MOOG Inc.

01/08/2024 | News release | Distributed by Public on 01/08/2024 23:16

The New Model S Thruster Gimbal Assembly

The New Model S Thruster Gimbal Assembly

In the fast-evolving world of space technology, small satellites are being used for a wide range of applications, from Earth observation to communication. Central to their success is the propulsion system, which ensures they can maneuver effectively once in space. Moog has developed an innovative thruster gimbal assembly that offers precise control over movement.

One of the challenges that electric propulsion systems face is being able to protect the sensitive components during launch, while accurately adjusting and maneuvering the direction of the thrusters on the system, as well as the offloading of the gimbal. Previous configurations of gimbals for electric propulsion thrusters required extensive structure and support mechanisms to support the thruster during launch and offload the sensitive components of the gimbal. This complicated problem needed to be addressed to design a more efficient and effective gimbal assembly.

Integrated Launch Lock and Vibration Isolation

The new Model-S Thruster Gimbal Assembly is specifically designed for the small satellite market. It contains an integrated lock-launch mechanism and vibration isolators.

One of the main responsibilities of the integrated launch-lock is protecting and ensuring the vital components of the gimbal, such as the actuators and the potentiometer assemblies, survive the launch-induced loads. The integrated launch-lock mechanism is designed to limit the exposure of the payload from high shock and vibration loads. Excessive vibrations can cause damage to the thruster or affect its performance.

The videos below show the release of the launch lock mechanism from the thruster gimbal assembly.

Once the launch-locks are deployed, the gimbal can move and rotate within its normal range of motion without being restricted by the launch-lock mechanism. This allows the gimbal to operate freely and perform its intended functions without any interference from the launch-locks.

"Vibration isolation between the gimbal and the thruster is required to keep the thruster within the acceptable limits and reduces the amount of force or stress that is transferred between them. By isolating the vibrations, we can ensure that the thruster operates smoothly and efficiently, while also minimizing any potential negative effects on its functionality," said Armond Asadurian, Moog Senior Engineer.

Compact Design

One of the benefits of integrating launch-lock into the gimbal design is that it occupies a much smaller volume than traditional configurations. The compact design is a significant advantage for small satellites where space is at a premium. The assembly allows for the close integration and support of the electric propulsion thruster, propellant lines, and electrical power lines, all within a minimal footprint. This efficient use of space is crucial for maximizing the payload capacity of small satellites.

"The development of the Model-S Thruster Gimbal Assembly represents an almost one-to-one ratio between the mass of the gimbal and mass of the payload that it is designed to support during launch," emphasized Asadurian.

Revolutionizing the Way to Space

The Model-S Thruster Gimbal Assembly provides a significant leap forward in small satellite propulsion technology. By ensuring reliable and precise control of the electric propulsion thruster, this gimbal assembly enhances the maneuverability and overall performance of small satellites, paving the way for more ambitious and complex space missions in the future.

Interested in speaking with Moog? Contact us at [email protected]

Armond Asadurian

  • Senior Engineer
  • Education: Bachelor of Science in Aerospace Engineering, FAA Airframe and Powerplant Technology Certificate
  • Hobbies: Car restoration, home remodeling, following the Lakers and spending time with my kids