Thick Multi-Layer Insulation (MLI) System and Design Software Tool

"A thick multilayer insulation (MLI) system is proposed for meeting the cryogenic fluid storage requirements of future space missions. This thick MLI system will be an integration of the most promising new technologies and advances in materials,fabrication processes, assembly techniques, and supplemental components. As a primary part of the proposed effort, an MLI software design tool will be constructed using a layer-by-layer analysis based on first principles. Developed from a systemdesigner's perspective, this design tool will enable rapid analytical investigation of candidate thick MLI technologies while providing accurate thermal performance predictions for a wide variety of applications. Lastly, a concept for full-scaledemonstration in Phase II of an optimal thick MLI system for liquid hydrogen tankage will be developed. Advanced passive insulation technologies and related design tools developed under this proposal will have direct and immediate application to a varietyof space missions requiring long-term storage of cryogens. These missions include: interplanetary missions, orbital depots, space based directed energy weapons, orbit transfer vehicles, and lunar/Mars outposts. Other commercial industries where cryogensare stored and/or transported would benefit from enhanced thermal performance of cryogen storage vessels and the subsequent reduction of boil-off gases that represent both a financial loss and potential negati