- abradable tip
- The tip of some axial-flow compressor blades made in such a way that it will wear away when it contacts a compressor casing. Some fan and compressor blade tips are sealed with silicone rubber that contains a 20% filling made of fine glass beads to overcome this problem.
Aviation dictionary. 2014.
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Abradable coating — An abradable coating is a coating made of an abradable material – meaning if it rubs against a more abrasive material in motion, the former will be worn whereas the latter will face no wear.Abradable coatings are used in aircraft jet engines in… … Wikipedia