A containment fan casing
A fan casing and casing technology, which is applied in the direction of mechanical equipment, non-variable pumps, engine components, etc., can solve the problems of high manufacturing cost, heavy weight of hard-wall containing casing, and difficult process of soft-wall containing casing, etc. problem, to achieve the effect of promoting inclusiveness
Active Publication Date: 2022-04-19
AECC COMML AIRCRAFT ENGINE CO LTD
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Problems solved by technology
[0005] However, in the aforementioned design, the traditional hard-wall containment case is heavy, and the process of soft-wall containment case is difficult and the manufacturing cost is high.
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[0023] A variety of different implementations or examples for implementing the described subject technical solutions are disclosed below. In order to simplify the disclosure, the following describes the specific examples of each element and arrangement, and of course, these are only examples, and are not intended to limit the protection scope of the present application. For example, the description that the first feature described later in the description is formed on or above the second feature may include an embodiment in which the first and second features are formed through direct contact, and may also include an embodiment in which the first and second features are formed between the first and second features. Embodiments of additional features such that there may be no direct relationship between the first and second features. Additionally, reference numerals and / or letters may be repeated in different instances in these disclosures. This repetition is for brevity and c...
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An object of the present invention is to provide a containment fan case, which can contain broken or fallen fragments and prevent the fragments from penetrating the case when a blade falls off event occurs. The containment fan casing for achieving the aforementioned purpose includes an outer casing, an inner casing, and an interlayer part arranged between the outer casing and the inner casing. The interlayer part includes a plurality of outer armor parts arranged on the inner peripheral wall of the outer casing and a plurality of inner armor parts arranged on the outer peripheral wall of the inner casing. For any adjacent inner armor piece and outer armor piece, the outer armor piece has an outer adjacent edge, the inner armor piece has an inner adjacent edge, and a thin layer of inert explosive is sandwiched between the outer adjacent edge and the inner adjacent edge , in the cross-section of the casing, the outer adjacent edge, the inner adjacent edge and the thin layer of inert explosive extend between the outer layer casing and the inner layer casing, and have an inclination relative to the radial direction of the casing, the outer adjacent edge Located on the radially outer side of the thin layer of inert explosive, and the inner adjacent side is located radially inward of the thin layer of inert explosive.
Description
technical field [0001] The invention relates to a case containing a fan. Background technique [0002] During the high-speed operation of a turbofan engine, due to foreign object damage (such as bird strike) or high-low cycle fatigue, the fan blades will break and fall off. Damage to the aircraft cabin, fuel tank, hydraulic pipelines and electrical control lines, etc., leading to secondary damage such as loss of pressure in the cabin, fuel tank leakage, fire, and aircraft control failure, seriously endangering flight safety. Therefore, the casing must have sufficient strength, and at the highest operating speed, it can accommodate any broken or fallen blades, and the casing has no major fractures and serious distortions. The nature of the receiver to contain a broken or dislodged blade is also referred to as receiver containment. Statistics show that there were 315 aero-engine non-containment accidents between 1976 and 1983, and all major aviation countries attach great im...
Claims
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IPC IPC(8): F01D25/26F04D29/40
CPCF01D25/26F04D29/403
Inventor 刘鹏杨平陈美宁闫转运杨俊曾瑞慧徐浩亮
Owner AECC COMML AIRCRAFT ENGINE CO LTD