In-Situ Ablation Sensor and Numerical Modeling to Study Three-Dimensional Woven Carbon/Phenolic Ablative
A three-dimensional woven carbon/phenolic (3D C/Ph) ablative manufactured by Airbus Safran Launchers, Le Haillan, France has been studied to gain insight to the material’s internal and surface behaviors. An oxy-acetylene flame was applied to the surface of the 3D C/Ph ablative to simulate a medium heat flux of 350 W/cm2 for a test duration of 100s under a non-oxidative test environment. The “In-situ Ablation Sensor” technique, a real-time ablation measurement technique, was implemented in this study. This well-established measurement technique allows the recession rate of the 3D C/Ph material to be characterized electronically, while simultaneously recording the ablative’s internal temperature profile during flame exposure. The surface behavior of the ablative was also characterized using advanced diagnostics by utilizing a two-color Infrared (IR) pyrometer, IR video camera, and high definition (HD) video camera. Through the usage of these measurement devices, an optical as well as an electronic ablation rate and surface behaviors of this novel 3D C/Ph ablative were investigated under realistic conditions. This paper also details an ongoing investigation with the objective of establishing the “In-situ Ablation Sensor” as an effective method for monitoring the health of solid rocket motor (SRM) ablative materials, such as the 3D C/Ph material through experimentation supported by theoretical modeling.
Author: Justin Sammak, Jake Celler, Michael Guarino, Daniel Schlomer, and Joseph H. Koo
Conference: SAMPE Seattle 2017