Using Isothermal Microcalorimetry to Determine Compatibility of Structural Materials with High-Test Hydrogen Peroxide (HTP) Propellant

Abstract

High-Test Hydrogen Peroxide (HTP) propellant (equal to or greater than 70%) offers many advantages in space launch applications. However, materials used in construction of propulsion systems must be shown to be compatible with HTP. Isothermal Microcalorimetry (IMC) was used to determine the compatibility of several metallic and non-metallic materials with 90% HTP. The results of these experiments agreed with those from immersion bath tests when the values were converted to % Active Oxygen Loss per week (%AOL/wk).