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    • 51. 发明公开
    • Method for evaluating the structural compatibility of an aircraft for use on rough runways
    • 用于评估使用不均匀的跑道的飞机的结构相容性方法
    • EP2645055A1
    • 2013-10-02
    • EP13161497.6
    • 2013-03-27
    • Alenia Aermacchi S.p.A.
    • Piccolo, AntonioMastroianni, GaetanaMigliore, Sandro
    • G01B21/30G08G5/00
    • E01C9/00G01B21/30G08G5/00
    • A method for evaluating the structural compatibility of an aircraft (2) for use on a runway (5) having a profile with one or more roughnesses (7, 8) in the form of bumps and/or dips, comprising the steps of: generating (102) a first equivalent bump height curve (25) indicative of the elevation and/or depression of the one of more roughnesses of the runway with respect to a reference value; comparing (106) the first equivalent bump height curve with a second equivalent bump height curve indicative of elevation and/or depression limit values of reference roughnesses such that, when the aircraft encounters said reference roughnesses, it remains within the envelope of admissible loads; generating (103) a first power spectral density curve by means of spectral analysis of the profile of the runway; comparing (107) the first power spectral density curve with a second power spectral density curve (60) relating to a profile of a reference runway such that, when the aircraft runs along this reference runway, it remains within the envelope of admissible loads; verifying (108) if the first equivalent bump height curve (25) develops entirely within the first acceptability region and if the first power spectral density curve develops entirely within the second acceptability region; and authorizing or denying (112, 114, 116) the aircraft the use of the runway, on the basis of the result of said step of verifying (108).
    • 性评价(5)上具有一个或多个粗糙度的轮廓的跑道中使用的飞行器(2)的结构的相容性的方法(7,8)中凸块和/或凹陷,其包括以下步骤的形式:生成 (102)的第一等效凸块高度的曲线(25)表示仰角和/或跑道的相对于参考值的粗糙度中的一个的凹陷; 比较(106)与指示仰角和/或寻求其的参考粗糙度抑郁极限值,当飞机遇到所述参考粗糙度的第二等效凸块高度曲线的第一等效凸块高度的曲线,但它仍然可容许的负载的包络线之内; 生成(103)由所述跑道的轮廓的频谱分析的装置的第一功率谱密度曲线; 比较(107)与第二功率谱密度曲线(60)的第一功率谱密度曲线与一个参考跑道检查的是,当飞机沿着该参考跑道运行时,它仍然是可容许的负载的包络内的一个简档; 验证(108),如果第一等效凸块高度的曲线(25)完全开发出的第一区域和可接受范围内,如果第一功率谱密度曲线的第二区域内的可接受完全开发出; 和授权或拒绝(112,114,116)的飞机上使用跑道的,验证(108)的所述步骤的结果的基础上。
    • 55. 发明公开
    • Method for manufacturing products made of composite material with a closed-section sandwich structure
    • 一种用于制备的产品具有的夹层结构具有封闭部分由复合材料制成的过程
    • EP2511082A2
    • 2012-10-17
    • EP12163763.1
    • 2012-04-11
    • Alenia Aermacchi S.p.A.
    • Pitzolu, Ruggero
    • B29C70/46B29C70/86
    • B29C70/865B29C70/46
    • A matched mould curing apparatus (10) defining a moulding cavity is provided; two sets of layers (16, 26) of curable, fibre-reinforced, thermosetting composite material are laminated on the lower forming tool (11) and upper forming tool (12). Closed-cell foam core segments (15a-15d) are provided and placed adjacent to each other on the layers (16). The core segments are oversized with respect to the nominal size determined by the moulding cavity in the closed condition, minus the thickness of the layers (16, 26) of composite material. A controlled temperature is applied firstly so as to allow plastic deformation of the core segments (15a-15d), but without closing completely the matched mould. The temperature and pressure are then applied so as to cause complete closure of the matched mould (10, 11, 12) and curing of the laminated layers (16, 26).
    • 定义模腔的匹配模具固化装置(10)设置; 固化的,纤维增强的,热固性复合材料的两组层(16,26)被层叠在下部成形工具(11)和上部成形工具(12)。 闭孔泡沫芯段(15A-15D)被提供,并放置在相邻的海誓山盟上的各层(16)。 芯段是过大的相对于标称尺寸确定性由模腔在关闭状态开采,减去复合材料的层(16,26)的厚度。 受控的温度被首先施加,从而允许芯段(15A-15D)的塑性变形,但没有完全关闭调用匹配模具。 然后,将温度和压力被施加,以使匹配的模具(10,11,12)和固化叠层(16,26)的完全闭合。