Materials and Processes for New Propulsion Systems with Reduced Environmental Impact

Why hasn’t the challenges slide about ceramic engines been updated since 2015?

# Advanced CMCs, Additive Manufacturing, and Joining/Integration Technologies
# Advanced CMCs, Additive Manufacturing, and Joining-Integration Technologies
Date: 2019
Authors [[Joseph Grady]][[Michael Halbig]]
NASA 2700degree F CMC combination of 
1. Creep-resiistant Sylramic-iBN fiber
2. Advanced 3D fiber architecture
3. Hybrid CVI-PIP SiC matrix
TRL 5
Advantage of 2700degree C - higher operating temperatures. Higher operating temperatures 
Flipside is that a constraint on engines is their operating temperature which is limited <because their parts will melt?>
Challenges page not updated since [[~~A Fully Non-Metallic Gas Turbine Engine Enabled by Additive Manufacturing (Presentation)]]?? < Question
Laminated Object Manufacturing for Silicon Carbide Based Composites - laser cutter based materials?
Additive Manufacturing of Ceramics uUsing Binder  Jettiing
Direct Writing Technologies for Sensors/Embedded Systems
- Writing circuits on a surface, can write a string gauge
Integration of Metals to Ceramics and Composites Using Metallic Interlayers
Affordable, Robust Ceramic Joining Technology (ARCJoinT)
From 1999
What things is it usefull for
Where does it fail
Flexible Gaskets for Hypersonic Applications 
- why do you want these?
Ultra High Temperature Ceramics 
[[Evaluation of ultra-high temperature ceramics for aeropropulsion use]]
So why don’t we have ceramic airplane engines?
Related To: [[Generative Materials are a possible cross disciplinary place]]?
References [[~~A Fully Non-Metallic Gas Turbine Engine Enabled by Additive Manufacturing (Presentation)]]
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20190025714.pdf

                        

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# Why hasn’t the challenges slide about ceramic engines been updated since 2015?
# Why hasn’t the challenges slide about ceramic engines been updated since 2015
Between
[[A Fully Nonmetallic Gas Turbine Engine Enabled by Additive Manufacturing  (Paper)]] 
and
[[Advanced CMCs, Additive Manufacturing, and Joining/Integration Technologies]]?
           


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