A Rain Erosion Resistant Coating for High Speed Flight

LIKE many other people, Hawker Siddeley Dynamics have also been interested in resin‐systems which have, or claim to have, a higher heat resistance, and tests on these as they became available were part of our normal evaluation programme at Whitley. It was during one of these programmes, when physical and mechanical properties of filled resins were being evaluated that the question of their suitability as protective coatings against rain was raised. The subject was a challenging one, and we decided to take it up.