METHOD OF BONDING TAIL COMPARTMENTS TO SPAR OF MAIN ROTOR BLADE Russian patent published in 1998 - IPC

FIELD: manufacture of helicopters; manufacture of blades of helicopter main rotors. SUBSTANCE: tail compartment are bonded to rear wall of spar subjected to tensile prestress due to bending the spar in plane of chords in the fixture, for example whose base is curvilinear in direction ensuring tension in rear wall of spar; curvature radius is found from the following formula: R = Eh/σ_bend, where E is mounted of elasticity of spar material; h is distance from trailing edge of spar to its neutral axis in bending in plane of maximum rigidity; σ_bend is wanted magnitude of additional compressive stresses in frontal section of skin of tail compartments. EFFECT: enhanced reliability. 3 dwg