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Company Information:

Company Name: Grainflow Dynamics, Inc.
City: Livermore
State: CA
Zip+4: -
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Website URL: N/A
Phone: (925) 447-4293

Award Totals:

Program/Phase Award Amount ($) Number of Awards
SBIR Phase I $820,905.00 8
SBIR Phase II $599,619.00 1

Award List:

High Fidelity Regolith Simulation Tool for ISRU Applications

Award Year / Program / Phase: 2008 / SBIR / Phase I
Agency: NASA
Principal Investigator: Otis Walton, Principal Investigator
Award Amount: $99,808.00
Abstract:
NASA has serious unmet needs for simulation tools capable of predicting the behavior of lunar regolith in proposed excavation, transport and handling systems. Current simulation tools do not include the effects of triboelectric and photo-ionization induced charges on regolith particles. Existing… More

High Fidelity Multi-Scale Regolith Simulation Tool for ISRU

Award Year / Program / Phase: 2009 / SBIR / Phase II
Agency: NASA
Principal Investigator: Otis Walton, Principal Investigator
Award Amount: $599,619.00
Abstract:
NASA has serious unmet needs for simulation tools capable of predicting the behavior of lunar regolith in proposed excavation, transport and handling systems. Existing discrete element method (DEM) or finite element (FE) models lack adequate fidelity for fine cohesive powders comprised of friable… More

Solid-Solid Vacuum Regolith Heat-Exchanger for Oxygen Production

Award Year / Program / Phase: 2009 / SBIR / Phase I
Agency: NASA
Principal Investigator: Otis Walton, Principal Investigator
Award Amount: $99,603.00
Abstract:
This SBIR Phase-1 project will demonstrate the feasibility of using a novel coaxial counterflow solid-solid heat exchanger to recover heat energy from spent regolith at 1050oC to pre-heat inlet regolith to 750oC, either continuously, or in 20kg batches. In granular solids the area of contacts… More

Low-Gravity Mimicking Simulants and Evaluation of Simulant Flow

Award Year / Program / Phase: 2010 / SBIR / Phase I
Agency: NASA
Principal Investigator: Otis Walton, Principal Investigator
Award Amount: $99,725.00
Abstract:
This project will provide a new method for testing flow/no-flow conditions and other gravity-driven flow behavior of Lunar or planetary regolith under reduced gravity, through the use of surrogate regolith simulants which mimic the effects of reduced gravity. New calibration data for numerical flow… More

Centrifuging Step-Screw Conveyor for Regolith

Award Year / Program / Phase: 2010 / SBIR / Phase I
Agency: NASA
Principal Investigator: Otis R. Walton, Principal Investigator
Award Amount: $99,949.00
Abstract:
A variety of ISRU operations will utilize lunar regolith as feedstock. The proposed centrifuging step-screw conveyor concept will provide a well controlled robust, reliable, dust-free method of transporting loose regolith over short distances (up to 10's of meters) at any inclination angle, ranging… More

Centrifugal Sieve for Size-Segregation/ Beneficiation of Regolith

Award Year / Program / Phase: 2011 / SBIR / Phase I
Agency: NASA
Principal Investigator: Otis Walton, Principal Investigator
Award Amount: $97,000.00
Abstract:
Utilizing centrifugal force as the primary body-force, combined with both shearing flow and vibratory motion the proposed centrifugal-sieve separators can provide efficient gravity-level-independent size classification of granular feedstock like lunar regolith. Standard size separation methods for… More

Enhanced Mesh-Free Simulation of Regolith Flow

Award Year / Program / Phase: 2011 / SBIR / Phase I
Agency: NASA
Principal Investigator: Scott M. Johnson, Principal Investigator
Award Amount: $100,000.00
Abstract:
NASA needs simulation tools capable of predicting the behavior of regolith in proposed excavation, transport, and handling or sample acquisition systems. For engineering-scale problems FE analyses utilizing soil-mechanics-based constitutive models have long been utilized in civil engineering to… More

High-Pressure Gas-Powered Dispersal of Fine Obscuration Particulates

Award Year / Program / Phase: 2011 / SBIR / Phase I
Agency: DOD
Principal Investigator: Otis Walton, President – (925) 447-4293
Award Amount: $99,950.00
Abstract:
This SBIR Phase-1 research project will develop a high-pressure gas-powered aerosol generation system based on dispersing fine particulates from a prepackaged reservoir. Potential improvement in operational stealth capability would be derived from two advantages over the current smoke screen… More

Flexible Transfer of Regolith in Micro-Gravity and Vacuum

Award Year / Program / Phase: 2012 / SBIR / Phase I
Agency: NASA
Principal Investigator: Otis Walton, Principal Investigator
Award Amount: $124,870.00
Abstract:
A novel, robust method of collection and transfer of NEO/Phobos material under micro-gravity conditions under vacuum/space environment with minimal loss of volatiles will be developed and its feasibility demonstrated. The same designs can also be utilized in lunar or Martian applications with only… More