Space & Satellites
ESA and Avio Sign 40 Million Euro Contract for Reusable Upper Stage
ESA and Avio launch a 24-month €40M program to develop a reusable upper stage, boosting Europe’s space launch competitiveness and sustainability.
Europe’s Strategic Push for Reusable Space Technology: ESA and Avio’s €40 Million Upper Stage Demonstrator Contract
The European Space Agency (ESA) and Italian aerospace company Avio have embarked on a transformative journey toward reusable space technology with their €40 million contract signed on September 29, 2025. This marks a pivotal moment in Europe’s quest for competitive space transportation capabilities. Announced at the International Astronautical Congress in Sydney, the agreement represents not merely a technological development but a strategic recalibration of European space policy in response to the rapidly evolving global launch market, where reusable systems like SpaceX’s Falcon 9 and the emerging Starship program dominate.
The 24-month development initiative aims to demonstrate an in-flight reusable upper stage capable of returning to Earth and being reflown, addressing one of the most challenging aspects of space transportation reusability. This move positions Europe to compete in an increasingly cost-conscious and environmentally aware space economy. The contract builds upon decades of European space heritage while incorporating lessons learned from successful reusability programs worldwide, drawing visual and conceptual parallels to SpaceX’s Starship design, albeit on a scale tailored to European industrial capabilities and market needs.
Historical Context and the Evolution of European Space Transportation
The development of reusable space transportation technology marks a fundamental shift in the global space industry, moving away from the traditional expendable rocket paradigm that has dominated space exploration since the 1950s. Europe’s journey toward reusability is characterized by technical excellence in scientific missions and institutional challenges in adapting to commercial market pressures. ESA’s historical strengths have primarily resided in complex scientific missions, such as the Rosetta comet exploration and the Gaia space observatory, demonstrating exceptional engineering and mission planning capabilities. However, the continent has struggled with launch autonomy and cost competitiveness in an increasingly commercial space market[1].
The European launcher landscape has been built around the Ariane and Vega rocket families, with Italy leading the Vega program through a 65% funding contribution. The Vega rocket, which took its name from the brightest star in the constellation Lyra, served as Europe’s primary small-lift launch vehicle from its maiden flight in February 2012 until its final mission in September 2024. This solid-fueled launcher demonstrated Europe’s ability to serve niche markets, particularly for scientific and Earth observation missions, though it struggled to compete commercially against emerging low-cost alternatives[5].
The institutional framework governing European space transportation has historically relied on government contracts, creating what industry analysts describe as institutional inertia that delayed Europe’s adoption of reusable technologies. This approach contrasted with the entrepreneurial model pioneered by companies like SpaceX, which leveraged commercial markets and venture capital to accelerate innovation and reduce costs through reusability. The European sector’s emphasis on reliability and mission success created a conservative engineering culture initially skeptical of reusable rocket technology.
However, the landscape began shifting dramatically after SpaceX’s successful demonstration of first-stage reusability with the Falcon 9 rocket in 2017. The economic implications became undeniable as studies showed potential cost reductions of 50-70% after multiple flights of reusable systems. The mounting pressure from mega-constellations and increasing demand for small satellite launches forced European agencies and industry to reconsider their approach to launcher development and operational philosophy.
The 2023 ESA Ministerial Council marked a turning point by allocating dedicated funds for reusability research and development, setting the stage for contracts like the current ESA-Avio agreement. This decision represented a fundamental acknowledgment that Europe needed to embrace reusable technology to maintain its strategic independence in space access while reducing operational costs and increasing mission frequency to support an emerging orbital economy.
The ESA-Avio Contract: Technical Specifications and Development Timeline
The €40 million contract between ESA and Avio establishes a comprehensive 24-month development program focused on creating a reusable upper stage demonstration mission[1][2][4]. The agreement was formally signed during the 2025 International Astronautical Congress in Sydney, where global industry leaders gathered to discuss the future of space exploration and commercialization. The timing of this announcement at IAC 2025 is significant, as it echoes the 2016 IAC in Guadalajara, where SpaceX first unveiled concepts that would later become the Starship program[9].
The development program encompasses both flight and ground segment preliminary design activities, with Avio responsible for system requirements definition and technological solutions identification[7]. According to ESA’s Chief Technical Advisor for Space Transportation Giorgio Tumino, the initiative capitalizes on progress made in advanced liquid propulsion, reentry, recoverability, and reusability technologies, complementing ongoing efforts to de-risk demonstrations of reusable lower stages. The project supports different possible scenarios, including evolutions of the Vega family of rockets as well as other newly defined fully reusable launch systems in Europe.
The technical approach outlined in the contract builds upon Avio’s expertise in methalox (methane and liquid oxygen) propulsion systems, specifically the MR10 rocket engine under development for the Vega E upper stage[7][11]. The MR10 engine, previously designated as M10, represents a significant technological advancement for European space propulsion. The proposed reusable upper stage design features four aerodynamic control flaps and proportions suggesting propulsive landing capabilities, drawing comparisons to SpaceX’s Starship[9]. The vehicle is designed to be launched atop a P120C solid rocket booster, currently serving as the first stage of Vega C and as strap-on boosters for Ariane 6.
At approximately 36.5 meters in total height, the proposed demonstrator is roughly half the height of SpaceX’s Super Heavy booster, making it comparable in scale to emerging concepts like Stoke Space’s Nova rocket. Notably, the European concept does not currently include a reusable first stage, as the P120C solid rocket booster is not equipped for recovery operations. This reflects both technical pragmatism and the incremental approach characteristic of European space development.
“The initiative capitalizes on progress made in advanced liquid propulsion, reentry, recoverability, and reusability technologies, complementing ongoing efforts to de-risk demonstrations of reusable lower stages.” — Giorgio Tumino, ESA
Technical Innovation and Engineering Challenges
Developing a reusable upper stage presents greater technical challenges than first-stage reusability, primarily due to the extreme velocities and thermal environments encountered during orbital operations and atmospheric reentry. Upper stages must endure hypersonic reentry speeds, manage intense thermal loads, and execute precise propulsive landings or parachute-assisted recoveries[1]. These conditions require advanced materials, thermal protection systems, and guidance algorithms.
Europe’s approach builds upon substantial heritage from the Space Rider program, an uncrewed reusable spaceplane developed by a consortium including Avio and Thales Alenia Space[6][7]. The Space Rider vehicle, scheduled for its qualification flight in 2027, provides valuable experience in atmospheric reentry technologies and thermal protection systems. However, while Space Rider demonstrates important reentry capabilities, it is a specialized cargo return vehicle rather than a full upper stage system capable of orbital payload delivery and return.
The ESA-Avio contract aims to integrate launch, orbital deployment, and return capabilities into a single reusable module, requiring sophisticated systems integration and operational complexity management. The propulsive landing approach eliminates the need for traditional parachute recovery systems while providing greater landing precision. Avio’s technical approach draws on its experience with cryogenic propulsion systems, particularly methalox engines, which offer cleaner combustion and improved storability compared to hydrogen. The MR10 engine development program has achieved significant milestones, including successful test firings and the initiation of flight hardware manufacturing using advanced additive manufacturing techniques[11].
The development program also incorporates lessons from ongoing European reusability initiatives, including the Themis reusable first-stage prototype and the Prometheus reusable rocket engine program[9][12]. The Themis demonstrator, which recently completed integration at Sweden’s Esrange Space Center, provides experience in reusable rocket operations and ground systems integration. These parallel efforts create synergies that accelerate European progress toward comprehensive reusable launch systems.
“Methane fuel offers several advantages for reusable applications, including cleaner combustion characteristics that reduce engine fouling between flights, improved storability compared to hydrogen, and the potential for in-situ resource utilization.” — Industry Analysis
European Space Transportation Strategy and Policy Framework
The ESA-Avio contract operates within a broader strategic framework designed to position Europe as a competitive force in global space transportation markets while maintaining strategic autonomy in space access. ESA’s Vision 2030+ initiative, led by Giorgio Tumino, calls for a comprehensive reassessment of European space transportation capabilities and requirements for the coming decade and beyond[15]. This strategy emphasizes the need for innovative approaches that can position Europe as a global competitor.
The policy framework supporting reusable technology development has evolved through successive ESA ministerial councils, with the 2023 council providing crucial funding allocations for reusability research and development programs[1]. These decisions reflect growing recognition among European policymakers that reusable technology is essential for maintaining competitive launch services and supporting the expanding orbital economy.
The Future Launchers Preparatory Programme (FLPP), established in 2004, provides the institutional framework for advancing reusable technology development across multiple European initiatives[12]. FLPP develops and matures promising technologies for future applications, aiming to raise technology readiness levels for integration into development programmes with reduced cost and risk. Within FLPP, programs like THRUST!, FIRST!, and BEST! address propulsion, technology disruptors, and reusable boosters, respectively, while Themis and Prometheus focus on reusable stages and engines.
The new strategic approach also recognizes the need for European space agencies to evolve from traditional project leadership toward project enablement, working more closely with private sector actors and their commercial objectives. This transformation may involve agencies acting as “anchor customers” to ensure coordinated European procurement of end-services and provide market stability for emerging commercial providers[15].
Global Competition and Market Context
The global space launch market has undergone dramatic transformation since 2010, fundamentally altering competitive dynamics and pricing structures. SpaceX’s entry into the commercial launch market with Falcon 9 created unprecedented pricing pressure on established launch providers, including Europe’s Arianespace and other traditional operators[10]. SpaceX’s published price of $56.5 million per launch to low Earth orbit in 2013 already represented the cheapest option in the industry, with reusable Falcon 9 systems projected to decrease prices even further.
Pricing impact became particularly evident in the geostationary transfer orbit market, where Falcon 9 GTO mission pricing in 2014 was approximately $15 million less than comparable launches on China’s Long March 3B[10]. European satellite operators formally requested that ESA find immediate ways to reduce Ariane 5 launch costs and make the next-generation Ariane 6 more attractive for smaller telecommunications satellites.
Current launch vehicle payload costs per kilogram demonstrate the stark competitive reality facing European providers, with Falcon 9 achieving approximately $2,720 per kilogram compared to Ariane 5G’s $9,167 per kilogram[10]. The Falcon Heavy further reduces costs, while Europe’s Vega rocket, despite its niche market position, represents significantly higher costs for small payload missions. These pricing differentials have forced fundamental reassessment of European launch strategies and accelerated the development of cost-reduction initiatives, including reusable technology programs.
The competitive landscape extends beyond pricing to include launch frequency, payload integration flexibility, and customer service. SpaceX’s ability to maintain high launch cadences while continuously improving reliability has established new industry benchmarks. Emerging competitors from China, India, Japan, and numerous private companies worldwide continue developing reusable technologies, threatening to further commoditize launch services.
“Reusable technology adoption represents a fundamental industry transition rather than a temporary competitive advantage for early adopters.” — Space Industry Analysis
Economic and Strategic Implications
The economic implications of the ESA-Avio reusable upper stage development contract extend far beyond the immediate €40 million investment, representing a strategic commitment to maintaining European competitiveness in space transportation markets projected to exceed $400 billion annually by 2030. Studies consistently demonstrate that reusable rocket systems can achieve significant cost reductions after multiple flights, creating potential for dramatic improvements in European launch service pricing competitiveness[1].
The industrial implications encompass direct employment and technology development within Avio and partner companies, as well as broader supply chain effects throughout European aerospace manufacturing. The development program requires advanced materials, precision manufacturing, software development, and systems integration expertise that strengthens European industrial capabilities across multiple sectors. The emphasis on additive manufacturing represents a significant technological advancement with applications beyond space propulsion systems[11].
European space transportation independence carries significant strategic value, particularly given increasing geopolitical tensions and recognition of space assets’ critical importance to national security and economic competitiveness. The ability to launch European satellites and missions using European rockets provides strategic autonomy, a crucial capability in an increasingly contested space environment.
The program also positions European industry to participate in emerging markets, including orbital manufacturing, space tourism, lunar exploration, and Mars missions that require cost-effective, high-frequency launch capabilities. These markets represent potentially transformative economic opportunities that could justify current reusable technology investments through future revenue generation and industrial capability development.
Future Roadmap and Industry Impact
The ESA-Avio reusable upper stage demonstration represents the initial phase of a comprehensive European roadmap toward fully reusable launch systems. The 24-month development timeline concludes with preliminary design completion and technology demonstration, but broader implications extend to multiple follow-on programs, including evolutions of the Vega rocket family and entirely new fully reusable European launch systems[7].
Avio’s parallel development of the IFD1 single-stage reusable rocket demonstrator, scheduled to begin testing in Q3 2025, provides complementary technology development that supports broader reusability objectives[14]. The longer-term roadmap encompasses the Vega Next rocket, planned for introduction beyond 2032, incorporating lessons learned from current reusability initiatives and powered by advanced propulsion systems including the larger M60 methalox engine.
European reusability initiatives extend beyond Avio’s programs to encompass ArianeGroup’s SUSIE (Smart Upper Stage for Innovative Exploration) spacecraft and the Themis reusable first-stage demonstrator[3][13]. The Themis program has achieved milestones with integration activities at Sweden’s Esrange Space Center and preparation for initial hop testing. These coordinated initiatives create a comprehensive technology development ecosystem addressing different aspects of reusable space transportation while building toward integrated operational capabilities.
Industry impact extends beyond European boundaries, as successful demonstration of reusable upper stage technology could influence global launch market dynamics and accelerate broader adoption of similar systems worldwide. Environmental considerations increasingly influence space transportation decisions, with reusable systems providing inherent sustainability benefits through reduced manufacturing requirements and decreased space debris generation.
Conclusion
The ESA-Avio €40 million contract for reusable upper stage development represents a watershed moment in European space transportation strategy, marking the continent’s decisive entry into the global competition for cost-effective, sustainable launch capabilities. This initiative transcends technological development to encompass strategic repositioning of European space capabilities in response to fundamental market transformations driven by reusable rocket technology.
The systematic approach to reusable technology development builds upon European engineering strengths while addressing competitive pressures that threaten continued relevance in space transportation markets. Success in this endeavor could establish the foundation for European leadership in next-generation space transportation capabilities, supporting broader objectives in exploration, scientific research, and emerging commercial applications that will define the space economy’s future trajectory.
FAQ
What is the main goal of the ESA-Avio contract?
The contract aims to develop and demonstrate a reusable upper stage for space launch vehicles, enabling Europe to compete in the global market for cost-effective and sustainable space transportation.
How long is the development timeline for the reusable upper stage?
The program is scheduled for a 24-month development period, culminating in a demonstration mission and preliminary design completion.
Why is reusability important for European space transportation?
Reusability can significantly reduce launch costs, increase mission frequency, and enhance sustainability, making European launch services more competitive in the global market.
Which other European initiatives are related to reusability?
Related programs include the Space Rider reusable spaceplane, ArianeGroup’s SUSIE spacecraft, the Themis reusable first-stage demonstrator, and ongoing methalox propulsion engine development.
What are some technical challenges of upper stage reusability?
Upper stages face extreme reentry velocities, intense thermal loads, and require advanced guidance and landing technologies to survive and be reused.
Sources
Photo Credit: ESA
Space & Satellites
Space Nuclear Power Faces Logistical and Economic Barriers, DRACO Canceled
Experts say space nuclear power challenges are logistical and economic, not technical. DRACO canceled; focus shifts to nuclear reactors in space and on the Moon.
This article summarizes reporting by Aerospace America.
For decades, the aerospace industry has recognized the immense potential of space nuclear power. Despite possessing the foundational technical knowledge since the 1960s, modern spacecraft continue to rely predominantly on chemical propulsion and solar arrays. A recent workshop at the May 2026 AIAA ASCEND event in Washington, D.C., sought to unpack this enduring paradox.
According to reporting by Aerospace America, a panel of aerospace and policy experts concluded that the primary barriers to deploying nuclear reactors in space are no longer technical. Instead, the industry is grappling with logistical, economic, and systemic hurdles that have repeatedly stalled progress.
The recent cancellation of the highly publicized Demonstration Rocket for Agile Cislunar Operations (DRACO) program in mid-2025 serves as a stark, real-world validation of these expert assessments, demonstrating how shifting economic landscapes can ground even the most ambitious nuclear initiatives.
The Illusion of Technical Barriers
During the ASCEND workshop, hosted by Brian Weeden of The Aerospace Corporation, panelists emphasized the extensive capital and time already invested in space nuclear research. Bhavya Lal, a professor at the RAND School of Public Policy, highlighted that the United States has spent 60 years and over $20 billion proving that the technology itself is viable.
“The technology has never been the bottleneck. What has failed each time is the system around the reactor,” Lal stated, according to the workshop coverage.
Lal further explained that these systemic failures include shifting mission scopes, a lack of political continuity, and unstable leadership architectures that prevent long-term projects from reaching the launch pad.
Stagnation Since the Space Race
The historical context of space nuclear power underscores the panel’s frustrations. During the Cold War, the U.S. heavily researched and successfully ground-tested nuclear thermal rockets through initiatives like the NERVA program. However, as reported by Aerospace America, these programs were ultimately scrapped due to changing political administrations and budget cuts following the Apollo era.
Tabitha Dodson, a program manager at the DARPA Defense Sciences Office, noted the resulting stagnation in the field during her panel remarks.
“The United States hasn’t really evolved our nuclear space technology since the fifties or sixties,” Dodson remarked at the event.
Dodson added that current research priorities have had to pivot toward radioisotope power systems and direct-energy power conversion systems to maintain momentum in a risk-averse funding environment.
Economic Realities and the DRACO Cancellation
The intersection of aerospace engineering and economic viability was brought into sharp focus with the recent fate of the DRACO program. Initiated in 2020 as a joint effort between DARPA, NASA, Lockheed Martin, and BWX Technologies, DRACO aimed to test a nuclear thermal rocket in orbit by 2027. Nuclear thermal propulsion was projected to be two to three times more efficient than chemical propulsion, potentially halving the travel time to Mars.
The Impact of Commercial Launch Costs
In June 2025, DARPA officially canceled the DRACO program. According to public statements from DARPA deputy director Rob McHenry, the decision was driven entirely by economics rather than technical failure.
The rapid decrease in commercial launch costs, largely propelled by the heavy-lift capabilities of companies like SpaceX, fundamentally altered the financial equation. The massive research and development costs required to perfect nuclear thermal propulsion could no longer be justified by a positive return on investment when chemical launches had become so inexpensive.
Current Mandates and the Path Forward
Despite the setbacks in nuclear propulsion, the push for nuclear power generation in space remains robust. Current executive mandates have established ambitious timelines, aiming for a functional nuclear reactor in space by 2028 and a working reactor on the lunar surface by 2030. These systems are considered critical for supporting long-term lunar habitats and deep-space exploration missions.
Balancing Ambition and Safety
Aaron Miles, Coordinator for Strategic Capabilities at the White House Office of Science and Technology Policy, discussed these targets at the ASCEND workshop. He emphasized the administration’s focus on setting goals that push the industry forward without ignoring logistical realities.
“Lunar surface reactor development efforts and in-space reactor efforts can benefit each other,” Miles noted regarding the dual mandates.
To meet these goals while navigating strict regulatory and safety hurdles, modern programs are utilizing High-Assay Low-Enriched Uranium (HALEU). Furthermore, contemporary reactor designs ensure that fission is only initiated once the system is safely in orbit, mitigating the historical public fears and international treaty complications associated with launching nuclear material.
AirPro News analysis
We observe that the pivot from nuclear propulsion (like the canceled DRACO program) to stationary nuclear surface power reflects a pragmatic maturation of the aerospace sector. While reusable chemical rockets have decisively won the current launch economics battle, sustained deep-space habitats and lunar bases will undeniably require the continuous, high-density energy that only nuclear reactors can provide. The looming 2028 and 2030 mandates will serve as a critical test of whether the U.S. government and its commercial partners can finally overcome the systemic inertia and political discontinuity described by the ASCEND panelists.
Frequently Asked Questions
What was the DRACO program?
The Demonstration Rocket for Agile Cislunar Operations (DRACO) was a joint U.S. government and industry program initiated in 2020 to develop and test a nuclear thermal rocket by 2027. It was canceled in June 2025 due to shifting economic priorities and the falling cost of commercial chemical rocket launches.
Why is nuclear power needed in space?
While solar panels and chemical batteries are sufficient for operations near Earth, deep-space exploration and permanent lunar or Martian habitats require reliable, high-density power sources that can operate continuously without sunlight or frequent resupply.
What is HALEU?
High-Assay Low-Enriched Uranium (HALEU) is a type of nuclear fuel that provides a balance between high energy output and safety, making it a preferred choice for modern space reactor designs to comply with international regulations and safety standards.
Sources
Photo Credit: Aerospace America
Space & Satellites
SpaceX Secures $4.16B Contract for Space-Based Airborne Targeting
SpaceX awarded $4.16B by U.S. Space Force to develop SB-AMTI satellite constellation for global airborne threat detection by 2028.
This article summarizes reporting by DefenseScoop.
The U.S. Space Force has awarded SpaceX a $4.16 billion Other Transaction Authority (OTA) agreement to accelerate the development of the Space-Based Airborne Moving Target Indicator (SB-AMTI) program. According to reporting by DefenseScoop, the May 29, 2026, award aims to deploy a constellation of satellites capable of continuously detecting, tracking, and targeting airborne threats, including aircraft, drones, and cruise missiles, globally from space.
This multi-billion dollar contract highlights a strategic shift by the Pentagon to move critical surveillance capabilities from vulnerable airborne platforms to a more resilient space-based architecture. The Space Force expects to field an initial constellation by 2028, providing the Joint Force with an early operational capability.
SpaceX’s selection is part of a broader competitive procurement strategy. According to the source material, the aerospace company is one of nine vendors selected in April 2026 to compete for the SB-AMTI program. The Space Force anticipates issuing multiple awards to other vendors in the coming year to maintain a diverse industrial base.
The Shift from Air to Space
Retiring Legacy Airborne Systems
Historically, the U.S. military has relied on airborne warning and control system (AWACS) aircraft, such as the aging E-3 Sentry and the retired E-8 JSTARS, to execute moving target indicator missions. However, DefenseScoop reports that as adversaries develop increasingly sophisticated anti-access/area-denial (A2/AD) systems, these large, slow-moving aircraft have become highly vulnerable in contested airspace.
To address these operational blind spots, the Space Force is developing SB-AMTI to complement traditional airborne sensing. While the Air Force is currently procuring the E-7 Wedgetail to replace the E-3 Sentry, following congressional intervention to save the E-7 program from budget cuts, the Pentagon’s long-term goal is to transition the bulk of AMTI tasks into the space domain for enhanced survivability.
“To compliment traditional airborne sensing, the requirement for a layered, highly resilient tracking architecture is evident.”
Contract Details and Strategic Context
Funding and the “Golden Dome” Framework
The $4.16 billion OTA agreement tasks SpaceX with building an interconnected “system-of-systems” that combines space-based sensors, secure communication links, and ground processing to track moving airborne targets in real-time. To support this architecture, the Space Force has requested $7 billion to begin the formal procurement of SB-AMTI in fiscal year 2027, though DefenseScoop notes these funds are contingent upon Congress passing a reconciliation bill.
The SB-AMTI program is also a critical component of President Donald Trump’s proposed “Golden Dome” missile defense initiative. This framework aims to create a multi-layered defense system spanning ground, air, and space to detect and intercept airborne threats. The military is fast-tracking the SB-AMTI program to ensure the defensive system can meet its 2028 operational target.
“By focusing these capabilities to the space domain, we are providing the Joint Force with sustained battlespace awareness of contested airspace.”
SpaceX’s Growing Defense Portfolio
A Week of Multi-Billion Dollar Awards
This latest contract cements SpaceX’s position as a dominant player in U.S. national security. According to the provided research, the SB-AMTI award arrives just days after the Space Force granted SpaceX a separate $2.29 billion contracts on May 26, 2026, for the Space Data Network Backbone program, which will provide satellite communications for future missile interceptors.
In a single week, SpaceX secured nearly $6.45 billion in defense contracts. This surge in government backing coincides with industry reports indicating that SpaceX is preparing for an initial public offering (IPO) that could value the company at over $1.5 trillion.
Future Milestones and Parallel Programs
Looking Toward 2035
The Space Force has outlined an aggressive timeline for its space-based surveillance initiatives. Following the projected 2028 deployment of the initial SB-AMTI satellite constellation, the military anticipates operating second- and third-generation systems by 2035.
In parallel, the Space Force is developing the Space-Based Ground Moving Target Indicator (SB-GMTI) program to track ground-based targets. DefenseScoop reports that this complementary system is currently in the research-and-development phase.
“We will not leverage any one single provider; instead, we are partnering with a highly diversified pool of traditional and non-traditional vendors…”
AirPro News analysis
At AirPro News, we observe that the rapid succession of multi-billion dollar OTA agreements awarded to SpaceX underscores a fundamental shift in Pentagon procurement. By utilizing Other Transaction Authority agreements, the Space Force is bypassing traditional, often sluggish acquisition processes to field critical capabilities on an accelerated timeline. This is particularly vital given the 2028 target for the “Golden Dome” initiative.
Furthermore, the explicit linkage of the SB-AMTI program to national missile defense suggests that space-based sensing is no longer viewed merely as a support function, but as the primary nervous system for future combat operations. While the Space Force publicly emphasizes vendor diversity, noting that SpaceX is just one of nine companies selected for the vendor pool, the sheer financial volume of SpaceX’s recent awards indicates that the industrial base for national security space is heavily reliant on a few highly capable mega-constellation providers.
Frequently Asked Questions
What is the SB-AMTI program?
The Space-Based Airborne Moving Target Indicator (SB-AMTI) is a U.S. Space Force initiative designed to deploy a constellation of satellites capable of detecting, tracking, and targeting airborne threats globally from space.
How much is the SpaceX contract worth?
The U.S. Space Force awarded SpaceX a $4.16 billion Other Transaction Authority (OTA) agreement for the SB-AMTI program on May 29, 2026.
When will the SB-AMTI system be operational?
The Space Force projects the deployment of an initial SB-AMTI satellite constellation by 2028, with second- and third-generation systems anticipated by 2035.
Sources
Photo Credit: Starbase Texas
Space & Satellites
NASA X-59 Set for First Supersonic Flight in June 2026
NASA’s X-59 experimental aircraft will make its first supersonic flight in June 2026 to test quiet supersonic technology and reduce sonic booms.
NASA’s experimental X-59 aircraft is preparing to cross a historic aviation threshold. According to an official press release from the space agency, the quiet supersonic research aircraft is scheduled for its first supersonic flight in early June 2026. This milestone marks a critical phase in NASA’s Quesst (Quiet SuperSonic Technology) mission, which seeks to demonstrate that an aircraft can break the sound barrier without producing a disruptive sonic boom.
Since its maiden flight in October 2025, the X-59 has successfully completed 14 subsonic test flights, according to NASA’s project data. The upcoming tests will transition the aircraft into a rigorous “envelope expansion” phase. By gathering precise acoustic data, NASA ultimately hopes to provide federal and international regulators with the evidence needed to reconsider the 53-year-old ban on commercial supersonic flight over land.
To prepare for these high-stakes flights, the X-59 team has recently accelerated its testing cadence. NASA reports that in late April 2026, the ground crew and flight team successfully executed two test flights in a single day for the first time, demonstrating the aircraft’s growing reliability.
The Quesst Mission and Envelope Expansion
Pushing Toward Mach 1.4
The initial supersonic test scheduled for early June 2026 will see the X-59 cross the sound barrier, exceeding 630 mph, at an altitude of approximately 43,000 feet. Following this initial breakthrough, NASA plans to push the aircraft toward its ultimate “mission conditions.” Official specifications dictate a target cruising speed of Mach 1.4 (approximately 925 mph) at an altitude of 55,000 feet.
In the agency’s press release, Cathy Bahm, Project Manager for NASA’s Low Boom Flight Demonstrator, emphasized the importance of this testing phase:
“What comes next is the first time this one-of-a-kind aircraft will fly supersonic. We are starting toward the mission conditions test point that X-59 was designed for.”
Bahm further noted that completing the first mission-conditions flight is a significant milestone, as it allows the team to verify that the aircraft performs safely in its intended environment.
Engineering a “Quiet Thump”
Unconventional Design and Testing Methodology
The X-59 was built by Lockheed Martin Skunk Works under a $247.5 million contract awarded by NASA in 2018. To achieve its acoustic goals, the aircraft features a highly unconventional design. According to project specifications, the nose accounts for nearly a third of the aircraft’s total length. This elongated structure is engineered specifically to scatter shock waves before they can merge into a loud sonic boom.
Because of this unique aerodynamic shape, the cockpit lacks a forward-facing windshield. Instead, NASA equipped the X-59 with a high-resolution External Vision System (XVS), which feeds live camera footage to an in-cockpit monitor to allow pilots to navigate safely.
NASA test pilot Jim ‘Clue’ Less detailed the cautious approach the flight team is taking during this envelope expansion phase:
“From here on out, once we’re airborne, we can increase speed and increase altitude in small, measured chunks, looking at things as we go and not getting ahead of ourselves.”
During these initial supersonic flights, the public will not yet hear the anticipated “quiet thump.” NASA states that the X-59 will be accompanied by a traditional F-15 chase plane equipped with a specialized shock-sensing probe. The traditional sonic boom produced by the F-15 will obscure the X-59’s quieter acoustic signature from observers on the ground.
AirPro News analysis
We view the upcoming June 2026 flights as a pivotal moment not just for NASA, but for the broader commercial aviation industry. In 1973, the Federal Aviation Administration (FAA) banned commercial supersonic flights over U.S. land due to severe noise pollution. For historical context, the retired Concorde produced a sonic boom of about 105 to 110 Effective Perceived Noise Level in decibels (EPNdB). NASA’s target for the X-59 is a mere 75 EPNdB, roughly equivalent to the sound of a car door closing 20 feet away.
If the current Phase 1 envelope expansion is successful, NASA will move to Phase 2 (Acoustic Validation) later in 2026, utilizing a 48-kilometer-long array of 125 sonic boom recorders in the Mojave Desert. Phase 3 will involve flying the aircraft over selected U.S. communities to gather public feedback. We believe that this methodical, data-driven approach is the most viable pathway for the aerospace sector to establish new noise standards and potentially unlock a new era of overland commercial supersonic travel.
Frequently Asked Questions (FAQ)
What is the NASA X-59?
The X-59 is an experimental research aircraft developed by NASA and Lockheed Martin as part of the Quesst mission. It is designed to fly faster than the speed of sound without producing a loud sonic boom, reducing the noise to a quiet “thump.”
When is the X-59’s first supersonic flight?
According to NASA, the aircraft is scheduled to make its first supersonic flight in early June 2026, crossing the sound barrier at an altitude of approximately 43,000 feet.
Why does the X-59 have no forward windshield?
To prevent shock waves from merging into a sonic boom, the X-59 requires an exceptionally long, pointed nose, which obstructs forward visibility. Pilots use an External Vision System (XVS), a network of cameras and screens, to see directly in front of the aircraft.
Sources
Photo Credit: NASA
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