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NASA X-59 Completes 25th Flight, Enters Acoustic Validation

NASA’s X-59 quiet supersonic aircraft finished initial envelope expansion and moves to acoustic validation for the Quesst mission.

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The National Aeronautics and Space Administration (NASA) X-59 quiet supersonic experimental aircraft completed its 25th test flights on August 21, 2026, validating aerodynamic models and clearing the way for the program’s critical acoustic validation phase.

In a press release issued on September 4, 2026, the agency confirmed the milestone marks the conclusion of initial envelope expansion for the centerpiece of the Quesst mission. The X-59 is designed to cruise faster than the speed of sound while producing a muted sonic thump rather than a disruptive sonic boom. Data collected during the upcoming flight phases will be shared with U.S. and international regulators to inform new noise thresholds, which could eventually lead to the lifting of the ban on commercial supersonic flight over land.

Flight envelope expansion and performance

During the 72-minute test flight originating from NASA’s Armstrong Flight Research Center in Edwards, California, the X-59 reached a speed of Mach 1.2 and an altitude of 49,000 feet. The flight followed a rapid envelope expansion campaign over the summer. The aircraft achieved its first supersonic flight on June 5, 2026, and reached its target cruise conditions of Mach 1.4 (924 mph) and 55,000 feet on June 12, 2026.

NASA Test Pilot Nils Larson described the test flights as “exciting but uneventful,” noting that the aircraft “likes to fly fast.”

The initial 25 flights focused on proving the airworthiness and baseline performance of the unique airframe, which was built by prime contractor Lockheed Martin and powered by a General Electric GE-F414 engine.

“Through our ongoing flight tests with the X-59, we’ve gained invaluable insights into both the aircraft’s performance and the unique challenges of the aircraft design,” said Cathy Bahm, Project Manager for the NASA Low Boom Flight Demonstrator project. “Each test point has validated our models and predictions, and it has strengthened our confidence in the aircraft’s performance.”

Transitioning to acoustic validation

With baseline performance established, the Quesst mission will now shift focus to measuring the sound produced by the aircraft. During the acoustic validation phase scheduled for later this year, NASA will utilize ground- and air-based tools to measure the sonic thumps generated by the X-59 at supersonic cruise speeds.

The objective is to verify that the physical aircraft meets the low-boom design targets established by computer modeling.

“This is the phase we’ve been working toward,” said Larry Cliatt, Acoustic Validation Technical Lead for the NASA Quesst mission. “Building and flying a brand-new aircraft is an extraordinary accomplishment, but the next phase is where the real research begins.”

Cliatt noted that the acoustic validation campaign will be complex and demanding. The tools and methods used to design the X-59 will be put to the test, potentially forming the foundation for future commercial supersonic aircraft development.

AirPro News analysis

The successful completion of the X-59’s initial flight test phase marks a pivotal transition for the Quesst mission. We view the upcoming acoustic validation phase as the true test of the program’s value to the broader aerospace industry. While building a supersonic demonstrator is a significant engineering feat, the X-59 is fundamentally a data-gathering tool. If the acoustic measurements match NASA’s models, the agency will possess the empirical evidence required by the Federal Aviation Administration (FAA) and the International Civil Aviation Organization (ICAO) to establish noise-based certification standards. Establishing these standards is the mandatory first step toward opening overland routes to a new generation of commercial supersonic aircraft.

Sources: NASA Quesst Blog

Photo Credit: NASA

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Space & Satellites

NASA Awards Blue Origin $700M Mars Telecommunications Contract

NASA selected Blue Origin to build the Mars Telecommunications Orbiter on its Blue Ring platform for up to $700 million.

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The National Aeronautics and Space Administration (NASA) has awarded Blue Origin a firm-fixed-price contract valued at up to $700 million to develop the Mars Telecommunications Network (MTN). The agreement, finalized on September 1, 2026, tasks the aerospace manufacturer with delivering a dedicated Mars Telecommunications Orbiter (MTO) by December 31, 2028, to replace the agency’s aging interplanetary relay infrastructure.

In a press release issued on September 2, 2026, Blue Origin confirmed the orbiter will be built on its Blue Ring spacecraft platform. The new network is designed to provide continuous, high-speed communications for future robotic and crewed missions under NASA’s broader Moon to Mars exploration strategy. The Space Communications and Navigation (SCaN) program expects the MTO to become operational in Mars orbit by 2030.

Replacing legacy Mars infrastructure

NASA’s current communications relay at the Red Planet relies heavily on legacy spacecraft, specifically the Mars Odyssey launched in 2001 and the Mars Reconnaissance Orbiter launched in 2005. The MTN contract aims to establish a modern, high-bandwidth foundation for sustained exploration in the coming decades. NASA officials stated the award marks a milestone in the agency’s strategy to expand communications and navigation services beyond Earth and the moon.

The competition for the MTN contract, initiated via a request for proposal in May 2026, was restricted by the July 2025 budget-reconciliation package. Bidding was limited to the eight companies that participated in the 2024 and 2025 commercial Mars sample return studies. Funding for the project was authorized by Congress through the Working Families Tax Cut Act.

Blue Ring platform and technical specifications

Blue Origin will utilize its Blue Ring spacecraft architecture for the MTO. The platform features hybrid solar electric and chemical (SEP-Chem) propulsion, enabling it to deploy multiple payloads and establish infrastructure ahead of human arrival. The spacecraft can carry a payload exceeding 1,000 kilograms to Mars orbit.

Production of the MTO is underway at Blue Origin’s dedicated manufacturing facility in Huntsville, Alabama. The facility is currently sized to produce four Blue Ring vehicles per year. The MTO will also feature a 20-kilogram dedicated payload capacity available for science instruments or deployable cubesats.

“MTO is the backbone of America’s Mars exploration program for the next decade and beyond and will provide the reliable communications capacity that will keep future robotic and human missions connected to each other and to Earth,” said Tory Bruno, President of Blue National Security.

Bruno added that the contract award validates the company’s development of the Blue Ring platform, noting that the hardware is ready for this specific mission profile.

AirPro News analysis

We view this $700 million contract as a critical validation of Blue Origin’s Blue Ring spacecraft program and its broader pivot toward deep space infrastructure. By securing a foundational role in the Mars Telecommunications Network, Blue Origin positions itself as an essential utility provider for all future NASA Mars operations. The aggressive delivery timeline of December 31, 2028, will test the production capabilities of the Huntsville facility, but successfully deploying the MTO would cement the company’s status as a primary contractor for interplanetary logistics.

Sources: Blue Origin

Photo Credit: Blue Origin

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Space & Satellites

NASA SpaceX Delay Crew-13 Mission Over Dragon Oxidizer Leak

NASA and SpaceX postponed the Crew-13 ISS mission after an oxidizer leak was found in the Dragon propulsion system.

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The National Aeronautics and Space Administration (NASA) and Space Exploration Technologies Corp. (SpaceX) have postponed the Crew-13 mission to the International Space Station (ISS) following the discovery of an oxidizer leak in the Dragon spacecraft’s propulsion system.

In a press release issued on August 29, 2026, NASA confirmed the delay, which pushes the launch past its original September 12, 2026, target date. The mission, launching from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida, will carry four astronauts to join Expedition 75. A new launch date remains pending while joint engineering teams evaluate the spacecraft hardware.

Prelaunch processing and hardware evaluation

The oxidizer leak was detected during standard prelaunch spacecraft processing. NASA spokesperson Joseph Zakrzewski stated the agency and SpaceX are adjusting the schedule specifically to address the propulsion system anomaly before clearing the vehicle for flight.

Engineers are currently assessing the spacecraft to determine the required corrective actions. The timeline for the mission’s progression depends entirely on the resolution of the hardware issue.

“Joint NASA and SpaceX teams are performing additional tests and data review and will complete any necessary rework prior to launch. A new target date will be announced once available,” Zakrzewski noted.

Crew-13 mission profile and historical context

The Crew-13 roster includes NASA astronauts Jessica Watkins (Commander) and Luke Delaney (Pilot), alongside Mission Specialists Joshua Kutryk of the Canadian Space Agency (CSA) and Sergey Teteryatnikov of the State Space Corporation ROSCOSMOS (Roscosmos). The crew was scheduled to enter quarantine at the Johnson Space Center in Houston approximately two weeks prior to the original launch date.

SpaceX has previously addressed oxidizer-related issues on the Dragon platform. In April 2019, a liquid oxidizer leak involving nitrogen tetroxide entering high-pressure helium tubes resulted in an explosion during a ground test of the spacecraft’s SuperDraco abort thrusters. The company subsequently redesigned the system to mitigate similar risks.

AirPro News analysis

While launch delays are routine in orbital spaceflight, propulsion system leaks require rigorous scrutiny due to the highly reactive nature of spacecraft oxidizers. The detection of this leak during standard processing validates the pre-flight checkout protocols established by NASA and SpaceX under the Commercial Crew Program. We expect the engineering teams will thoroughly trace the leak’s origin to determine whether it stems from a localized component failure or a broader systemic issue before committing to a revised launch schedule.

Sources: NASA

Photo Credit: NASA

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Astroscale Japan Signs ADRAS-J2 Launch Deal With Isar Aerospace

Astroscale Japan and Isar Aerospace contract Spectrum rocket to launch ADRAS-J2 debris removal mission in Japan’s 2027 fiscal year.

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Astroscale Japan Inc. and German launch provider Isar Aerospace have finalized an agreement to launch the ADRAS-J2 active debris removal mission on a Spectrum rocket from Norway during Japan’s 2027 fiscal year.

Announced in a joint press release on September 1, 2026, the contracts secures the launch vehicle for Phase II of the Japan Aerospace Exploration Agency (JAXA) Commercial Removal of Debris Demonstration (CRD2) project. The mission aims to become the first to capture and safely deorbit a large, non-cooperative piece of legacy space debris.

Targeting legacy orbital debris

The ADRAS-J2 (Active Debris Removal by Astroscale-Japan) spacecraft will target a derelict rocket upper stage that has remained in orbit for decades. The target debris weighs approximately three tons and measures roughly 11 meters in length and four meters in diameter. Because the upper stage was not designed with docking interfaces or navigational aids, it is classified by the industry as non-cooperative debris.

The upcoming mission builds upon the successful Phase I ADRAS-J mission, which concluded operations earlier in 2026. During Phase I, the Astroscale spacecraft demonstrated autonomous rendezvous and proximity operations. The vehicle conducted fly-around observations at a distance of 50 meters and achieved an ultra-close approach of 15 meters to the same rocket body.

“ADRAS-J2 is a pioneering mission that aims to achieve the world’s first removal of a large piece of legacy space debris that has remained in orbit for decades and was never designed for removal,” said Nobu Okada, Founder and CEO of Astroscale. “After more than half a century of human activity in space, the number of debris objects in orbit continues to increase, posing a growing threat to the long-term sustainability of the space environment.”

Expanding the Isar Aerospace partnership

The ADRAS-J2 mission will launch from Isar Aerospace’s dedicated pad at Andøya Space in Norway. The target launch window spans from April 2027 to March 2028, aligning with Japan’s 2027 fiscal year. The mission will utilize the Spectrum launch vehicle, which is designed to deliver payloads of up to one tonne to low Earth orbit (LEO).

This agreement represents the second launch contract signed between the Astroscale group and Isar Aerospace in 2026. On March 16, 2026, Astroscale’s United Kingdom subsidiary selected Isar Aerospace to launch the ELSA-M in-orbit demonstration mission. That separate mission is tasked with capturing an end-of-life Eutelsat OneWeb satellite.

“ADRAS-J2 is the kind of mission that defines the future of space operations. It requires precision, flexibility, and the ability to reach the right orbit at the right time,” said Stella Guillen, Chief Commercial Officer at Isar Aerospace. “This second launch agreement reflects the confidence our customers place in our team and technology and deepens a partnerships that is advancing the next generation of space missions.”

AirPro News analysis

We view the consecutive contracts between Astroscale and Isar Aerospace as a strong indicator of maturing supply chains within the commercial space sector. By securing a second dedicated launch for a complex rendezvous mission, Astroscale is standardizing its deployment strategy across different international subsidiaries. For Isar Aerospace, capturing high-profile payloads from a Japanese government-backed initiative demonstrates growing confidence in the European micro-launcher market. Dedicated small launch vehicles like Spectrum are proving highly competitive for active debris removal missions, which require precise orbital insertion parameters that traditional rideshare missions cannot easily accommodate.

Sources: Isar Aerospace

Photo Credit: Isar Aerospace

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