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Business/Financial

Anduril, RTX Static Fire Rocket Motor Using Highly Loaded Grain For Air-To-Air Missile

By Cal Biesecker

Tuesday, October 7th, 2025

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Anduril, RTX Static Fire Rocket Motor Using Highly Loaded Grain For Air-To-Air Missile

Static fire of heavywall rocket motor with Highly Loaded Grain for air-to-air missile. Photo: Anduril Industries

Anduril Industries and RTX's [RTX] Raytheon have completed static test fires of a solid rocket motor (SRM) featuring Highly Loaded Grain (HLG) propellant for air-to-air weapon systems. The HLG configuration allows for more propellant to be loaded into the rocket motor case, enabling longer range and higher specific impulse, resulting in better performance. The testing “validated the performance of a heavywall SRM configured in a HLG configuration built by Anduril,” the company said. Heavywall refers to the rocket case being…

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