-federal spaceports. LIFE habitat technology uses advanced materials to create expandable structures that provide more volume per launch than traditional rigid modules. Sierra Space has conducted full-scale burst tests demonstrating the technology's structural integrity and safety margins. The company develops life support, thermal control, and power systems for space habitats. Sierra Space also works on in-space manufacturing technologies, including plans for industrial facilities aboard Orbital Reef. ## Business and Financial Overview Sierra Space raised approximately $1.4 billion in private funding, including a 2021 Series A at a $4.5 billion valuation. The company generates revenue from NASA contracts, including the Commercial Resupply Services agreement for Dream Chaser cargo flights. Major contracts include NASA CRS-2 (at least six Dream Chaser cargo missions), Commercial LEO Destinations funding for Orbital Reef, and various technology development awards. The company seeks additional commercial and international customers for Dream Chaser and space station services. Sierra Space competes for astronaut and cargo transportation services while developing commercial space station offerings. The company's path to profitability depends on successful Dream Chaser operations and Orbital Reef development. ## Recent Developments In 2024, Sierra Space prepared for the first Dream Chaser mission, completing spacecraft integration and testing. The inaugural flight to the International Space Station was targeted for launch on ULA's Vulcan Centaur rocket. The company advanced Orbital Reef development, conducting system design reviews and component testing. Sierra Space also expanded its LIFE habitat program, completing additional structural tests and advancing manufacturing capabilities. Sierra Space strengthened international partnerships and explored additional commercial applications for its technologies. The company also invested in workforce development and facilities expansion to support upcoming operations. ## Market Position Sierra Space positions itself as a commercial space infrastructure provider, distinct from launch companies like SpaceX or satellite operators. The Dream Chaser and Orbital Reef represent comprehensive solutions for low Earth orbit commercialization. Key competitors include SpaceX (for cargo services and potentially stations), Axiom Space (for commercial space stations), and other companies developing LEO infrastructure. Sierra Space's reusable spaceplane technology offers unique capabilities for cargo return. Competitive advantages include the Dream Chaser's gentle return capability, expandable habitat technology, and diverse technology portfolio. Strategic partnerships with Blue Origin for Orbital Reef and ULA for launch services strengthen the company's position.

Dawn Aerospace

Delft, New Zealand commercial

Dawn Aerospace, founded in 2018 and headquartered in Christchurch, New Zealand (with an R&D presence in the Netherlands), is developing a reusable suborbital spaceplane and green propulsion systems for satellites — pursuing a long-term vision of aircraft-like daily access to space using horizontally-launched, rocket-propelled vehicles that can fly multiple missions per day from conventional airstrips without large launch infrastructure. Dawn's Mk-II Aurora is an autonomous (uncrewed) suborbital spaceplane approximately 4 meters long, launched horizontally from an aircraft runway, powered by a nitrous oxide/propylene propulsion system. The Mk-II targets 100+ km altitude (Kármán line crossing) for microgravity research payloads, atmospheric science instruments, and space boundary experiments, with recovery via autonomous landing for rapid reuse. Flight testing of the Mk-II began in New Zealand in 2023 with approach-and-landing trials, working toward full rocket-powered ascent and hypersonic re-entry envelope expansion. The longer-term Mk-III concept targets orbital capability with a recoverable first stage and expendable upper stage. Dawn's satellite propulsion division manufactures green monopropellant thruster systems using hydroxylammonium nitrate (HAN)-based propellants — non-toxic, non-carcinogenic propellants with density impulse superior to hydrazine for small satellite applications. These thrusters are sold to satellite bus manufacturers and constellation operators as drop-in replacements for hydrazine monopropellant systems, avoiding the extensive ground safety equipment and handling procedures hydrazine requires. Dawn's New Zealand base leverages RocketLab's regulatory precedent for commercial launches from NZ airspace, the country's Southern Hemisphere orbital trajectory advantage, and a growing local aerospace manufacturing ecosystem. The company competes with Hermeus, Reaction Engines, and Virgin Galactic in reusable spaceplane development, and with Bradford ECAPS, Aerojet Rocketdyne, and Benchmark Space Systems in green smallsat propulsion.

The Spaceship Company (TSC) is a spacecraft and aircraft manufacturer founded in mid-2005 by Burt Rutan and Richard Branson to build and own the vehicles flown by Virgin Galactic, separating manufacturing from Virgin Galactic's flight-operations business. Based at the Mojave Air and Space Port in Mojave, California, TSC became a wholly owned Virgin Galactic subsidiary in 2012 after Virgin bought out Scaled Composites' stake, and it subsequently took over production and flight testing of SpaceShipTwo-class suborbital spaceplanes and their WhiteKnightTwo carrier aircraft from Scaled Composites, which had built the original SpaceShipTwo, VSS Enterprise (lost in a fatal 2014 test-flight accident). TSC built and tested VSS Unity, VSS Imagine and related vehicles, and the carrier aircraft VMS Eve, supporting Virgin Galactic's commercial suborbital tourism flights, which began in 2023 and carried paying customers and researchers from Spaceport America, New Mexico. The company has also pursued supersonic aircraft work, partnering with Boom Technology from 2016 on the XB-1 demonstrator aircraft. In 2024 Virgin Galactic paused active flight operations of the Unity-class spaceplane and shifted TSC's manufacturing effort toward larger, more production-friendly Delta-class vehicles intended for commercial service later in the decade. The Spaceship Company remains active as Virgin Galactic's in-house manufacturing arm, based in Mojave, California, with additional facilities reported in Tustin, California.

PD AeroSpace

Hekinan, Japan commercial

PD AeroSpace (PD stands for Pulse Detonation) is a Japanese aerospace company developing suborbital spaceplanes using hybrid jet-rocket propulsion with pulse detonation technology. The company aims to carry 2 pilots and 6 passengers on suborbital flights. PD AeroSpace plans to operate from Shimojishima spaceport in Okinawa and envisions point-to-point transport connecting Tokyo to New York in 60 minutes.

Radian Aerospace

Seattle, United States commercial

Radian Aerospace is developing Radian One, a horizontal takeoff/landing single-stage-to-orbit spaceplane—the 'holy grail' of space transportation. The vehicle will launch from a 3+ kilometer rocket-powered rail sled, reaching orbit with rocket engines before runway landing, capable of flying again in 48 hours. Radian One will carry five people and 2,270 kg cargo to LEO. In April 2025, the company unveiled the R3V (Radian Reusable Reentry Vehicle) platform for near-term revenue generation. Radian partnered with General Atomics in March 2025 for advanced avionics. The company's ambitious SSTO design could revolutionize space access if successful.

Space Transportation

Beijing, China commercial

Space Transportation (凌空天行, Lingkong Tianxing) is a Beijing-based Chinese commercial aerospace company founded in 2018 developing a family of reusable winged rocket-powered vehicles for suborbital cargo transport, hypersonic point-to-point passenger transport, and eventual low Earth orbit access — pursuing an alternative architecture to vertical-launch rockets by leveraging the aerodynamic efficiency and runway landing capability of spaceplane designs. The company's Tianxing vehicle family is designed for horizontal runway landing, recovering the vehicle for rapid reflight similarly to an aircraft. The near-term commercial target is hypersonic point-to-point (P2P) cargo and passenger transport: a suborbital trajectory that reaches Mach 5-20 enables cargo delivery from China to Europe in 1-2 hours, or passenger transport in 3-4 hours compared to 10-12 hours by conventional aircraft — a market Space Transportation is targeting alongside competitors Sierra Space's Dream Chaser and Hermeus in the West, and Rocket Cargo and DARPA's DRACO for military applications. Space Transportation has conducted multiple hot-fire tests of its rocket engines and vehicle flights, with significant Chinese venture capital backing from investors including Shunwei Capital and other top-tier Chinese funds. China's civil-military fusion (CMF) industrial policy means Space Transportation's hypersonic spaceplane technology has dual defense significance for the People's Liberation Army Rocket Force alongside its commercial transport applications. The company competes within China's commercial spaceplane sector alongside Lingkong Hypersonics and the Beijing-based teams developing winged reusable launch vehicles, and internationally with Sierra Space, Rocket Lab's future reusable plans, and Hermeus.

Scaled Composites

Mojave, United States commercial

Scaled Composites is an American aerospace prototyping and experimental aircraft company founded in 1982 by aerospace designer Burt Rutan and based at the Mojave Air and Space Port in Mojave, California. The company built SpaceShipOne, the first privately developed crewed vehicle to reach space, which won the $10 million Ansari X Prize in 2004 after two flights above 100 km; that programme, funded by Microsoft co-founder Paul Allen, established Scaled Composites as the leading builder of experimental suborbital spaceplanes. Scaled subsequently designed and built the original SpaceShipTwo and its WhiteKnightTwo carrier aircraft for Virgin Galactic, though manufacture and testing of later SpaceShipTwo-class vehicles was transferred to Virgin's own subsidiary, The Spaceship Company. Other notable Scaled Composites projects include the Proteus high-altitude research aircraft, the Virgin Atlantic GlobalFlyer (first solo non-stop flight around the world), the X-47A Pegasus unmanned combat air vehicle demonstrator, and structural work on the Stratolaunch carrier aircraft, the largest aircraft by wingspan ever flown. Northrop Grumman acquired full ownership of Scaled Composites on 24 August 2007, and the company now operates as a wholly owned Northrop Grumman subsidiary specialising in composite-structure design, prototype fabrication and flight test services for aerospace and defense customers, rather than as an independent spacecraft developer. Scaled Composites remains active, employing several hundred staff at its Mojave facility under president Greg Morris.

Paragon Space Development

Tucson, United States commercial

Paragon Space Development Corporation is a Tucson, Arizona-based engineering company founded in 1993 by Jane Poynter and Taber MacCallum — both Biosphere 2 crew members — specializing in environmental control and life support systems (ECLSS) and thermal control systems (TCS) for human spaceflight applications ranging from near-Earth orbital habitats to deep space and lunar surface missions. Paragon's core engineering competency is the design and manufacture of closed-loop life support systems that maintain human-habitable atmospheric conditions in sealed pressurized environments: oxygen generation (via electrolysis or chemical oxygen generators), carbon dioxide removal (using lithium hydroxide canisters or regenerable 4-bed molecular sieves), humidity and temperature control, trace contaminant monitoring, and cabin pressure management. The company also develops water recovery systems that process crew condensate, urine, and wastewater through filtration and distillation into potable water — a critical system for long-duration missions where water resupply is impractical. Thermal control systems designed by Paragon manage heat rejection from spacecraft internal equipment through heat exchangers, cold plates, fluid loops (using ammonia or water as working fluid), radiators, and multi-layer insulation (MLI) blankets. For lunar surface operations, Paragon has developed regolith-facing thermal management concepts that must handle extreme temperature swings from -173°C (lunar night) to +127°C (lunar day). Paragon has contributed ECLSS hardware and engineering services to multiple programs: Bigelow Aerospace's BEAM (Bigelow Expandable Activity Module) on the ISS, NASA Commercial Crew program, Sierra Space Dream Chaser spaceplane life support design, and early-stage lunar lander habitat concepts under NASA's Artemis Commercial Lunar Payload Services (CLPS) framework. The company has also developed prototype spacesuit life support systems and portable life support system (PLSS) components. Competitors in the ECLSS space include Hamilton Sundstrand (now Collins Aerospace, which built the ISS ECLSS), Honeywell Aerospace, and NASA's own Johnson Space Center engineering teams. Paragon differentiates through its willingness to support smaller commercial customers and novel habitat architectures where legacy ECLSS vendors lack incentive to engage.