March 29, 2024

NASA’s Solar Electric Propulsion System for Gateway Moon Orbiter Throttles Up

In April, PPE engineers effectively tested the integration of Aerojet Rocketdynes thruster with Maxars power procession system and Xenon Flow Controller. Credit: NASA
Among the chief goals of NASAs Artemis program is to develop the first long-lasting existence on the Moon. A vital part of the assistance infrastructure to make that happen is Gateway, a space outpost that will orbit the moon. Long-term, Gateway will work as a staging point for deep space exploration.
It is still a bit early in the advancement cycle for Gateway. Thus far, NASA has actually focused Gateway advancement on the preliminary crucial elements needed to support the landing. Namely, the Power and Propulsion Element (PPE), the Habitation and Logistics Outpost (HALO), and logistics abilities.
The powerhouse of Gateway, NASAs orbiting outpost around the Moon and an important piece of infrastructure for Artemis, remains in the middle of several electric propulsion system tests.

The Power and Propulsion Element (PPE), being made by Maxar Technologies, provides Gateway with power, high-rate communications, and propulsion for maneuvers around the Moon and to transit between various orbits. The PPE will be integrated with the Habitation and Logistic Outpost (HALO) before the incorporated spacecrafts launch, targeted for late 2024 aboard a SpaceX Falcon Heavy. Together, these aspects will act as the center for early Gateway crewed operations and various science and technology presentations as the complete Gateway station is put together around it in the coming years.
Illustration showing a close-up of the Habitation and Logistics Outpost (HALO), one of the aspects of Gateway. Credit: NASA
The PPE engineering group is conducting a substantial electrical propulsion system test campaign to much better comprehend Gateways efficiency during various objective circumstances. The test allows engineers and mission organizers to adjust the system to ensure it meets the requirements for exploration of the Moon throughout Artemis missions.
Solar electrical propulsion is perfect for Gateway due to the fact that these systems harness the energy of the Sun, transform it to power, and then use that power to produce long-duration, extremely efficient thrust, providing objective versatility and decreased expenses. Each system includes various elements that assist the spacecraft thrust effectively: thruster(s), power processing systems (PPU), flow controllers that manage the circulation of gases, like xenon, utilized for propulsion, etc.
The developmental versions of the spacecrafts thrusters and electric propulsion systems are being evaluated at NASAs Glenn Research Center in Cleveland. NASA prepares to continue evaluating PPEs propulsion system to minimize spacecraft combination and functional threats.
During the tests, each system showed efficient in carrying out throughout the full mission power variety and specifications. Additionally, throughout the tests, the engineering group completed various launch and shut down series and thruster throttling to imitate operations around the Moon. These tests for both electric propulsion systems was necessary for finalizing design, requirements, and abilities.
The turning point propulsion system tests represent progression through the preliminary development stage, resulting in critical style review, and additional spacecraft ground testing later on this year. That ground testing will be followed by spacecraft shipment, and eventual integration with HALO prior to launch.
Dependable operation of what will be the highest-power electric propulsion system ever flown is critical for the incorporated spacecraft to finish its transit from Earth orbit to lunar orbit. It is vital for Gateways operations as a home away from house for astronauts and a lunar microgravity laboratory supporting Artemis and future missions.

The developmental variations of the spacecrafts thrusters and electrical propulsion systems are being evaluated at NASAs Glenn Research Center in Cleveland. NASA prepares to continue testing PPEs propulsion system to minimize spacecraft combination and operational risks.
Throughout the tests, each system showed capable of carrying out across the complete objective power range and criteria. Furthermore, throughout the tests, the engineering group finished various start up and shut down series and thruster throttling to imitate operations around the Moon. These tests for both electrical propulsion systems were essential for settling style, requirements, and capabilities.