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Lockheed Martin has put its fifth Advanced Extremely High Frequency (AEHF-5) satellite through its paces in realistic simulations of its future launch experience. The satellite completed the tests successfully and is now in system-level testing in preparation for delivery to the US Air Force in 2019.

For the 39 days of Thermal Vacuum Chamber (TVAC) testing, AEHF-5 was subjected to extreme cold and heat in zero atmosphere, to simulate its upcoming on-orbit life. TVAC is a part of a battery of tests that ensure a satellite will arrive in space functionally sound and ready to operate through the extreme temperature changes of space.

Following the TVAC test series, AEHF-5 completed acoustic testing, where the satellite was subjected to high intensity, low frequency sound waves that simulated the vibrations generated by a rocket propelling its payload from zero to over 17,500 miles per hour in under eight minutes.

Following its anticipated 2019 launch, the satellite will join the AEHF constellation that continues to provide global, highly-secure, protected and survivable communications for US and allied warfighters on ground, sea and air platforms.

Michael Cacheiro, Vice President for Protected Communications at Lockheed Martin Space, said: “TVAC and acoustic tests are critical milestones in the production cycle of a satellite, where we have one shot to get it right, so we take every precaution to ensure the vehicle is ready for the harsh space environment.

“We design and build our AEHF satellites to serve our military’s strategic and tactical protected communications needs. The team and the satellite performed flawlessly, and AEHF-5 is now in system level testing.”

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Advanced Extremely High Frequency AEHF-5 Lockheed Martin US Air Force

Post written by: Matt Brown


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