CHIMERIC RSV SUBGROUP A AND B VACCINE CANDIDATES

Not Available Physical Sciences Inc., Thiokol Propulsion, and Lockheed Martin Missile and Space propose to develop spacecraft structural materials which can withstand mechanical loads during launch and can be consumed as propellants for on-orbit propulsion. Spacecraft structural elements incorporated specifically to protect the payload from launch and separation loads represent parasitic mass after orbit insertion. Consumption of this structural mass to generate useful propulsive thrust will reduce the onboard propellant mass necessary for orbit maintenance and end-of-life operations, increase revenue-producing payload mass, and/or increase the orbital lifetime of telecommunications and other satellites. Traditional materials such as aluminum or graphite composites do not qualify as dual-function structural-propellant materials. We propose novel structural thermoplastic composites as promising candidates. Available commercially at low cost, these low density materials have good structural properties similar to those of aluminum. They also have desirable physicochemical characteristics as a monopropellant or bipropellant constituent. We will 1) analyze structural and chemical performance of the materials, 2) design a composite propulsive structural component for strength/stiffness, efficient volumetric heat addition, and routing of reaction products, and (iii) fabricate and test the component. At the conclusion of Phase I, we will deliver a small scale demonstration propulsive component to the Air Force.