Award Data

Niobium alloy (C-103) reaction control system (RCS) chambers have been used on numerous NASA programs. However at elevated temperatures, the strength of C-103 decreases significantly. Higher strength niobium alloys have been developed, but these alloys lack the formability of C-103. Recently, Additive Manufacture (AM) of niobium and C-103 has been demonstrated using powder bed electron beam me ...

In response to NASA’s topic T12.02 of “Extensible Modeling of Metallurgical Additive Manufacturing Processes”, Sentient proposes to incorporate its DigitalClone technique to develop a multiscale and multiphysics computational modeling suite to predict comprehensive outcomes from AM building processes, including geometrical accuracy, and resulting microstructure and defects. Figure 1 shows th ...

This proposal includes, for the first time, integrated theoretical models and experimental investigations to simulate and demonstrate femtosecond-laser-fabricated waveguides in crystalline dielectric materials. The numerical models will predict refractive-index changes potentially induced by self-focusing, heat accumulation, thermal stress, plasma formation and relaxation, and ablation. The influe ...

Opterus Research and Development, Inc. proposes to develop and validate multi-scale thin-ply High Strain Composites (HSCs) constitutive modeling tools for incorporation into commercial finite element analysis codes. The constitutive models will capture the time-temperature-load-deformation viscoelastic characteristics common to HSCs as well as the yielding or permanent deformation associated with ...

The goal of the proposed Phase I work is to demonstrate the feasibility of the coordination and control of a low cardinality (n=12) swarm of smallsats that realizes a distributed Synthetic Aperture Radar (SAR) in low Earth orbit. Preliminary mission and spacecraft design work has shown that the swarm can support SAR imaging in the L-band (1.35 GHz) with a ground range resolution finer than 10 m wi ...

This body of research focuses on developing fundamental engineering qualification methods for Thin-Ply High Strain Composites (TP-HSCs). Roccor will collaborate with NASA and Dr. Kwok of the University of Central Florida to develop and validate a robust framework for engineering the viscoelastic behavior of highly strained thin-ply composites. The material systems studied will be highly focused on ...

We propose the development of a user-friendly software tool for estimating the electric field distributions within spacecraft enclosures based on the Power Balance (PwB) method and enhanced by a database of experimentally determined Absorption Cross-Sections (ACS) of common equipment, components and cables.The software will be built around an already developed PwB solver that determines the statis ...

Plasma Controls, LLC (SBC) and Colorado State University (RI) will mature an energy and species plasma diagnostic for use with plasma thrusters. The combined Energy and Velocity Analyzer for Distributions of Electric Rockets, or the lsquo;E-VADERrsquo;, is needed especially for characterizing the plasma plume of Hall thrusters, where researchers desire to know ion energies and charged species frac ...

Opterus proposes to develop braided thin ply composite tapes. The tapes will be braided from ultra-thin spread-tow unidirectional carbon and glass ribbons and will enable a new source and form factor for thin-ply textiles. The resulting tapes will be especially useful for thin high strain composite space deployable structures where they will allow bias plies in long parts without requiring seams. ...

Today many spacecraft carry two propulsion options: high thrust required for high acceleration maneuvers such as orbit insertion and rapid response; and low thrust required for station keeping and less critical maneuvers. A new class of non-toxic monopropellants, such as AF-M315E and LMP-103S, perform well in both high and low thrust regimes. Significant investments are maturing both monopropellan ...