CN109606708B - 一种小尺寸进气道结构制备方法 - Google Patents
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Abstract
一种小尺寸进气道结构制备方法,首先采用低压接触成型工艺将加有固化剂的树脂混合液涂覆至纤维增强材料上,而后将纤维增强材料置入用于制备进气道复合材料零件的模具中,通过固化成型、脱模得到进气道主体、上蒙皮、中蒙皮及下蒙皮的复合材料制件;而后机加成型制备进气道唇口,再将上蒙皮与中蒙皮***进气道唇口并通过抽芯铆钉连接,将中蒙皮与下蒙皮搭接对齐后通过抽芯铆钉连接;最后将进气道主体套进进气道唇口后由托板螺母、唇口预制螺钉孔固定,即得到小尺寸进气道结构,整体化较高,蒙皮刚度强,能控制结构变形;同时有效减少结构零件数目及铆接数量,采用复合材料能满足复杂曲面外形设计要求,适用于外形复杂、操作空间不足的进气道结构。
Description
技术领域
本发明涉及飞机结构设计技术领域,尤其涉及一种小尺寸进气道结构制备方法。
背景技术
飞机发动机进气道主要有以下两大功能:一是保证发动机在各种工作状态下都能稳定地工作;二是对进入进气道的空气进行压缩,促使气流的动能变成压力势能。对于亚音速飞机来说,进气道的主要作用是保证进入发动机的气流稳定。由于小型飞机(基础教练机、无人机),飞机的体积相对较小,因此进气道的外形尺寸也较小,现有的进气道结构一般采用铝合金薄壁铆接结构,为满足进气道气流要求需布置内蒙皮,而外蒙皮则需要满足飞机气动外形要求,然而蒙皮刚度较弱,为了满足进气道结构的强度、刚度要求,内、外蒙皮间需采用筋条支撑,装配连接较多,需要较大的操作空间,此种进气道具有零件数量较多、结构重量较大、装配复杂、不适用于复杂曲面外形、要求铆接操作空间较大等不足。
发明内容
本发明所解决的技术问题在于提供一种小尺寸进气道结构制备方法,以解决上述背景技术中的缺点。
本发明所解决的技术问题采用以下技术方案来实现:
一种小尺寸进气道结构制备方法,具体步骤如下:
1)首先采用低压接触成型工艺将加有固化剂的树脂混合液涂覆至纤维增强材料上,而后将纤维增强材料置入用于制备进气道复合材料零件的模具中,通过固化成型、脱模得到进气道主体、上蒙皮、中蒙皮及下蒙皮的复合材料制件;
2)机加成型制备进气道唇口;
3)在步骤1)中制备的进气道主体上安装托板螺母、唇口预制螺钉孔;
4)将步骤1)中制备的上蒙皮与中蒙皮***进气道唇口,同时在上蒙皮、中蒙皮与进气道唇口的连接处凹陷区填充纤维丝;
5)将步骤1)中制备的中蒙皮与下蒙皮搭接对齐;
6)将进气道主体套进进气道唇口由托板螺母、唇口预制螺钉孔固定,即得到小尺寸进气道结构。
在本发明中,小尺寸进气道结构通过铆钉或快卸锁与周围结构连接。
在本发明中,制备上蒙皮、中蒙皮、下蒙皮及进气道主体的材料为复合材料NY9200GA/EW210预浸料。
在本发明中,进气道唇口采用7050铝合金制成,加工步骤为:将7050铝合金机加成形后经阳极化处理,再涂H06-3锌黄底漆。
在本发明中,小尺寸进气道结构包括进气道主体、上蒙皮、中蒙皮、下蒙皮及进气道唇口,其中,上蒙皮与中蒙皮***进气道唇口,中蒙皮与下蒙皮搭接对齐,进气道主体套在进气道唇口上。
在本发明中,中蒙皮与下蒙皮搭接对齐后通过抽芯铆钉连接。
在本发明中,上蒙皮、中蒙皮与进气道唇口通过抽芯铆钉连接。
在本发明中,进气道主体与进气道唇口通过托板螺母、唇口预制螺钉孔固定。
有益效果:本发明制备的小尺寸进气道结构整体化较高,蒙皮刚度强,能控制结构变形;同时有效减少结构零件数目及铆接数量,装配简单,从而降低装配成本,采用复合材料能满足复杂曲面外形的设计要求,适用于外形复杂、操作空间不足的进气道结构(包括机背式、两侧式、机腹式等进气道构型)设计及制造。
附图说明
图1为本发明的较佳实施例的结构示意图。
图2为图1中A-A处剖视图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体图示,进一步阐述本发明。
一种小尺寸进气道结构制备方法,具体步骤如下:
1)首先采用低压接触成型工艺将加有固化剂的树脂混合液涂覆至纤维增强材料上,而后将纤维增强材料置入用于制备进气道复合材料零件的模具中,通过固化成型、脱模得到进气道主体1、上蒙皮3、中蒙皮4及下蒙皮5的复合材料制件;
2)机加成型制备进气道唇口2;
3)在步骤1)中制备的进气道主体1上安装托板螺母、唇口预制螺钉孔;
4)将步骤1)中制备的上蒙皮3与中蒙皮4***进气道唇口2并通过抽芯铆钉连接,同时在上蒙皮3、中蒙皮4与进气道唇口2的连接处凹陷区填充纤维丝;
5)将步骤1)中制备的中蒙皮4与下蒙皮5搭接对齐后,通过抽芯铆钉连接;
6)将进气道主体1套进进气道唇口2后由托板螺母、唇口预制螺钉孔固定,即得到小尺寸进气道结构。
在本实施例中,小尺寸进气道结构通过铆钉(或快卸锁)与周围结构连接。
在本实施例中,制备上蒙皮3、中蒙皮4、下蒙皮5及进气道主体1的材料为复合材料NY9200GA/EW210预浸料,进气道唇口2制备材料为7050铝合金,将7050铝合金机加成形后经阳极化处理,再涂H06-3锌黄底漆。
在本实施例中,如图1~图2所示的小尺寸进气道结构包括进气道主体1、上蒙皮3、中蒙皮4、下蒙皮5及进气道唇口2,其中,上蒙皮3与中蒙皮4***进气道唇口2,中蒙皮4与下蒙皮5搭接对齐,进气道主体1套在进气道唇口2上。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (7)
1.一种小尺寸进气道结构制备方法,其特征在于,具体步骤如下:
1)首先采用低压接触成型工艺将加有固化剂的树脂混合液涂覆至纤维增强材料上,而后将纤维增强材料置入用于制备进气道复合材料零件的模具中,通过固化成型、脱模得到进气道主体、上蒙皮、中蒙皮及下蒙皮的复合材料制件;
2)机加成型制备进气道唇口;
3)在步骤1)中制备的进气道主体上安装托板螺母、唇口预制螺钉孔;
4)将步骤1)中制备的上蒙皮与中蒙皮***进气道唇口,且上蒙皮、中蒙皮与进气道唇口通过抽芯铆钉连接,同时在上蒙皮、中蒙皮与进气道唇口的连接处凹陷区填充纤维丝;
5)将步骤1)中制备的中蒙皮与下蒙皮搭接对齐后通过抽芯铆钉连接;
6)将进气道主体套进进气道唇口由托板螺母、唇口预制螺钉孔固定,即得到小尺寸进气道结构。
2.根据权利要求1所述的一种小尺寸进气道结构制备方法,其特征在于,小尺寸进气道结构通过铆钉或快卸锁与周围结构连接。
3.根据权利要求1所述的一种小尺寸进气道结构制备方法,其特征在于,制备上蒙皮、中蒙皮、下蒙皮及进气道主体的材料为复合材料NY9200GA/EW210预浸料。
4.根据权利要求1所述的一种小尺寸进气道结构制备方法,其特征在于,进气道唇口采用7050铝合金制成。
5.根据权利要求4所述的一种小尺寸进气道结构制备方法,其特征在于,进气道唇口加工步骤为:将7050铝合金机加成形后经阳极化处理,再涂H06-3锌黄底漆。
6.根据权利要求1所述的一种小尺寸进气道结构制备方法,其特征在于,制备的小尺寸进气道结构包括进气道主体、上蒙皮、中蒙皮、下蒙皮及进气道唇口,其中,上蒙皮与中蒙皮***进气道唇口,中蒙皮与下蒙皮搭接对齐,进气道主体套在进气道唇口上。
7.根据权利要求6所述的一种小尺寸进气道结构制备方法,其特征在于,进气道主体与进气道唇口通过托板螺母、唇口预制螺钉孔固定。
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