ABL Space Systems is developing the RS1 launch vehicle to provide deployable and high-cadence access to orbit for commercial, government and defense missions. Designed from the inception for operational simplicity and rapid deployment, RS1 combines a modular launch architecture, in-house propulsion technology and streamlined manufacturing processes to support responsive launch operations from a wide range of locations. ABL Space Systems is building a launch system capable of meeting the growing demand for reliable and operationally flexible orbital launch services. RS1 addresses these requirements through a launch system engineered for mobility, rapid deployment and efficient operations without relying on extensive fixed launch infrastructure.
The RS1 launch vehicle was developed to support a future where orbital launches can be conducted more frequently, from more locations and with reduced operational complexity. RS1 is designed to be transported and operated with a relatively small logistical footprint. This approach enables launch campaigns to be established closer to customer requirements while reducing preparation time and simplifying deployment. The vehicle’s architecture balances operational flexibility with proven engineering solutions, allowing customers to access dedicated launch services for satellites across a wide range of commercial, scientific, civil and national security applications. A defining characteristic of RS1 is the emphasis on deployability. ABL engineered the launch vehicle so that each stage fits within standard shipping containers. This enables the complete rocket to be transported efficiently using conventional air, land or sea transportation without requiring specialized oversized logistics. The ability to move the launch system using existing transportation infrastructure allows operators to establish launch capability at multiple locations while supporting responsive mission requirements. This modular transportation strategy also simplifies international deployment and enables launch operations to be conducted from a wider variety of approved launch sites. RS1 is designed to be prepared for launch using fewer personnel, less infrastructure and shorter preparation timelines than many traditional launch systems. The vehicle utilizes liquid oxygen (LOX) together with RP-1 or Jet-A fuel, propellants that are widely available at airports and industrial facilities around the world. By relying on commonly available propellants and minimizing ground support requirements, ABL aims to simplify launch logistics while enabling more responsive mission execution. These characteristics make the vehicle particularly well suited for missions where launch responsiveness and operational flexibility are important considerations.
The RS1 launch vehicle incorporates a metallic payload fairing designed to protect satellites throughout atmospheric ascent. During launch, the fairing shields the payload from aerodynamic forces, heating and acoustic environments encountered while traveling through Earth’s atmosphere. Internally, the fairing incorporates acoustic protection systems that reduce vibration and sound pressure levels experienced by sensitive spacecraft during powered flight. The fairing consists of a two-piece assembly that separates along a longitudinal seam once aerodynamic heating has decreased below required limits. RS1 employs non-pyrotechnic separation devices, reducing shock loads transmitted to customer payloads during fairing deployment. This lower-shock separation approach supports spacecraft carrying delicate scientific instruments, optical payloads and precision electronic systems. At the core of RS1’s propulsion system is the E2 rocket engine, developed, manufactured and tested entirely by ABL Space Systems. The E2 is a liquid oxygen and RP-1 gas-generator cycle and turbopump-fed rocket engine. ABL selected the well-established gas-generator architecture to emphasize engineering simplicity, manufacturability, and operational reliability. The first stage of RS1 is powered by nine E2 engines, providing the thrust required for liftoff and ascent through the lower atmosphere. The second stage utilizes a single E2 engine, enabling orbital insertion after stage separation. Using a common engine architecture across both stages simplifies manufacturing, testing, logistics, maintenance and production while reducing overall system complexity. ABL intentionally based the E2 propulsion system on mature engineering concepts that have demonstrated successful performance throughout the history of spaceflight. The gas-generator engine cycle has powered numerous historic launch vehicles, including the engines used on the Saturn V Moon rocket. By selecting this established propulsion architecture, ABL reduces development complexity while concentrating engineering effort on manufacturing efficiency, operational readiness and production scalability. This philosophy reflects the company’s emphasis on utilizing proven technologies where appropriate while applying modern manufacturing techniques to improve production speed and cost efficiency.
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One of the distinguishing aspects of the E2 engine is the manufacturing approach. ABL combines traditional manufacturing techniques with advanced additive manufacturing to optimize both performance and production efficiency. Components requiring intricate internal flow passages such as the thrust chamber and turbopumps are manufactured using metal additive manufacturing (3D printing). These parts are produced as near-net-shape components using high-performance metal alloys before undergoing precision machining to achieve final tolerances. For structural components that do not require complex internal geometries, ABL employs conventional forging and machining processes that provide proven reliability while minimizing manufacturing cost and lead time. This hybrid manufacturing strategy allows each component to be produced using the method best suited to the functional requirements. The simplicity of the E2 engine architecture contributes directly to manufacturing efficiency. By minimizing unnecessary design complexity and utilizing standardized production methods, ABL has developed an engine that can be assembled rapidly while maintaining consistent quality. The company’s vertically integrated approach, covering engine design, manufacturing, assembly and testing supports streamlined production workflows and allows engineering teams to optimize the propulsion system throughout its development lifecycle. Efficient manufacturing is particularly important as launch cadence increases and satellite operators require more frequent access to orbit.
RS1 is designed to support dedicated launches for numerous satellite applications. Potential missions include Earth observation, communications, scientific research, technology demonstrations, national security payloads, remote sensing, space situational awareness and commercial satellite constellations. The deployable architecture enables customers to launch from multiple locations while reducing logistical complexity associated with traditional launch campaigns. The vehicle’s dedicated launch capability also provides greater scheduling flexibility compared with rideshare missions, allowing satellites to reach their intended orbital destinations according to mission-specific requirements. Through the RS1 launch vehicle, ABL Space Systems combines containerized transportability, simplified launch operations, flight-proven propulsion architecture, advanced manufacturing and modular engineering into a launch system designed for responsive orbital access. By integrating the in-house E2 engines, deployable launch infrastructure, metallic payload fairing with low-shock separation and hybrid manufacturing philosophy, RS1 provides a practical and scalable solution for customers requiring reliable access to space with reduced operational complexity.
About ABL Space Systems
ABL Space Systems is a launch vehicle and aerospace company headquartered in El Segundo, California, USA, specializing in the development of integrated launch systems for commercial, civil and national security missions. The company designs and manufactures the RS1 small launch vehicle, the E2 rocket engine and the GS0 containerized ground launch system to provide flexible and deployable orbital launch capabilities. ABL develops the propulsion systems, launch vehicles, avionics and ground infrastructure in-house, enabling end-to-end launch solutions designed for responsive space access. Through the focus on vertically integrated manufacturing, transportable launch infrastructure and standardized launch operations, ABL Space Systems supports dedicated satellite missions requiring reliable and operationally flexible access to orbit.
