NTRS - NASA Technical Reports Server

Back to Results
Internally Cooled Monolithic Silicon Nitride Aerospace ComponentsA set of rapid prototyping (RP) processes have been combined with gelcasting to make ceramic aerospace components that contain internal cooling geometry. A mold and core combination is made using a MM6Pro (Sanders Prototyping, Inc.) and SLA-250/40 (3Dsystems, Inc.). The MM6Pro produces cores from ProtoBuild (trademarked) wax that are dissolved in room temperature ethanol following gelcasting. The SLA-250/40 yields epoxy/acrylate reusable molds. Parts produced by this method include two types of specimens containing a high density of thin long cooling channels, thin-walled cylinders and plates, as well as a model hollow airfoil shape that can be used for burner rig evaluation of coatings. Both uncoated and mullite-coated hollow airfoils has been tested in a Mach 0.3 burner rig with cooling air demonstrating internal cooling and confirming the effectiveness of mullite coatings.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Best, Jonathan E.
(Case Western Reserve Univ. Cleveland, OH United States)
Cawley, James D.
(Case Western Reserve Univ. Cleveland, OH United States)
Bhatt, Ramakrishna T.
(Army Research Lab. United States)
Fox, Dennis S.
(NASA Glenn Research Center Cleveland, OH United States)
Lang, Jerry
Date Acquired
September 7, 2013
Publication Date
January 1, 2000
Subject Category
Aircraft Design, Testing And Performance
Meeting Information
Meeting: Ceramic Materials and Components for Engineers 7th International Symposium
Location: Goslar
Country: Germany
Start Date: June 19, 2000
End Date: June 21, 2000
Funding Number(s)
PROJECT: RTOP 523-31-13
Distribution Limits
Work of the US Gov. Public Use Permitted.
No Preview Available