Aircraft engine system and design method for fan section mechanical interface thereof

Abstract

The invention relates to an aircraft engine system and a design method for a fan section mechanical interface of the aircraft engine system, wherein the aircraft engine system comprises a vertical firewall, wherein a fan section of an engine and a hanger located in a non-fire area are separated by the vertical firewall; the vertical firewall is arranged on a bracket of the hanger; a distance from the vertical firewall to an external edge of the bracket of the hanger is less than 100mm; an outline of the vertical firewall is corresponding to the outline of the hanger; and interfaces of a hydraulic pipe, a fuel pipe and an extinguishing pipe of the aircraft engine system and through-wall sealing elements of a power supply cable and a signal cable are arranged on the vertical firewall. According to the invention, the vertical firewall is arranged at the front end of the hanger, so that the separation of the hanger from the fan section of the aircraft engine is directly realized, the firewall arrangement is greatly simplified and the weight is reduced.

Description

technical field [0001] The invention relates to an aircraft engine system, and more particularly, relates to a design method of an aircraft engine system and a mechanical interface of a fan area thereof. Background technique [0002] When the engine adopts the configuration that the accessory gearbox is installed in the fan area, the engine fan area becomes a fire area, and a firewall needs to be installed between the suspension of the non-fire area to isolate it to meet the relevant airworthiness requirements. At the same time, electronic equipment such as generators, hydraulic pumps, fuel pumps, starters, and engine controllers installed on the fan casing installed on the accessory gearbox need to pass through the firewall to connect with the aircraft. [0003] like figure 1 As shown, in the traditional suspension design, the engine 1 adopts the configuration that the accessory gearbox 2 is installed in the fan area, wherein the hinge beam 3 of the fan cover connection bo...

AI Technical Summary

Problems solved by technology

[0004] The above design results in a heavy weight of the firewall structure itself, and a large amount of fireproof materials need to be used on both sides and bottom of the course, thus greatly increasing the weight of the hanging

In addition, the layout of the system interface has high requirements for space, and more space needs to be reserved for the installation and arrangement of the system interface and the maintenance gap between the interfaces.

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