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申请号:201911346504.8 公开号:CN110887737A 主分类号:G01N3/08
摘要:【中文】本发明公开了一种复合材料加筋壁板压损强度试验确定方法,包括步骤1:根据给定的复材加筋板,设计两组压损试验件;步骤2:对两组压损试验件进行压损试验,记录两组中每个压损试验件的破坏载荷Fkij,计算每个压损试验件的压损强度;步骤3:绘制压损强度随试验件长细比变化的曲线;步骤4:建立两条直线方程,分别计算直线方程与平面直角坐标系纵轴的交点;步骤5:计算复合材料加筋壁板压损强度σk,解决了目前工程领域主要通过具有相同加筋板剖面的短柱进行压损试验得到压损强度,存在的试验结果差异性较大、严重影响了后续加筋板轴压承载能力的计算结果,给飞机结构设计带来了不安全的隐患或者过多的重量代价的问题。 【EN】The invention discloses a method for determining a pressure loss strength test of a composite material reinforced wall plate, which comprises the following steps of 1: designing two groups of pressure loss test pieces according to a given composite material stiffened plate; step 2: carrying out pressure loss test on the two groups of pressure loss test pieces, and recording the damage load F of each pressure loss test piece in the two groupskijCalculating the pressure loss strength of each pressure loss test piece; and step 3: drawing a curve of the pressure loss strength along with the slenderness ratio of the test piece; and 4, step 4: establishing two linear equations, and respectively calculating the intersection points of the linear equations and the longitudinal axis of the plane rectangular coordinate system; and 5: calculating the pressure loss strength sigma of the composite material reinforced wall platekThe method solves the problems that the pressure loss strength is obtained mainly by carrying out a pressure loss test on short columns with the same stiffened plate section in the current engineering field, the difference of the test results is large, the calculation result of the axial pressure bearing capacity of the subsequent stiffened plate is seriously influenced, and unsafe hidden dangers or excessive weight cost are brought to the structural design of the airplane.
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申请号:201911346691.X 公开号:CN110886653A 主分类号:F02C7/04
摘要:【中文】本发明公开了一种喷气式发动机冲击波防护系统,包括机体,机体上开设有进气道,还包括高压气出气管、高压稳压腔、高压气进气管、激波管孔板、激波管阀门,机体内部设置有高压气出气管,高压气出气管出口与进气道前段管道连通,高压气出气管与设置在其后部的高压稳压腔连通,高压稳压腔与高压气进气管连通,激波管孔板后端与所述的高压气出气管出口下端铰接,激波管阀门后端与高压气出气管中段上壁面铰接,激波管孔板上设置有若干通气孔,本发明利用储存在高压稳定室中的高压气在进气道前段管道内形成向前运动的锤激波,在进气道进口前与外来的冲击波迎面碰撞,避免/消弱冲击波对进气道结构、发动机冲击。 【EN】The invention discloses a shock wave protection system of a jet engine, which comprises a machine body, wherein the machine body is provided with an air inlet channel, and further comprises a high-pressure air outlet pipe, a high-pressure stabilizing cavity, a high-pressure air inlet pipe, a shock tube pore plate and a shock tube valve, the machine body is internally provided with the high-pressure air outlet pipe, the outlet of the high-pressure air outlet pipe is communicated with a front section pipeline of the air inlet channel, the high-pressure air outlet pipe is communicated with the high-pressure stabilizing cavity arranged at the rear part of the high-pressure air outlet pipe, the high-pressure stabilizing cavity is communicated with the high-pressure air inlet pipe, the rear end of the shock tube pore plate is hinged with the lower end of the outlet of the high-pressure air outlet pipe, the rear end of the shock tube valve is hinged with the upper wall surface of the middle section of the high-pressure, the impact of the shock wave on the air inlet structure and the engine is avoided/weakened.
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申请号:201911356641.X 公开号:CN110887633A 主分类号:G01M9/00
摘要:【中文】本发明实施例公开了一种弹性阵风响应风洞试验装置,包括:机翼、转接件、机翼连接件和试验支持件,试验支持件包括导轨、分别设置于导轨两端的支撑底座,嵌套在导轨上的滑动组件;机翼包括对称设置的左部机翼和右部机翼,转接件包括左部机翼转接件和右部机翼转接件,左部机翼通过左部机翼转接件设置于机翼连接件的一侧,右部机翼通过右部机翼转接件设置于机翼连接件的另一侧,机翼连接件和转接件套接在滑动组件的外部,通过滑动组件在导轨轴向上的滑动带动机翼运动。本发明实施例解决了现有刚性模型形式的阵风响应模型,无法对阵风响应试验中的弹性情况进行模拟,以及模型支持方式单一,不能满足多种边界条件下的阵风响应试验的问题。 【EN】The embodiment of the invention discloses an elastic gust response wind tunnel test device, which comprises: the test support piece comprises a guide rail, support bases respectively arranged at two ends of the guide rail and a sliding assembly nested on the guide rail; the wing includes left part wing and the right part wing that the symmetry set up, and the adaptor includes left part wing adaptor and right part wing adaptor, and left part wing sets up in one side of wing connecting piece through left part wing adaptor, and right part wing sets up in the opposite side of wing connecting piece through right part wing adaptor, and wing connecting piece and adaptor cup joint in the outside of slip subassembly, drive the wing motion through the slip subassembly in the guide rail axial. The embodiment of the invention solves the problems that the existing gust response model in a rigid model form cannot simulate the elastic condition in the gust response test, and the gust response test under various boundary conditions cannot be satisfied due to single model support mode.
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申请号:201911346679.9 公开号:CN110927346A 主分类号:G01N33/00
摘要:【中文】本发明涉及测试与计量技术领域,尤其设计一种能够对气体浓度测试系统进行计量的校准方法及装置。该方法包括:获取气体浓度测试系统校准装置采集到的温度、压力和流量;当温度、压力和流量都满足测试的各自预设范围时,记录相应时刻气体浓度测试系统采集到的气体浓度;对记录的所有气体浓度和各自标准气体浓度进行拟合,得到浓度曲线。 【EN】The invention relates to the technical field of testing and metering, in particular to a calibration method and a calibration device capable of metering a gas concentration testing system. The method comprises the following steps: acquiring the temperature, pressure and flow collected by a gas concentration test system calibration device; when the temperature, the pressure and the flow all meet the respective preset ranges of the test, recording the gas concentration acquired by the gas concentration test system at the corresponding moment; and fitting all the recorded gas concentrations and respective standard gas concentrations to obtain a concentration curve.
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申请号:201911356281.3 公开号:CN110926930A 主分类号:G01N3/02
摘要:【中文】本发明实施例公开了一种飞机双头螺柱结构的扭拉关系测量装置和测量方法,包括:双头螺柱连接结构和扭拉关系测测量模块;双头螺柱连接结构中,加载端螺母固定在双头螺柱一端,固定端螺母固定在双头螺柱另一端,两个衬套分别嵌套在双头螺柱两端;扭拉关系测测量模块中,转轴的一端与电机固定连接,另一端与螺母套筒固定连接,螺母套筒的端口卡合在双头螺柱连接结构的加载端螺母上,输入扭矩传感器设置在转轴上,双头螺柱穿过组合止动夹头和承力挡板,固定端螺母通过组合止动夹头固定,承力挡板和组合止动夹头分别与扭矩与拉力传感器连接。本发明实施例解决了双头螺柱结构的扭拉关系测量问题,可以有效地测量双头螺柱结构的扭拉关系。 【EN】The embodiment of the invention discloses a torsion-tension relation measuring device and a torsion-tension relation measuring method for an aircraft stud structure, which comprise the following steps: the double-end stud connecting structure and the torsion-tension relation measuring module; in the stud connecting structure, a loading end nut is fixed at one end of a stud, a fixed end nut is fixed at the other end of the stud, and two bushings are respectively nested at two ends of the stud; in the torsional-tensile relation measurement module, one end of a rotating shaft is fixedly connected with a motor, the other end of the rotating shaft is fixedly connected with a nut sleeve, a port of the nut sleeve is clamped on a loading end nut of a stud connecting structure, an input torque sensor is arranged on the rotating shaft, a stud penetrates through a combined locking chuck and a force-bearing baffle plate, the fixed end nut is fixed through the combined locking chuck, and the force-bearing baffle plate and the combined locking chuck are respectively connected with a torque and tension sensor. The embodiment of the invention solves the problem of measuring the torsion-pull relationship of the stud structure, and can effectively measure the torsion-pull relationship of the stud structure.
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申请号:201911356461.1 公开号:CN110926873A 主分类号:G01N1/10
摘要:【中文】本申请提供一种异型腔室取样结构,所述异型腔室取样结构包括取样探头组1、支撑杆腔组2、法兰盘3,所述取样探头组1包括取样腔管4和多耳环腔室组5,所述支撑杆腔组2包括中空支撑杆9、采样信号稳平衡环腔室10和双梯型环腔室11,其中:所述取样管腔4为中空钢管,所述取样管腔4的一端用于取样,所述取样管腔4的另一端与所述多耳环腔室组5连接;所述多耳环腔室组5包括至少两个相互贯通的环腔室6,在与取样管腔4相通的环腔室6上设置有取样孔7,在与环腔室6相通的支撑杆腔组2上设置有采样孔8;中空支撑杆9上设置有至少两个采样信号稳平衡环腔室10,中空支撑杆9的底端设置有双梯型环腔室11,法兰盘3为盘饼型结构。 【EN】The application provides a heterotypic cavity sample structure, heterotypic cavity sample structure includes sampling probe group 1, bracing piece chamber group 2, ring flange 3, sampling probe group 1 includes sampling chamber pipe 4 and many earrings chamber group 5, bracing piece chamber group 2 includes cavity bracing piece 9, the steady balance ring chamber 10 of sampling signal and two terraced type ring chambers 11, wherein: the sampling tube cavity 4 is a hollow steel tube, one end of the sampling tube cavity 4 is used for sampling, and the other end of the sampling tube cavity 4 is connected with the multi-earring chamber group 5; the multi-earring chamber group 5 comprises at least two mutually communicated ring chambers 6, a sampling hole 7 is arranged on the ring chamber 6 communicated with the sampling chamber 4, and a sampling hole 8 is arranged on the support rod chamber group 2 communicated with the ring chamber 6; at least two sampling signal stable balance ring cavities 10 are arranged on the hollow support rod 9, a double-ladder-shaped ring cavity 11 is arranged at the bottom end of the hollow support rod 9, and the flange plate 3 is of a disc cake type structure.
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申请号:201911358636.2 公开号:CN110926994A 主分类号:G01N3/56
摘要:【中文】本申请提供一种轴套涂层摩擦磨损试验方法,所述方法应用于桁架式襟翼摇臂结构,所述桁架式襟翼摇臂结构包括双耳片组件和襟翼操纵接头,双耳片组件包括衬套,襟翼操纵接头内设置有台阶轴,台阶轴用于和衬套配合使用,所述方法包括:对台阶轴和衬套进行无损检测,并记录台阶轴直径和初始衬套直径;对衬套进行安装,测量衬套安装后的装配衬套直径;将润滑脂涂到衬套的润滑槽内;对台阶轴的两端施加恒定载荷,测量台阶轴与衬套在加载方向的间隙;使台阶轴和衬套相对转动,根据台阶轴直径、初始衬套直径、衬套直径和台阶轴与衬套在加载方向的间隙,连续测量在转动过程中台阶轴与衬套之间的摩擦系数以及摩擦面温度。 【EN】The application provides a shaft sleeve coating friction wear test method, the method is applied to truss-like flap rocker arm structure, truss-like flap rocker arm structure includes two lug piece subassemblies and flap control joint, and two lug piece subassemblies include the bush, are provided with the step axle in the flap control joint, and the step axle is used for using with the bush cooperation, the method includes: carrying out nondestructive testing on the step shaft and the bush, and recording the diameter of the step shaft and the diameter of the initial bush; installing a bushing, and measuring the diameter of an assembly bushing after the bushing is installed; applying grease to the lubrication grooves of the bushing; applying constant load to two ends of the step shaft, and measuring the gap between the step shaft and the bushing in the loading direction; and continuously measuring the friction coefficient and the friction surface temperature between the step shaft and the bush in the rotating process according to the diameter of the step shaft, the diameter of the initial bush, the diameter of the bush and the gap between the step shaft and the bush in the loading direction.
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申请号:201911361013.0 公开号:CN110927055A 主分类号:G01N19/02
摘要:【中文】本发明实施例公开了一种轴承内外圈之间的摩擦系数测量装置和测量方法,待测轴承组件包括两个陪试轴承,陪试衬套和转动加载衬套,转动销轴,以及被测轴承内圈和轴承外圈;力加载模块用于通过轴承外圈固定件向轴承外圈和内圈加载径向载荷,使得轴承内、外圈接触,并记录加载的径向载荷值;扭矩测量模块用于测量待测轴承组件进行转动时受到的负载扭矩值;负载扭矩值与两个陪试轴承的附加扭矩值之差为轴承内外圈之间的修正扭矩值;轴承内外圈之间的摩擦系数为修正扭矩值随径向载荷值变化的关系曲线的斜率。本发明实施例可以有效排除受力不均匀、以及其他组件滑动摩擦干扰等情况,从而有效地测量轴承内外圈之间的静摩擦系数和动摩擦系数。 【EN】The embodiment of the invention discloses a device and a method for measuring a friction coefficient between an inner ring and an outer ring of a bearing, wherein a bearing assembly to be measured comprises two bearings to be tested, a bushing to be tested, a rotating loading bushing, a rotating pin shaft, an inner ring of the bearing to be measured and an outer ring of the bearing to be measured; the force loading module is used for loading radial loads to the bearing outer ring and the bearing inner ring through the bearing outer ring fixing piece, so that the bearing inner ring and the bearing outer ring are contacted, and the loaded radial load value is recorded; the torque measuring module is used for measuring a load torque value borne by the bearing assembly to be measured when the bearing assembly to be measured rotates; the difference between the load torque value and the additional torque values of the two test-accompanying bearings is a corrected torque value between the inner ring and the outer ring of the bearing; the friction coefficient between the inner and outer rings of the bearing is the slope of the curve of the corrected torque value as a function of the radial load value. The embodiment of the invention can effectively eliminate the conditions of uneven stress, sliding friction interference of other components and the like, thereby effectively measuring the static friction coefficient and the dynamic friction coefficient between the inner ring and the outer ring of the bearing.
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申请号:201911362776.7 公开号:CN110926931A 主分类号:G01N3/02
摘要:【中文】本发明实施例公开了一种飞机铰链结构的扭拉关系测量装置和测量方法,包括:铰链结构和扭拉关系测测量模块;铰链结构中,螺栓穿过双耳结构和轴承,螺栓的螺纹端通过螺母旋入固定;扭拉关系测测量模块中,止动夹头和承力挡板设置有用于螺栓穿过的通孔,转轴的一端与电机固定连接,另一端与螺母套筒固定连接,螺母套筒的端口卡合在铰链结构的螺母上,输入扭矩传感器设置在转轴上;螺栓还穿过止动夹头和承力挡板,螺栓头通过止动夹头固定,承力挡板与双耳结构接近螺栓头的一侧相接触,且承力挡板和止动夹头分别与扭矩与拉力传感器连接。本发明实施例解决了典型铰链结构的扭拉关系测量问题,可以有效地测量典型铰链结构扭拉关系。 【EN】The embodiment of the invention discloses a torsion-tension relation measuring device and a torsion-tension relation measuring method of an airplane hinge structure, which comprise the following steps: the hinge structure and the torsion-tension relation measuring module; in the hinge structure, a bolt penetrates through the double-lug structure and the bearing, and a threaded end of the bolt is screwed in and fixed through a nut; in the torsional-tensile relation measuring module, a through hole for a bolt to pass through is formed in the locking chuck and the force bearing baffle plate, one end of the rotating shaft is fixedly connected with the motor, the other end of the rotating shaft is fixedly connected with the nut sleeve, a port of the nut sleeve is clamped on a nut of the hinge structure, and the input torque sensor is arranged on the rotating shaft; the bolt also passes through the stop chuck and the bearing baffle, the bolt head is fixed through the stop chuck, the bearing baffle is contacted with one side of the double-lug structure close to the bolt head, and the bearing baffle and the stop chuck are respectively connected with the torque and tension sensor. The embodiment of the invention solves the problem of measuring the torsion-tension relationship of the typical hinge structure, and can effectively measure the torsion-tension relationship of the typical hinge structure.
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申请号:201911363534.X 公开号:CN110927056A 主分类号:G01N19/02
摘要:【中文】本发明实施例公开了一种轴承内圈与螺栓表面的摩擦系数测量装置和测量方法,待测轴承组件包括两个陪试轴承,陪试衬套和转动加载衬套,螺栓和轴承内圈;力加载模块用于通过轴承内圈夹紧件向轴承内圈加载径向载荷,并记录加载的径向载荷值;扭矩测量模块用于测量待测轴承组件进行转动时受到的负载扭矩值;负载扭矩值与两个陪试轴承的附加扭矩值之差为轴承内圈与螺栓表面的修正扭矩值;轴承内圈与螺栓表面的摩擦系数为修正扭矩值随径向载荷值变化的关系曲线的斜率。本发明实施例可以有效排除受力不均匀、以及其他组件滑动摩擦干扰等情况,从而有效地测量轴承内圈与螺栓表面的静摩擦系数和动摩擦系数。 【EN】The embodiment of the invention discloses a device and a method for measuring the friction coefficient between a bearing inner ring and the surface of a bolt, wherein a bearing assembly to be measured comprises two test-accompanying bearings, a test-accompanying bush, a rotating loading bush, a bolt and a bearing inner ring; the force loading module is used for loading a radial load to the bearing inner ring through the bearing inner ring clamping piece and recording a loaded radial load value; the torque measuring module is used for measuring a load torque value borne by the bearing assembly to be measured when the bearing assembly to be measured rotates; the difference between the load torque value and the additional torque values of the two test-accompanying bearings is a corrected torque value of the inner ring of the bearing and the surface of the bolt; the friction coefficient between the bearing inner ring and the surface of the bolt is the slope of a relation curve of the correction torque value changing along with the radial load value. The embodiment of the invention can effectively eliminate the conditions of uneven stress, sliding friction interference of other components and the like, thereby effectively measuring the static friction coefficient and the dynamic friction coefficient of the bearing inner ring and the surface of the bolt.
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