As the U.S. Space Force looks towards the future of space warfare, it relies on a mysterious and highly capable spacecraft known as the X-37B Orbital Test Vehicle. This 29-foot-long experimental spaceplane, capable of autonomous reentry into Earth’s atmosphere, is proving crucial for the Space Force’s strategic planning in an increasingly complex space environment.

According to Chief of Space Operations Gen. Chance Saltzman, the X-37B provides invaluable data that aids in the development of next-generation space-based capabilities. “When I have a platform like the X-37B, my mouth starts to water,” he emphasized in a recent interview. Gen. Saltzman highlighted the critical decisions he must make to equip the service with advanced technologies to maintain the U.S.’s military advantage in a contested orbital domain.

The X-37B’s Impact on Space Operations

The spacecraft has spent over 3,774 days in orbit across its first six missions, which is more than twice the cumulative time spent by NASA’s space shuttles during their operational history. Launched on its current mission, OTV-7, on December 28, 2023, it passed 400 days in orbit by January 31, 2024.

The X-37B, built by Boeing, is derived from NASA’s original X-37 program and has been transferred through various agencies before being taken over by the Air Force Rapid Capabilities Office (RCO) in 2010. It launches vertically using rockets but lands horizontally like an airplane, showcasing its reusability and advanced design.

The Space Force uses data from the X-37B’s onboard experiments and service module to inform critical decision-making. During its current mission, the spaceplane performed its first aerobraking maneuver, a technique designed to dip into lower Earth orbit using atmospheric drag, before resuming higher orbital activities. This maneuver is a significant step in demonstrating the spaceplane’s adaptability and resilience in different orbital regimes.

Technological Innovations and Collision Avoidance

The spaceplane’s primary role is to demonstrate reliable, reusable spacecraft capabilities and support experiments that can be returned to Earth for analysis. Its advanced maneuverability and extended orbital endurance make it a promising platform for future space operations.

The X-37B’s most recent mission has identified more than 1.7 million collision avoidance opportunities, a testament to the increasing complexity of space traffic. Michelle Parker, Boeing vice president for space mission systems, notes that autonomy is crucial in the congested space environment, as the spaceplane must navigate various orbital regimes safely.

Boeing developed a new automated collision avoidance system for the OTV-7 mission, integrating features for fault protection and self-direction. This advancement is pivotal for ensuring the spaceplane can operate effectively and independently in the challenging space domain.

Competing Space Forces and Strategic Preparations

International competition in space, particularly from China and Russia, has led to increased focus on space domain awareness. China has its own experimental reusable spaceplane, the Shenlong, which has completed three missions since its inaugural launch in December 2023.

Gen. Saltzman underscores the Space Force’s three main focus areas: space domain awareness, resilient on-orbit architectures, and responsible counterspace capabilities. These priorities reflect the service’s strategy to navigate the evolving space landscape and mitigate potential threats.

The Space Force sees the X-37B not just as a research and development asset but also as a training tool for understanding adversarial tactics and technologies. As space warfare becomes more prevalent, having a platform like the X-37B is critical for preparing for potential conflicts.

The Future of the X-37B Program

The Space Force plans to leverage the data collected from the X-37B to refine future spacecraft design and operational concepts. Key questions include the cost of on-orbit servicing versus satellite deorbiting and the feasibility of applying these technologies to commercial platforms.

While details on specific projects remain limited, the ongoing upgrades to the X-37B, including new generations of batteries and solar cells, demonstrate the program’s commitment to maintaining cost-effectiveness and adaptability.

Looking ahead, the new Space Futures Command will utilize the X-37B’s data to forecast space threats, conduct wargaming, and develop mission area designs. This collaboration between the Air Force RCO and Space Futures Command aims to enhance the Space Force’s overall strategic capabilities.

Conclusion: The X-37B’s Role in the New Space Age

The X-37B Orbital Test Vehicle stands as a cornerstone of the U.S. Space Force’s efforts to secure dominance in the contested orbital domain. Its data-driven approach to space operations provides critical insights for future military strategies and technological advancements.

As the space industry continues to grow, platforms like the X-37B not only serve military purposes but also open doors for commercial innovations in satellite maintenance, debris management, and on-orbit experimentation.

In a rapidly evolving space environment, the X-37B represents the cutting edge of space technology and strategy. Its continued missions will undoubtedly shape the future of military operations in space.

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