Verification of possibilities for strengthen gyroplane rotor blades base

Abstract

The paper presents the issue of strengthening the gyroplane rotor blade base by bonding the blade socket to it. Adhesive technology for aluminum alloy 6005 T6 has been developed. In order to develop optimal bonding parameters, a number of tests has been conducted, which resulted with selecting the best adhesive and the best method of surface preparation that provides the highest static strength. The test objects are, the gyro rotor blade and socket which is the link between the blade and the hub of gyroplane rotor, both elements were designed in Modern Autorotating Rotor Project. In order to develop a method of bonding a socket on the blade base the joint strength was tested for different way of socket installation. The first variant was pushing socket on the base of rotor blade, and another which uses the pocket cut along the leading edge. The second variant was created after initial tests that revealed defects in the socket docking on the rotor blade base, regardless of the direction of the docking. The results are compared with results of strength tests of the rotor blade base, where socket was only mount by screws. Summary of results verified the possibility to strengthen the rotor blade base by bonding socket and identified the optimal socket mounting solution on rotor blade base. Carried out the research process can be evidence strength test of gyroplane rotor blade base as well as basis for the implementation of bonding technology to use in the production of aluminum alloy rotor blades.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)