| 摘要 |
The invention concerns a pressure frame designed in particular for an aircraft and consisting of a cover made of a composite material reinforced with glass fibres, preferably in one single piece, and reinforcement devices connected to the cover or produced integral therewith. The invention aims at providing a pressure frame as light and as inexpensive as possible while observing the load specifications in particular for heavy aircraft, and whic h is characterised by the reduction of risks of the cover being lifted towards th e aircraft flight compartment. The invention is characterised in that the cove r (4) has a substantially uniform thickness and at least one reinforcement device of the cover (4) is set in the centre and on the concave side of the cover. Said cover (4) reinforcement device located in the central zone is advantageously formed by a reinforcing structure (7) oriented towards the cover (4) curve, for example a tapered structure, bowl-shaped or parabolic. A cavity is arranged between the cover (4) and the reinforcing structure (7).
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