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Space Industry: How SEPAC Serves Astronautic Missions

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Aviation – Industries

Announcing the SEB-Max™

Built for aerospace and defense, The SEB-Max™ is designed for reliability in the toughest environments — enabling simplified selection and faster delivery for mission-critical applications.

 
Space operations have no room for failure. SEPAC specializes in building custom electromagnetic clutches and brakes for the space industry. Common applications include the control of satellite positioning, thrust vector control actuation, robotic manipulator positioning, docking and umbilical actuation, and other space-bound systems. We build every component with safety mechanisms and exact adherence to customer specifications for successful operation. Our engineering team creates functional designs that can meet complex performance requirements.

Our ISO 9001:2015 and AS9100D certifications demonstrate our dedication to reliability and quality. See below to learn more about how our products are used in common space applications.

Custom Products

Space is an extreme environment that requires specialized, reliable components. Performance requirements and regulations for space applications are continually developing alongside the innovations in this industry. Many applications also demand custom products to meet demanding requirements. That’s why SEPAC develops motion control system components designed to function through long-term exposure to:

  • Extreme heat and cold
  • High levels of shock and vibration
  • Vacuum conditions

Addressing our space industry customers’ dynamic and evolving needs, SEPAC offers extensive design, development, and testing services to create custom electromagnetic brakes and clutches according to various challenging parameters. Examples of customizations we provide include:

  • Sensors
  • Manual release mechanisms
  • Pulleys and gears
  • Mounting configurations
  • Torque capacity
  • Friction materials for dynamic stopping or holding
  • Friction material suitable for vacuum environments
  • High-temperature windings
  • Enclosures
  • Small envelope sizes
  • Components optimized for weight and durability requirements
  • Coatings for environmental considerations
  • Advanced bore/spline sizes and design

SEPAC’s Space Pedigree

SEPAC’s Work on the DEEDS Project

SEPAC is a proud partner of Motiv Space Systems, a contractor of NASA’s Distributed Extreme Environments Drive System (DEEDS) project. The DEEDS project aims to produce a scalable, modular actuation system that will enable long-term operations on Mars and the Moon. The project addresses NASA’s “Survive and Operate Through the Lunar Night” goals, as systems in space must endure temperatures as low as -180 °C.

Current systems are kept warm by an external power source, but DEEDS aims to eliminate external heaters and thereby reduce the required power burden on actuation systems. Applications for DEEDS technology range from ISRU systems to payload off-loading to robotics and more.

As a leading manufacturer of motion control products, SEPAC is developing cryogenic braking systems that can withstand extreme cold and heat in space without external support. With our vast experience and knowledge, we have the capacity to create custom products for DEEDS and other critical space projects.

Speak With An Engineer About Your Space Application Today!

Contact our team to discuss your specific challenges and tell us what you need from your custom braking systems.

SPACE APPLICATIONS

Energy Applications

Commercial Space Vehicle

Thrust Vector Control Actuation

SEPAC brakes hold the thrust vector controller in place to ensure proper motion control. Critical applications such as a TVCA require precision as the actuator positions the nozzle to the correct angle for reliable control of the flight path. Once into position, the brake is engaged and holds the actuator steady, even under the most extreme vibration conditions.

Docking System Actuation

SEPAC power-off brakes are used in NASA’s docking system to hold motors on components like latches, separation, and umbilical actuators. As a global standard for ISS interfacing, this system will also support many future space vehicles.

Latch, Separation, and Umbilical Systems

We serve space organizations around the globe with precision-built motion control solutions. These solutions help docking systems and reduce the risk of failure or malfunction. NASA’s docking systems use our brakes in motors and actuators for latch, separation, and umbilical systems.

Satellite

Thrust Vector Control Actuation

SEPAC brakes hold the thrust vector controller in place to ensure proper motion control. Critical applications such as a TVCA require precision as the actuator positions the nozzle to the correct angle for reliable control of the flight path. Once into position, the brake is engaged and holds the actuator steady, even under the most extreme vibration conditions.

Robotic Manipulation

SEPAC’s Electromagnetic brakes can be designed to hold positioning of robotic arms, solar panel arrays, inspection equipment.

Space Solar Applications

SEPAC brakes help hold satellite-based solar panels in place to acquire the most energy from the sun. Actuators on these satellites allow the solar panels to face the sun no matter the relative position. Once the panels are in the most efficient position for solar energy absorption, the brakes engage and hold position.

Exploration Vehicle

Robotic Manipulation

SEPAC’s Electromagnetic brakes can be designed to hold positioning of robotic arms, solar panel arrays, inspection equipment.

Space Solar Applications

SEPAC brakes help hold satellite-based solar panels in place to acquire the most energy from the sun. Actuators on these satellites allow the solar panels to face the sun no matter the relative position. Once the panels are in the most efficient position for solar energy absorption, the brakes engage and hold position.

Safety/Parking Brake

SEPAC designs brakes that are capable of withstanding space environments. These brakes can be used to hold the position of exploration vehicles in place on even the most extreme terrains.

Astronaut Transfer Vehicle

Thrust Vector Control Actuation

SEPAC brakes hold the thrust vector controller in place to ensure proper motion control. Critical applications such as a TVCA require precision as the actuator positions the nozzle to the correct angle for reliable control of the flight path. Once into position, the brake is engaged and holds the actuator steady, even under the most extreme vibration conditions.

Docking System Actuation

SEPAC power-off brakes are used in NASA’s docking system to hold motors on components like latches, separation, and umbilical actuators. As a global standard for ISS interfacing, this system will also support many future space vehicles.

Latch, Separation, and Umbilical Systems

We serve space organizations around the globe with precision-built motion control solutions. These solutions help docking systems and reduce the risk of failure or malfunction. NASA’s docking systems use our brakes in motors and actuators for latch, separation, and umbilical systems.

Environmental Considerations

Our design and engineering experts work with customers from the beginning to analyze product requirements and determine the best material choices, protective coatings, finishes, and electrical configurations so that your project succeeds.

In space applications, parts will need to reliably operate in environmental extremes for extended periods. That’s why we’ve invested decades into developing solutions to environmental concerns like:

  • Deep space environments
  • Low orbit environments
  • Extreme temperature ranges
  • Vacuum environments
  • Exposure to radiation

Materials

SEPAC builds high-performance space components from the following materials.

Vacuum Potted Coils

We encase subcomponents like coils to ensure they will perform reliably amid extreme vacuum conditions.

Non-Outgassing Friction Material

Our non-outgassing materials do not deteriorate while in vacuum conditions. Without these specialized friction materials, components would quickly deteriorate and become unreliable.

Low FOD

Foreign Object Debris (FOD) is a broad category of debris or sediment that could cause malfunctions and breakdowns if they’re allowed into the internal workings of assemblies. We use seals and materials to reduce or eliminate the system’s exposure to FOD to make space applications as safe as possible.

SEPAC’s Space Capabilities

At SEPAC, we’re continually evolving to stay ahead of the diverse demands of space applications. With our cutting-edge capabilities and strict adherence to quality standards, you can partner with a team that:

  • Is experienced in designing custom space components from scratch
  • Offers engineer-to-engineer support from the start
  • Has a proven track record of developing quality products that have been successfully integrated into harsh space applications

Our electromagnetic clutches and brake systems are lightweight, compact, and low-maintenance. Our prototyping lab allows us to develop custom configurations for your next project.

Contact us today to learn more about our production and custom design capabilities, or request a quote to get started with your space application.

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Case study

Challenge

SEPAC was contracted by a premier aerospace supplier to design and manufacture multiple models of brakes for the next generation of the International Space Station and other space travel applications.

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Solution

Over an extended period of time, SEPAC worked directly with the customer’s project team to develop a fail-safe brake that met the extremely tight performance and design tolerances associated with this highly specialized application. Additionally, SEPAC implemented design safeguards that were suited to withstand the unforgiving, zero gravity environment.

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Production

After the custom design was approved, SEPAC manufactured the brakes. To ensure that all design requirements were met, the process required extensive planning, significant vendor interaction, and innovative manufacturing techniques spearheaded by SEPAC.

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Result

The team at SEPAC successfully designed multiple solutions for the aerospace client, solutions that have the potential to be used in space travel for decades to come.

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