Modular Optical Sensor for Hypergolic Leak Detection

Intelligent Optical Systems (IOS) proposes to adapt and advance its recently developed intrinsically safe hypergolic leak detection technique, based on its well established optical sensing techniques, for developing a modular liquid hypergolic propulsion (LHP) leak detection sensor. We have identified highly stable and sensitive colorimetric indicators for monomethylhydrazine (MMH) and nitrogen oxides (MON25), and will adapt them for an optical LHP leak detection transducer as a drop-in module for THAAD missiles. This optical leak detection transducer module will exhibit sensitivity (i.e., 100 ppm MON25, 300 ppm MMH, or better), response time, miniaturization, power consumption, lifetime, and ruggedness against shock and vibration that comply with THAAD storage, transportation, and operation requirements. In collaboration with Lockheed Martin, the prime contractor on the THAAD program, IOS will optimize design and performance to meet all THAAD safety requirements. Phase I will demonstrate the optical sensor components, and identify safety issues and requirements for system design. The established basis, building on our prior and ongoing developments, will enable IOS to address the specific THAAD requirements and deliver an advanced sensor that suits the MDA need.