Real-Time, programmable automation controller (PAC) with 7 I/O slots
UEIPAC 700
Real-Time, GigE, programmable automation controller (PAC) with 7 I/O slots
UEIPAC 700-1G
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Redwire, a global leader in space and defense technology company, designed and developed the Heat Transfer Host 2 (
To meet the demanding requirements of
Reliable Data Acquisition in Microgravity: Capturing high-resolution thermal and optical data synchronized with the data acquisition channels.
Remote Experiment Control: Enabling ground-based teams to operate and monitor experiments aboard the ISS with precision and minimal latency.
Modular Integration of Diverse Diagnostics: Supporting infrared cameras, optical interferometry, and Fourier-based deflectometry within a unified control and data framework.

Repeatable Experiment Protocols: Facilitating multiple runs of each experiment with consistent environmental conditions and system stability.

On-Orbit Hardware Reliability: Deploying rugged, space-rated systems that operate autonomously in the ISS environment over extended periods.
Redwire selected UEI’s 7-slot programmable automation controller (UEIPAC) system to serve as the embedded control and data acquisition backbone for




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"I’M HAPPY TO REPORT THE UEIPAC, ALONG WITH THE OTHER ELEMENTS OF THE PAYLOAD, ARE WORKING WELL AND PRODUCING SCIENCE DATA IN THE EUROPEAN SEGMENT OF THE ISS! THANK YOU FOR YOUR FINE PRODUCT AND SUPPORT." —ERIK LEUSSINK | SENIOR SOFTWARE ARCHITECT |
UEI’s embedded systems gave Redwire the flexibility and reliability needed to support ESA’s

ESA’s Heat Transfer Host 2 facility is now a cornerstone of space-based thermal science, enabling researchers to study condensation, evaporation, and fluid dynamics in microgravity with unprecedented clarity.

With UEI’s UEIPAC at the heart of the system and Redwire’s mission integration expertise,

UEI’s engineering support and versatile hardware platform have empowered Redwire to deliver a dynamic, reliable research environment that meets the demands of modern space science.
