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Metal Digital Direct Manufacturing (MDDM) for Close-Out of Combustion Chambers and Nozzle Fabrications

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC19C0068
Agency Tracking Number: 150059
Amount: $754,784.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: T12
Solicitation Number: STTR_19_P2S
Timeline
Solicitation Year: 2019
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-09-30
Award End Date (Contract End Date): 2021-09-29
Small Business Information
664 Northwest Enterprise Drive, Suite 118, Port Saint Lucie, FL, 34986-1565
DUNS: 114133213
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Bryant Walker
 (772) 341-2700
 bryant@keystonehq.com
Business Contact
 Morris Hicks
Phone: (228) 813-6325
Email: Morris.hicks@nasa.gov
Research Institution
 The University of Alabama in Huntsville
 301 Sparkman Drive, VBRH E26
Huntsville, AL, 35899-0000
 Federally funded R&D center (FFRDC)
Abstract
This NASA sponsored STTR project will investigate methods for close-out of large, liquid rocket engine, nickel or stainless steel nozzle, coolant channels utilizing robotic laser and pulsed-arc additive manufacturing (AM)methods. Structural jacket to coolant channel land area interface strength will be quantified and metallurgical characterization completed.Process optimizations will be conducted to select best deposition parameters and starting feed stock for the AM processes based on article pressure drop and pressure testing. Sub-scale and intermediate size nozzles will be fabricated using the hybrid Metal Digital Direct Manufacturing (MDDM) processes and delivered to the NASA-MSFC for hot fire testing. Value stream analysis and process cost modeling methods will be used to estimate nozzle should costs and to identify relative economic risk of each nozzle AM operation.

* Information listed above is at the time of submission. *

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