Improve Heat Resistance of Composite Engine Cowlings Using Ceramic Coating Materials, Experimental Design and Testing

2017-01-2130

09/19/2017

Features
Event
AeroTech Congress & Exhibition
Authors Abstract
Content
Oven and flame tests were designed and conducted to evaluate the heat resistance of a ceramic coating material, Cerakote C-7700Q, and evaluate its viability to replace the intumescent coating as one painting material for helicopter engine cowlings. The test results showed that the currently used painting scheme of the engine cowlings failed the 220°C oven test while after replacing the epoxy seal coat with the Cerakote, the new painting system passed the 220°C test in regards to painting bubbling. This study explained why serious appearance defects occurred in the inner skin of the engine cowling when the aircraft is hovering and suggested that one most time- and cost-effective solution is to repaint the current engine cowlings with a new three coating system of Cerakote, surface protection HS7072-622, and intumescent paint as a fireproof lacquer. The proposed study can be converted to a design project to senior mechanical engineering students to develop their design and teamwork skills and enhance their capacity for solving real-world engineering problems.
Meta TagsDetails
DOI
https://doi.org/10.4271/2017-01-2130
Pages
6
Citation
Liu, Y., Sippel, T., and He, G., "Improve Heat Resistance of Composite Engine Cowlings Using Ceramic Coating Materials, Experimental Design and Testing," SAE Technical Paper 2017-01-2130, 2017, https://doi.org/10.4271/2017-01-2130.
Additional Details
Publisher
Published
Sep 19, 2017
Product Code
2017-01-2130
Content Type
Technical Paper
Language
English