Fastener system for a jet engine mounting

Details Fastener system for a jet engine mounting Fastener system for a jet engine mounting

1989-08-28

1990-07-24

Barefoot, Galen

Aeronautics and astronautics

Aircraft power plants

Mounting

248554, 411339, B64D 2700

Patent

active

049430130

ABSTRACT:
The present invention provides a fastener system for attaching a jet engine to a mounting bar requiring access to only one side of the mounting flanges. The fastener remains in place should either the bolt or the hollow pin fracture during operation of the engine. The fastener system has jet engine casing flanges extending on either side of a mounting bar with aligned openings extending through these elements. Hollow sleeves extend through the openings in each of the engine casing flanges with the rear, or downstream sleeve extending through the downstream flange having an internally threaded portion. A hollow pin passes through the interiors of the sleeves and the aperture in the mounting bar and engages the downstream sleeve such that rotation between this sleeve and the hollow pin is prevented. A bolt, having a headed portion, is inserted through the hollow pin at, and is threadingly engaged with, the threaded portion of the rear or downstream sleeve. The headed portion of the bolt bears against a headed portion on the hollow pin to hold the fastener assembly together. An anti-rotation device is applied between the headed portion of the hollow pin and the jet engine casing to prevent inadvertent rotation.

REFERENCES:
patent: 3703741 (1972-11-01), Foster et al.
patent: 3831888 (1974-08-01), Baker et al.
patent: 4065077 (1977-12-01), Brooks
patent: 4079981 (1978-03-01), Mahler et al.
patent: 4603822 (1986-08-01), Chee

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